DOCSLIB.ORG

Review of Cornea & Contact Lenses

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Review of Cornea & Contact Lenses RCCL OCTOBER 2016 REVIEW OF CORNEA & CONTACT LENSES Lids & Lenses How eyelid disease can compromise contact lens wear, and what to do about it. Supplement to MMWR Alerts • Drug-Eluting Contact Lenses • Refractive Surgery Controversies • Branding 001_RCCL01016_Cover-R4.indd 1 9/29/16 6:28 PM The first contact lens specifically designed for your patients’ digital life and everyday living_ 9 out of 10 digital device users* agreed that Biofinity Energys™ contact lenses made their eyes feel good1. 8 out of 10 digital device users* agreed that Biofinity Energys™ contact lenses made their eyes feel less tired1. Your patients’ busy lives happen on-screen and off. Help them experience the contact lens designed for the way they live. Biofinity Energys™ contact lenses help with eye tiredness and dryness commonly associated with digital device use. Considering 90 percent of U.S. adults use digital devices more than two hours per day2, the opportunity to upgrade your patients is significant. Biofinity Energys™ contact lenses feature a revolutionary Digital Zone Optics™ lens design and Aquaform® Technology. Energize your practice —prescribe the patent-pending contact lens innovation made for today's digital lifestyle. Visit coopervision.com, or talk to your CooperVision® representative for details. Welcome to the new comfort zone_ * Among patients who use digital devices at least 4 hours per day at least 5 days per week and self-report symptoms of eye fatigue at least once per week. 1 After 1 week of wear; data on file. 2 The Vision Council. Eyes overexposed: the digital device dilemma: 2016 digital eye strain report. ©2016 CooperVision 9033O BC 7/16 RCCL0916_Coopervision Biofinity.indd 1 8/29/16 11:01 AM contents Review of Cornea & Contact Lenses | October 2016 departments features Beat the Blepharitis Blues News Review 4 To understand and treat this common lid US Refractive Surgeons Now Ready condition, make sure you’re clear on its to SMILE; Microbiota Protects many diff erent presentations. Against P. aeruginosa Infections By Abby Gillogly Harsch, OD, Nicole 12 Stout, OD, and Nathan Lighthizer, OD 6 My Perspective MMWR and Contact Lens Alerts The Chicken-and-Egg By Joseph P. Shovlin, OD Problem of MGD and Contact Lens Wear Which came fi rst, the dysfunction or the 8 Pharma Science & Practice discomfort? Researchers aren’t sure, 16 but clinicians need to manage them Is a Sustained Medication Delivery simultaneously. System on the Horizon? By Arthur B. Epstein, OD By Elyse L. Chaglasian, OD, and Tammy Than, MS, OD Lids, Friction and 10 Practice Progress Contact Lens Wear Put a Lid on CL Discomfort Does a relatively new phenomenon help explain contact lens discomfort? By Mile Brujic, OD, and Jason R. Miller, OD, MBA By Sruthi Srinivasan, PhD, BSOptom, 20 FAAO 36 The GP Experts Don’t Forget to Check the Lids By Robert Ensley, OD, and CE — How Lid Malposition Heidi Miller, OD Can Compromise Contact Lens Wear 38 Out of the Box Keep these conditions in mind Brand Yourself, and They Will Come 24 to prevent or By Gary Gerber, OD rectify potential obstacles to a successful fi t. By Steven Turpin, MS, and Leonid Skorin Jr., OD, DO, MS How Would You Handle These Refractive Surgery Controversies? Despite the procedure’s popularity, some issues still remain. How should you 30 address them? By Aaron McNulty, OD, and Ian McWherter, OD Become a Fan on Follow Us On Facebook Twitter /ReviewofCorneaAndContactLenses @RCCLmag REVIEW OF CORNEA & CONTACT LENSES | OCTOBER 2016 3 003_1016RCCL_TOC.indd 3 9/29/16 6:31 PM News Review IN BRIEF US Refractive Surgeons Now ■ Conjunctival