Our Eyes in a Digital Era

Total Page:16

File Type:pdf, Size:1020Kb

Our Eyes in a Digital Era Our eyes in a digital era Challenges and opportunities for practitioners Dr. Willis C Maples Geraint Griffiths Prof. Gunta Krumina USA United Kingdom Latvia Doctor Willis Clem Maples is currently in practice Geraint Griffiths is an independent optometrist Professor Gunta Krumina is the head of the Department Content at Bellevue Specialty Eye Clinic in Hattiesburg, and owner of Optical3 Opticians. He is the of Optometry and Vision Science at University of Latvia Mississippi (USA) in a practice limited to vision managing director of Sportsvision UK, chair in Riga, director of the optometry bachelor’s programme development and visual rehabilitation issues. of The Association of Sport and Schoolvision and a senior researcher-project leader. She was awarded a In addition to his Doctor of Optometry (OD) Willis Practitioners and author of the Diplomas PhD in medical physics for her research on the correlation Clem Maples has a Master’s in Community Health. in Sport and Schoolvision Practice. He is an between stereothreshold and quality of monocular stimuli. He is a Fellow of the American Academy of Optometry examiner for the College of Optometrists Her main research topics are related to stereovision, visual and he practised privately for 12 years before being and a sportvision expert for the British electrophysiology and clinical optometry. recruited to begin the vision therapy programme at Standards Institute (BSI). He believes that Her latest scientific work has focused on the visual screening the Oklahoma College of Optometry at Northeastern the understanding and management of the of schoolchildren and the visual fatigue of computer users. Introduction 4 State University. He is a professor emeritus of this physiological effects of prisms in monocular She is currently developing a new stereotest aimed at college. He has served as the president of the College and binocular vision are the key to the future of evaluating the crossed and uncrossed disparity for local and of Optometrists in Vision Development (COVD) and ophthalmic optics (optometry and dispensing global stereovision. Digital eye strain 6 twice served as the chair of COVD’s International optics) and the prevention of ocular, systemic The new epidemic Examination and Certification Board. He has received and psychological morbidity. the “Lifetime Achievement Award” from both the College of Optometrists in Vision Development and Visual and ocular symptoms 11 the Southern College of Optometry. He also lectures Computer-related visual and ocular symptoms both in the United States and internationally. Alicja Brenk-Krakowska under the CVSS17 perspective Poland Dr. Thomas Gosling Alicja Brenk-Krakowska is an optometrist and USA Computer Vision Syndrome 15 lecturer at the Laboratory of Vision Science and Optometry at the Adam Mickiewicz New problem or rediscovery of old problems? After graduating from the Illinois College University of Poznań, Poland. After gaining of Optometry in 1992, Dr Thomas Gosling Dr. Wolfgang Jaschinski two bachelor’s degrees and an MSc, in 2006 moved to Green Bay, Wisconsin to join Germany she began her PhD in optometry. In 2010, she Checklist 18 the largest ophthalmology clinic north formally became a lecturer in the Laboratory of of Milwaukee. During his 14-year stay Quality of life checklist: Documenting clinical success Doctor Wolfgang Jaschinski completed Vision Science and Optometry. As a member of in Green Bay, he was the optometrist his electrical engineering degree in the Polish Association of Optometry and Optics for the Packers football team. For the 1976, at the Ruhr-Universität Bochum, (PTOO), she is actively involved in the development Optimising presbyopia corrections 20 past decade, Dr Gosling has worked Germany. Between 1978-1980, he of visual-motor techniques. She is interested in in Denver, Colorado, where he finds An integrated optometric-ergonomic approach: worked as a research associate at the binocular instability in developmental dyslexia, his private practice the perfect Biological Institute, Stuttgart University. the processes of prism adaptation in both children Optimising presbyopia corrections for the computer workstation environment to express the creativity Since 1980, he has been a research and adults with dyslexia as well as lateralisation of behavioural optometry has to offer in a associate at the Leibniz Research Centre attention processes in dyslexics. In addition, she new digital world. In parallel, he acts as a Children’s vision 28 for Working Environment and Human is involved in studies concerning the influence Hoya technology consultant, inventor and Factors (IfADo) in Dortmund. From 1998 to of prism adaptation on sensory-motor functions Does computer vision syndrome really exist in children? entrepreneur. In 2011, he was named one of 2015, he was the head of the Individual Visual in normal patients with evoked left neglect. She the Optometric Business Innovators of the Year. The impact of computers and e-devices on children’s vision Performance research group at IfADo. Since 2015, has presented her research findings at numerous he has been the principle investigator for the Visual conferences in Poland and across Europe and Prof. Bruce Evans Ergonomics research group at IfADo. His main research is the author of many scientific articles. In her A survey of near visual function 32 topics are static and dynamic properties of binocular United Kingdom practice, she is actively engaged in the treatment In Latvian schoolchildren with and without learning difficulties coordination: objective and subjective measurements of of patients with