chemosis may be a mark- er to help clinicians predict Pseudomo- nas aeruginosa as the bacterial agent Ready to SMILE responsible for certain corneal ulcers, new research suggests. A masked review looked at 62 infective corneal ulcers new refractive surgery femtosecond laser—translates into and found 14 of 16 cases of P. aerugino- option, Zeiss’s VisuMax better outcomes, and newer studies sa–related corneal ulcers presented with conjunctival chemosis, compared with small incision lenticule report refractive outcomes superior only six of the remaining 46 cases caused extraction (SMILE) to the 2008-2009 results.4,5 1 A by other organisms. Whether or not che- procedure, recently received FDA The FDA’s approval came on the mosis was present predicted or excluded P. aeruginosa with roughly 87% accuracy, approval. The SMILE procedure in- heels of a study demonstrating posi- the researchers conclude.1 volves the creation of a disc-shaped tive visual acuity and refractive pre- 1. Michael KB, Rotchford A, Ramaesh K. lenticule in the stroma using a fem- dictability outcomes for 336 eyes Conjunctival chemosis as a specifi c feature of Pseudomonas aeruginosa corneal ulcers. Cornea. tosecond laser, which the surgeon treated with the SMILE procedure, 2016;35(9):1182-4. removes through a small incision— according to a Zeiss press release.6 ■ A new study sheds light on the impact obviating both the creation of a fl ap The study found participants had environmental conditions have on tear infl ammatory mediators in contact lens and use of an excimer laser needed stable vision six months post-pro- wearers.1 Fifty-four CL wearers were for LASIK. cedure, and all but one subject had exposed to two environmental condi- “Since there is no fl ap, there are uncorrected visual acuity of 20/40 tions: standard (50% relative humidity) or adverse (5% relative humidity). The no fl ap related issues. There is also or better; 88% had uncorrected researchers analyzed changes in concen- vastly less interruption of nerve visual acuity of 20/20 or better. tration of: epidermal growth factor (EGF); interleukin (IL)-1 receptor antagonist, IL- fi bers so one would anticipate The SMILE procedure is indicat- 1β, IL-2, IL-4, IL-6 and IL-8; tumor necrosis less dry eye,” says John F. Doane, ed for the reduction or elimination factor α; monocyte chemoattractant protein-1; and matrix metalloproteinase MD, of Discover Vision Centers in of myopia of -1.00 D to -8.00D, (MMP)-9. Under standard conditions, EGF Kansas City, MO, a clinical inves- with ≤ -0.50D cylinder and MRSE increased signifi cantly while IL-1β and IL-2 tigator for Zeiss. “The refractive -8.25D in patients at least 22 years decreased signifi cantly. Under adverse conditions, IL-6 increased signifi cantly. results are essentially the same. old with documented stable refrac- During CL wear, secretion of several in- Interestingly, since the surgery is tion over the past year, Zeiss says. fl ammatory mediators varies, depending on the type of CL and the environmental done in a vacuum—i.e., the corneal “If worldwide acceptance fore- conditions at play, the study concludes.1 stroma that is not exposed to the shadows what will occur in the 1. Martín-Montañez V, Enríquez-de-Salamanca A, atmosphere—the procedure is dose United States, we can expect quick López-de la Rosa A, et al. Eff ect of environ- mental conditions on the concentration of tear independent. We are just as predict- uptake of the SMILE procedure,” infl ammatory mediators during contact lens able with a -1D as we are with a Dr. Doane suggests. Over half a wear. Cornea. 2016;35(9):1192-8. -10D, which is unique to all prior million procedures have been per- ■ Researchers recently evaluated the effi cacy and safety of transcutaneous corneal refractive procedures.” formed worldwide, Zeiss says. electrical stimulation for symptoms A recent study examined the fi ve- and clinical signs of dry eye. The study 1. Blum M, Täubig K, Gruhn C, et al. Five-year results year results of the fi rst 56 eyes treat- of small incision lenticule extraction (ReLEx SMILE). included 27 patients with dry eye who Br J Ophthalmol. 2016;100:1192–5. underwent transcutaneous electrostim- ed with SMILE for myopia in 2008- 1 2. Zalentein WN, Tervo TM, Holopainen JM. Sev- ulation, wherein electrodes were placed 2009 using the 200kHz VisuMax. en-year follow-up of LASIK for myopia. J Refract onto the periorbital region of both Researchers found a mean regres- Surg. 2009;25:312–8. eyes in addition to manual stimulation 3. Sekundo W, Bönike K, Mattausch P, et al. Six-year with a hand-piece conductor.1 Results sion of −0.48D over fi ve years, follow-up of laser in situ keratomileusis for moderate showed the Ocular Surface Disease Index and extreme myopia using a fi rst-generation excimer improved from 43.0±19.2 at baseline to which is at least as good as the data laser and microkeratome. J Cataract Refract Surg. 25.3±22.1 at the completion of treatment.1 of other procedures, they noted— 2003;29:1152–8. 4. Ivarsen A, Asp S, Hjortdal J. Safety and complica- These improvements were maintained at the mean regression for LASIK is six- and 12-month follow-up evaluations. tions of more than 1500 small-incision lenticule ex- 0.63D to 0.97D after six to seven traction procedures. Ophthalmology. 2014;121:822–8. As the study suggests it improves dry eye 5. Blum M, Kunert KS, Gille A, et al. LASIK for myopia without adverse eff ects, transcutaneous years.2,3 They conclude SMILE is an using the Zeiss VisuMax femtosecond Laser and MEL electrical stimulation shows potential to effective, stable and safe procedure 80 Excimer Laser. J Refract Surg. 2009;25:350–6. widen the scope of treatment options for 6. Zeiss. Zeiss receives US FDA Approval for dry eye. for myopia and myopic astigmatism VisuMax SMILE vision correction procedure, the 1 latest advancement in laser eye surgery. Press 1. Pedrotti E, Bosello F, Fasolo A, et al.
Load more

Recommended publications
  • Scleral Lenses and Eye Health
    Scleral Lenses and Eye Health Anatomy and Function of the Human Eye How Scleral Lenses Interact with the Ocular Surface Just as the skin protects the human body, the ocular surface protects the human Scleral lenses are large-diameter lenses designed to vault the cornea and rest on the conjunctival tissue sitting on eye. The ocular surface is made up of the cornea, the conjunctiva, the tear film, top of the sclera. The space between the back surface of the lens and the cornea acts as a fluid reservoir. Scleral and the glands that produce tears, oils, and mucus in the tear film. lenses can range in size from 13mm to 19mm, although larger diameter lenses may be designed for patients with more severe eye conditions. Due to their size, scleral lenses consist SCLERA: The sclera is the white outer wall of the eye. It is SCLERAL LENS made of collagen fibers that are arranged for strength rather of at least two zones: than transmission of light. OPTIC ZONE The optic zone vaults over the cornea CORNEA: The cornea is the front center portion of the outer Cross section of FLUID RESERVOIR wall of the eye. It is made of collagen fibers that are arranged in the eye shows The haptic zone rests on the conjunctiva such a way so that the cornea is clear. The cornea bends light the cornea, overlying the sclera as it enters the eye so that the light is focused on the retina. conjunctiva, and sclera as CORNEA The cornea has a protective surface layer called the epithelium.