different kinds of reading vergence eye movements; objective measurements of static and Professor Bruce Evans is the director of research problems. dynamic accommodation; optometric and ergonomic aspects of at the Institute of Optometry in London and a Blue light-filtering 38 spectacle lenses to correct for presbyopia; visual and cognitive visiting professor to City University London and influences at manual interaction with visual displays. Clinical performance of blue light-filtering spectacle lenses London South Bank University. He is a fellow of the College of Optometrists and holds their higher qualifications of Diploma in Contact Lens Beating the blues 49 Practice and Diploma in Orthoptics. He was Blue light and its effects on the eyes awarded a fellowship of the American Academy of Optometry in 1993, fellowship of the British Contact Lens Association in 2006 and of the Dr. Mariano González-Pérez Evaluating 51 European Academy of Optometry in 2016. He Spain has lectured and published extensively. His first Evaluating the efficiency of spectacle lenses with accommodative support book, Pickwell’s Binocular Vision Anomalies, Doctor Mariano González-Pérez has a PhD Prof. Giancarlo Montani and a blue light filter Third Edition, was published in 1997, with the fifth in Optics, Optometry and Vision from the Italy edition published in 2007. A subsequent book, Complutense University of Madrid. He works Dyslexia and Vision (2001), is aimed at members as an assistant professor at the same university Professor Giancarlo Montani, optometrist, contact lens specialist of the public, teachers and eye care professionals and is a practicing optometrist at Alain Afflelou and organiser of continuing education courses in optometry in and has been met with critical acclaim. In 2010, Óptico in Madrid. The main outcome of his Italy, started his professional career in 1988 as professor of optics he co-authored Vision and Reading Difficulties for PhD was the development and validation of and optometry at the Institute of Optics and Optometry, Vinci, eye care professionals. He has written over 240 the first Rasch-based linear scale for measuring Italy. Between 1996-2001, he worked as director of the course scientific and professional papers and given computer-related eye symptoms among curriculum. In 2002, he was appointed as head of the Contact Lens more than 250 invited lectures. His main areas of computer workers, the Computer-Vision Division, Ophthalmology Department at Santa Chiara University research are children’s vision, dyslexia, orthoptics, Symptom Scale (CVSS17). This research resulted Medical Centre, Pisa, Italy. Since 2005, he has taught the contact contact lenses, and headaches including in a publication in Investigative Ophthalmology lens courses in the Optics and Optometry Department at the migraine. He has an optometric practice in and Visual Science, two other papers that are University of Salento, Italy. Brentwood, Essex, where he specialises in due to be published shortly and three more He is the founder of the Centro di Ricerche in Contattologia at children’s vision, binocular vision anomalies, communications related to the clinical findings the University of Salento and a referent for Italy of the Eurolens dyslexia and vision, and contact lenses. associated with CVSS17. International Survey of Contact Lens. 2 Our eyes in a digital era - Challenges and opportunities for practitioners Our eyes in a digital era - Challenges and opportunities for practitioners 3 Olga Prenat Global Education Director, Hoya Vision Care INTRODUCTION PAGE 6 If children are pacified by digital displays Dr. Natalia Vlasak Ophthalmologist, and television screens, they may never Senior Clinical Research Specialist, From computer vision syndrome to digital eye strain recover. Global Marketing, Hoya Vision Care PAGE 7 The unnecessary mental and physical effort creates an excessive energy demand The digital
Recommended publications
  • Hereditary Reversion Pigmentation of the Eyelids with Heterochromia of the Iris
    874 LEE MASTEN FRANCIS enucleated. The following report on the Other cells were round with hyper- specimen was submitted from the New chromatic nuclei; while scattered thruout York State Institute for the Study of the tumor were large deeply staining Malignant Diseases: cells with one or two nuclei but free from The gross appearance of a cross sec- pigment. There were apparently two tion of the eye shows a tumor lying in types of pigmented cells, the one a large the lower temporal quadrant of the eye, irregular cell with long protoplasmic evidently springing from the choroid processes densely filled with fine yellow- near the margin of the optic disc. This ish granules, evidently chromatophores. tumor measured 15x10 mm. and was The other type of pigmented cell was a slightly nodular irregular ovoid tumor. evidently a tumor cell of the type men- The surface appeared smooth, was dark tioned above but containing fewer gran- gray in color and was of a soft consist- ules than the chromatophores. Thruout ency. The retina was markedly detached the tumor were small areas of hemor- and contained a clear serous fluid. Cross rhage and between the cells could be section of the tumor mass showed a demonstrated here and there, free pig- deeply pigmented homogeneous surface. ment granules. Microscopically, the tumor varied as From this picture, we would make a to the cellular constituents. There were diagnosis of malignant melanoma, fre- areas showing many pigment cells and quently called melanosarcoma, but by other areas almost free from the same. some authorities considered as melanotic The tumor was very vascular showing many fine capillaries around which in carcinoma.