    [Show full text]
  • Large Diameter Scleral Lens Benefits for Asians with Intractable Ocular
    www.nature.com/scientificreports OPEN Large diameter scleral lens benefts for Asians with intractable ocular surface diseases: a prospective, single‑arm clinical trial Jayoon Moon1,2,7, Sang‑Mok Lee3,4,7, Joon Young Hyon1,5, Mee Kum Kim1,2, Joo Youn Oh1,2 & Hyuk Jin Choi1,2,6* To report the efcacy and safety of large diameter scleral lenses and determine their suitability in Asian subjects with intractable ocular surface diseases. This prospective study enrolled intractable ocular surface diseases subjects with uncorrected visual acuity > counting fnger but ≥ 0.3 logMAR and best‑corrected visual acuity (BCVA) ≥ 0.3 logMAR, to ft large diameter scleral lenses for 12 weeks. 21 eyes (13 subjects) consisting ten eyes (47.6%) with persistent epithelial defects, 6 (28.6%) with graft‑ versus‑host disease, 4 (19.0%) with Stevens–Johnson syndrome and one (4.8%) with severe dry eye were ultimately enrolled. Primary outcome measures were the visual acuity, corneal and conjunctival fuorescein staining, Ocular Surface Disease Index (OSDI), and National Eye Institute 25‑Item Visual Function Questionnaire (NEI‑VFQ‑25). At week 12 with large diameter scleral lenses, BCVA improved from 0.77 logMAR to 0.27 logMAR (P < 0.001). High‑grade corneal and conjunctival fuorescein staining proportion decreased from 61.90 to 14.29% and 52.38 to 9.52%, respectively (P = 0.0036 and 0.0063, respectively). OSDI and NEI‑VFQ‑25 improved from 67.89 to 34.69 and 51.40 to 64.48, respectively (P < 0.001). No adverse efects were observed. In Asians with intractable ocular surface diseases, large diameter scleral lens improves visual acuity and alleviates signs and symptoms of ocular surface diseases without any signifcant complications.
    [Show full text]
  • Melissa Barnett, OD, FAAO, FSLS, FBCLA
    Melissa Barnett, OD, FAAO, FSLS, FBCLA University of California, Davis Eye Center ABB Ocusoft Acculens Paragon Bioteck Alden Optical Percept Alcon Science Based Health Allergan Scleral Lens Education Society Anthem, INC Shire Bausch + Lomb Sjogren’s Syndrome Foundation Bruder STAPLE program Contamac SynergEyes CooperVision Visioneering Technologies JJVC Vistakon Gas Permeable Lens Institute Scleral lenses are large diameter gas permeable lenses that rest beyond the limits of the cornea and extend onto the sclera. Popular Mechanics, 1948 Made from impression mold of eye Difficult to make Problem with hypoxia www.college-0ptometrists.org First used in late 1800s and early 1900s Manufacturing process now more reproducible Modern scleral lenses . Don Ezekiel, O.D. Ken Pullum, O.D. Perry Rosenthal, M.D. Boston Scleral Lens www.sclerallens.org Corneal ectasias • Primary corneal ectasias . Advanced (notably decentered) keratoconus . Keratoglobus . Pellucid marginal degeneration • Secondary corneal ectasias . Post-LASIK . Post-PRK . Post-RK Corneal transplants Corneal degenerations or Trauma dystrophies Corneal scars . Salzmann’s nodular degeneration . Terrien’s marginal degeneration Persistent epithelial defects Severe dry eyes . Graft versus host disease . Sjögren’s syndrome . Stevens Johnson syndrome . Neurotrophic keratopathy Neurotrophic Keratitis Exposure Keratitis Dry Eye Syndrome Graft vs Host Disease Steven Johnson Syndrome Ocular Cicatricial Pemphigoid Chemical Burns Limbal Stem Cell Failure Sjogren’s Syndrome Persistent Epithelial Defect Inflammatory conditions . Limbal stem cell deficiency . Ocular cicatricial pemphigoid Neovascularization with hybrid lens designs Poor comfort with traditional gas permeable designs High refractive error Corneas with significant edema from reduced endothelial cell count Fuch’s corneal dystrophy Glaucoma? Picot, C, Gauthier, AS, Campolmi, N, Delbosc B J Fr Ophtalmol.
    [Show full text]
  • Clinical Guide for Scleral Lens Success Melissa Barnett, Daddi Fadel 2 Cover Image: Credited to Melissa Barnett
    Clinical Guide for Scleral Lens Success Melissa Barnett, Daddi Fadel 2 Cover Image: Credited to Melissa Barnett. Description: This manuscript is the result of a collaborative effort between the Scleral Lens Education Society (SLS) and the Accademia Italiana Lenti Sclerali (AILeS). Acknowledgements: The authors wish to thank the Scleral Lens Education Society and Accademia Italiana Lenti Sclerali Board members, Robert Ensley, Luigi Lupelli, and Gregg Russell for reviewing this manuscript. Publication date: 2018 Recommended Citation: Barnett M, Fadel D. Clinical Guide for Scleral Lens Success. SLS & AILeS. 2018 Available and published by 3 Melissa Barnett OD, FAAO, FSLS, FBCLA, is the principal optometrist at the UC Davis Eye Center in Sacramento, CA. She is an internationally recognized key opinion leader, who lectures and publishes extensively on anterior segment disease and specialty contact lenses. She is a Fellow of the American Academy of Optometry and the British Contact Lens Association, a Diplomate of the American Board of Certification in Medical Optometry, and serves on the board of the American Optometric Association Cornea and Contact Lens Council, Women in Optometry and Women of Vision, Gas Permeable Lens Institute, and Ocular Surface Society of Optometry. She is past president of the Scleral Lens Education Society. Dr. Barnett is a spokesperson for the California Optometric Association and a guest lecturer for the STAPLE program. Drs. Melissa Barnett and Lynette Johns edited the book Contemporary Scleral Lenses: Theory and Application with the unique perspectives and contributions of international experts. She is an advisor to and/or has received honoraria or travel expenses from AccuLens, Alcon, Alden Optical, Allergan, Bausch + Lomb, Contamac, Johnson & Johnson Vision, Novabay, Ocusoft, Paragon Biotek, Shire, the Sjögren’s Syndrome Foundation, the Scleral Lens Society, the STAPLE Program, SynergEyes, and Visioneering Technologies.
    [Show full text]
  • Scleral Contact Lenses and Their Therapeutic Use – Part 1 How Should a Scleral Lens Be There Are Many Misconceptions About Scleral Lens Practice
    CET Scleral contact lenses and their therapeutic use – Part 1 How should a scleral lens be There are many misconceptions about scleral lens practice. In the defined? A scleral contact lens (ScCL) has its first of two articles, Jennifer McMahon aims to answer the most bearing surface on the sclera and is fitted with no or minimal corneal commonly asked questions about the role of scleral lenses and to contact. The objective is alignment give an appreciation of their unique place in modern contact lens of the scleral zone with the sclera to create a sealed unit that does not exhibit fitting. Module C17107, one point for contact lens specialists edge lift as would be observed in both large and regular diameter corneal lens fitting (Figure 1). Haven’t ScCLs been around for a long time? Clear of cornea Yes, ScCLs date back to the late 19th century but then they were made from Vaulting at limbus blown glass. PMMA succeeded glass as Bearing the material of choice in the 1940s as it on sclera could be heat moulded to replicate an eye impression and lathe cutting techniques could be employed. However, when corneal lenses were developed in the 1950s, ScCLs fell from use as the first choice contact lens option due to the complicated fitting process and the Figure 1 Representation of optimum fitting of a preformed relatively limited oxygen available to non-fenestrated ScCL the cornea. It was the introduction of RGP materials in the 1980s, allowing the manufacture of non-fenestrated ScCLs, that re-established them as a viable clinical option.
    [Show full text]
  • A Guide to Scleral Lens Fitting (2 Ed.) Eef Van Der Worp College of Optometry, Pacific Nu Iversity
    Pacific nivU ersity CommonKnowledge Monographs, Reports, and Catalogs Pacific nivU ersity Libraries 2015 A Guide to Scleral Lens Fitting (2 ed.) Eef van der Worp College of Optometry, Pacific nU iversity Follow this and additional works at: http://commons.pacificu.edu/mono Part of the Optometry Commons Recommended Citation van der Worp E. A Guide to Scleral Lens Fitting, Version 2.0 [monograph online]. Forest Grove, OR: Pacific nivU ersity; 2015. Available from: http://commons.pacificu.edu/mono/10/. This Book is brought to you for free and open access by the Pacific nivU ersity Libraries at CommonKnowledge. It has been accepted for inclusion in Monographs, Reports, and Catalogs by an authorized administrator of CommonKnowledge. For more information, please contact [email protected]. A Guide to Scleral Lens Fitting (2 ed.) Description A new, updated version of the Guide to Scleral Lens Fitting has been launched recently. As the editor of the guide, I had the pleasure of working with an international team of over twenty experts in the field – from all over the world. Personally it feels like the guide only now is finalized, after so many years since its first edition. What started as a ‘simple’ revision of this first edition ended up as a complete makeover of the entire guide. Most probably – almost literally – not a single sentence came out untouched. Although some questions surely remain in the scleral lens arena – the overall consensus and agreement on things is much better than it was back in 2010 at the time the first edition took shape. It tries to be a state-of-the-art resource – well balanced between the benefits that we know sclerals can have, and the risks and pitfalls that it involves.
    [Show full text]
  • Contact Lenses Wearing. How Much Do Patients Know and How to Improve It
    Innovative Journal of Medical and Health Science 6:6 November – December (2016) 171 – 182. Contents lists available at www.innovativejournal.in INNOVATIVE JOURNAL OF MEDICAL AND HEALTH SCIENCE Journal homepage: http://innovativejournal.in/ijmhs/index.php/ijmhs CONTACT LENSES WEARING. HOW MUCH DO PATIENTS KNOW AND HOW TO IMPROVE IT. Mohammed Talouzi,Walid Sharif, Ibrahim Elaraoud Birmingham and Midlands Eye Centre ARTICLE INFO ABSTRACT Corresponding Author: Aim:To assess the level of knowledge and experience of contact lens users Ibrahim Elaraoud who have attended the eye casualty seeking advice and treatment for contact Birmingham and Midlands Eye lens related problem. The articlewill also providea concise review of the Centre literature regarding contact lens history, types, uses and complications and [email protected] explore the pathophysiology of the contact lens related conditions. The article will discuss the management and preventive measures for those conditions Key words: Women’s autonomy, that may lead to blindness. Methods: Prospective review of patients who maternal health, decision making. have attended a regional eye casualty over a period of January to March 2015.Patients were recruited following the triage details provided. The inclusion criteria was all contact lens users aged16years and above and have been using contact lens for a minimum of 6 months. Survey questionnaire were given to patients who filled them prior to their consultation with the DOI:http://dx.doi.org/10.15520/ij ophthalmologist. The audit was registered with the clinical effectiveness mhs.2016.vol6.iss6.144. department of the author’s Trust. Extensive review of the literature in regards to contact lens also has been carried out.
    [Show full text]
  • Medical Policy
    Medical Policy Joint Medical Policies are a source for BCBSM and BCN medical policy information only. These documents are not to be used to determine benefits or reimbursement. Please reference the appropriate certificate or contract for benefit information. This policy may be updated and is therefore subject to change. *Current Policy Effective Date: 5/1/21 (See policy history boxes for previous effective dates) Title: Corneal Liquid Bandage Lens for Corneal Epithelial Defects/Scleral Lenses Description/Background Patients suffering from chronic severe corneal disease (causing persistent epithelial defects or PEDs) that has not responded to conventional treatment face a lifetime of pain and limited vision, to the point of eventual total blindness. Some of the symptoms associated with PEDs include eye pain, severe dryness, excessive tearing, extreme sensitivity to light (photophobia), inflammation of the eye and blurry vision. Some conditions which may result in persistent ocular surface disease include, but are not limited to: • Chemical, thermal or traumatic injury • Congenital eyelid defects • Herpes zoster • Keratoconus • Neurotrophic keratopathy (a degenerative disease of the corneal epithelium and stroma that results from impaired corneal innervation) • Ocular graft versus host disease • Reactions to various drug treatment regimens • Refractive surgery, including LASIK surgery • Sjögren’s syndrome • Stevens-Johnson syndrome • Other disorders and dystrophies Conventional treatment of PEDs have include the use of include prophylactic topical antibiotic drops or ointments, non-preserved ocular lubricants, eye-patching, and bandage contact lenses. In extremely difficult cases, oral doxycycline, autologous serum, and the surgical application of an amniotic membrane, tarsorrhaphy or a conjunctival flap are used alone or in 1 combination.
    [Show full text]
  • Managing Irregular Corneas with Soft Lenses
    JANUARY/FEBRUARY 2020 REVIEW OF CORNEA & CONTACT LENSES CONTACT LENS FITTING FOR COMPROMISED CORNEAS Managing Irregular Corneas with Soft Lenses brighten your astigmatic patients’ day Clinical observations will aid in choosing a lens designwith that o expanded ers the appropriate features for patients. Page 12 prescription options. The obliques are here! clariti® 1 day toric will have the largest number of prescription options of any SiHy 1-day toric lens.1 How Lenses Help Corneas Prescribe even more patients SiHy at the price of a hydrogel. Page 8 Visit claritiGivesYouMore.com to learn more. Prosthetic Lens Fitting Pearls Page 18 Tackling Post-op CL Challenges Additional axes also Page 24 coming soon When Old Mainstays Save the Day in the -2.25 cylinder and Page 38 plus powers. ALSO: Blink Mechanics: Why it Matters — EARN 2 CE CREDITS toric Page 30 ©2019 CooperVision 8607 12/19 from the experts in torics: more prescription options than ever clariti® 1 day toric: has around-the-clock axes, will have the largest number of prescription will expand its prescription enabling you to provide coverage options of any SiHy 1-day toric contact lens1 options by nearly 50%1 for most astigmatic patients2 additional prescription options sphere power cylinder axes plano to -6.00D -0.75, -1.25, -1.75 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180° (0.25D steps) -2.25 10°, 20°, 70°, 80°, 90°, 100°, 110°, 160°, 170°, 180° -6.50D to -9.00D -0.75, -1.25, -1.75 10°, 20°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 160°, 170°, 180° (0.50D steps) -2.25 10°, 20°, 90°, 160°, 170°, 180° +0.25D to +4.00D -0.75, -1.25, -1.75 10°, 20°, 70°, 80°, 90°, 100°, 110°, 160°, 170°, 180° (0.25D steps) axes in purple indicate prescriptions now available.
    [Show full text]
  • Scleral Faqs
    PRINCETON EYE GROUP SCLERAL CONTACT US: FAQS Princeton Eye Group Office: 900 Easton Ave, Suite 50 WHY ARE SCLERAL LENSES SO Somerset, NJ 08873 COMFORTABLE? Website: princetoneyegroup.com Phone: 609.921.9437 Scleral lenses vault over the cornea and rest on the white portion of the eye (sclera), which is less sensitive. They fit under the eyelid, resulting in comfort & stability. DR. TIFFANI METHVIEN FIRM LENSES LARGER LENSES ADVANCED SPECIALTY Sharp Vision Comfort & Stability CONTACT LENSES Dr. Tiffani Methvien received her Doctorate from the Pennsylvania College of Optometry along WHY DO SCLERAL LENSES OFFER with a certificate of excellence in patient care. SUPERIOR VISION? Additionally, she holds a Bachelor of Arts from HOW They are manufactured in Gas Permeable (GP) material Rider University. She focused on specialization which provides a smooth optical surface and excellent vision in contact lenses while working with Dr. Edward even if your cornea has an irregular shape. Scleral lenses Boshnick at Global Vision Rehabilitation Center SCLERAL treat astigmatism and are available with bifocal options. in Miami, FL. Dr. Methvien received recognition from Visionary LENSES WHAT IS THE ‘LIQUID BANDAGE’ Optics and Conforma Labs for excellence in EFFECT? patient care treatment with contact lenses. She CAN HELP YOU works closely with Dr. Miedziak in managing Scleral lenses provide extra moisture for healthy eyes, keratoconus focusing on providing customized as well as for patients with severe dry eyes. The space care of corneal diseases and pathology with the between your eye and the back of the scleral lens acts as latest in contact lens technology, including fitting a fluid reservoir that provides constant moisture & comfort.
    [Show full text]
  • Potential Contraindications to Scleral Lens Wear ⁎ Daddi Fadela, , Elise Kramerb a Doptom, Private Practice, Rome, Italy B OD, Private Practice, Miami, USA
    Contact Lens and Anterior Eye xxx (xxxx) xxx–xxx Contents lists available at ScienceDirect Contact Lens and Anterior Eye journal homepage: www.elsevier.com/locate/clae Review article Potential contraindications to scleral lens wear ⁎ Daddi Fadela, , Elise Kramerb a DOptom, Private practice, Rome, Italy b OD, Private practice, Miami, USA ARTICLE INFO ABSTRACT Keywords: Research and reviews have resulted in clear indications for scleral lens (SL) wear. Those indications include Scleral lens visual rehabilitation; therapeutic use in managing ocular surface diseases, lid and orbit disorders; and refractive Indications correction to enhance visual quality, comfort and quality of life. In some cases, the use of SLs may be contra- Contraindications indicated: the presence of low endothelial cell density; Fuchs’ endothelial corneal dystrophy; glaucoma (because Endothelial cell density of the risk of an increase in intraocular pressure and the existence and location of draining devices and blebs); or Fuchs’ dystrophy overnight wear. Intraocular pressure Glaucoma While the literature provides an extensive description of the indications for scleral lens wear, the authors Drainage devices recognize that there is no paper reporting the contraindications to their use. The aim of this review is to illustrate Overnight wear the conditions for which SL wear is potentially contraindicated or requires caution. Improved knowledge of SL Patient expectations limits should reduce the risk of adverse events and increase the likelihood of fitting success. 1. Introduction 2. Method of literature search criteria The benefits of scleral lenses (SLs) have been well established inthe The literature reviewed was from PubMed on the 25th February literature since descriptions of glass-blown shells in the late 1800s 2018, using the following keywords, separately and in combination: [1–6].
    [Show full text]
  • Scleral Contact Lenses for Treatment of Ocular Surface Disorders: a Narrative Review
    Sah R, et al., J Ophthalmic Clin Res 2021, 8: 086 DOI: 10.24966/OCR-8887/100086 HSOA Journal of Ophthalmology & Clinical Research Review Article High Oxygen Permeable (HOP) materials and mounting the need for Scleral Contact Lenses for advanced solutions for severe ocular surface disorders have produced the driving pressures for a great amount of different contact lens de- Treatment of Ocular Surface signs to be available [2]. These lenses have become an integral part of the specialty contact lens practice. Tangible Hydra-PEG (Hydra Disorders: A Narrative Review Poly-Ethylene-Glycol) developed by (Tangible Science, LCC, Menlo Park, CA, USA) is a breakthrough custom contact lens coating de- Ramkishor Sah* and Jeewan S Titiyal Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of signed to solve the problems of discomfort and dry eyes. It is Polyeth- Medical Sciences (AIIMS), Ansari Nagar, New Delhi-110029, India ylene Glycol (PEG) based polymer mixture that is clear, water-based coating that is permanently bonded to GP and hybrid contact lenses. It covers lenses in a smooth wet layer designed to maintain natural tear Abstract film, composed of 90% water content and resistant to protein & lipid Scleral lenses have been in the origin of contact lenses back in deposits, which can increase your comfort and wear time [3]. 1880, when the pioneers did the first glass contact lenses. With the advent of highly oxygen permeable materials and the increasing Now a day practitioners can draw from a variety of scleral lenses need for advanced solutions for severe ocular surface disorders has to best fit their patient’s contact lens needs.
    [Show full text]