    [Show full text]
  • Eye Tester's Manual
    EYE TESTER’S MANUAL Before using your vision (eye) tester GnomE read this manual carefully to ensure correct use. 1. GENERAL INSTRUCTIONS The home Eye Tester GnomE (or Tester) is a compact, autonomous optical instrument protected by the patent of Russian Federation No. 2202937. The main function of the Tester is to quickly check the parameters of the vision on your own at home or at working place. The Tester can be used in room conditions: - ambient temperature from +10 C to +35 C; average humidity at ambient temperature +25 C from 30% to 80% Absolute measurement accuracy is 0.25 diopter. Dimensions: 14 mm in diameter and 75 mm long Weight (without a case) up to 20g As the Tester is used in proximity to eyes take care of your movements. The Tester is made from safe materials (glass and metals). Please, avoid strong impacts caused by bumping or dropping the tester. The Tester imitates the operation of different kinds of glasses when eye watches remote objects. MEASURING PARAMETERS OF VISION. Checking near- and farsightedness Sit down and make yourself comfortable, take off your glasses or contact lens and hold that part of the Tester where the objective is with your hand (see photo). Look inside the tester through a lens with a checking eye, and read minimal and maximal digits at the scale. The scale looks like a watch, where 12 o’clock corresponds to zero on the scale and normal vision. There are negative values to the left from zero, and positive numbers to the right on the scale too.
    [Show full text]
  • Blue Light and Your Eyes
    Blue Light and Your Eyes What is blue light? 211 West Wacker Drive, Suite 1700 Sunlight is made up of red, orange, yellow, green, blue, indigo and Chicago, Illinois 60606 violet light. When combined, it becomes the white light we see. 800.331.2020 Each of these has a different energy and wavelength. Rays on the PreventBlindness.org red end have longer wavelengths and less energy. On the other end, blue rays have shorter wavelengths and more energy. Light that looks white can have a large blue component, which can expose the eye to a higher amount of wavelength from the blue end of the spectrum. Where are you exposed to blue light? The largest source of blue light is sunlight. In addition, there are many other sources: • Fluorescent light • CFL (compact fluorescent light) bulbs • LED light • Flat screen LED televisions • Computer monitors, smart phones, and tablet screens Blue light exposure you receive from screens is small compared to the amount of exposure from the sun. And yet, there is concern over the long-term effects of screen exposure because of the close proximity of the screens and the length of time spent looking at them. According to a recent NEI-funded study, children’s eyes absorb more blue light than adults from digital device screens. This publication is copyrighted. This sheet may be reproduced—unaltered in hard print (photocopied) for educational purposes only. The Prevent Blindness name, logo, telephone number and copyright information may not be omitted. Electronic reproduction, other reprint, excerption or use is not permitted without written consent.
    [Show full text]
  • Field Review: FIT Close up Lenses. by Alex Mustard
    Field Review: FIT Close Up Lenses. By Alex Mustard Supermacro images are will give me the magnification while commonly defined as pictures shot minimising the drawbacks of any at magnifications of greater than 1:1 single accessory. Typically, I favour (Left) The FIT +5 dioptre: achromatic, dual element and 67mm threaded. (real life versus actual size on your adding a teleconverter behind my SLR (Right) The achromatic, dual element FIT +8 dioptre, is smaller but comes with sensor). Since most of the popular lens and dioptre to the front of it. a step up ring to 67mm. There was not cut off from the filter with my 105mm lens macro lenses will take us down to This article is a review of the when used singly or stacked with the +5. 1:1, we need an accessory to become newly released FIT dual element, super. There are many, many methods achromatic dioptre lenses, sold in for achieving supermacro, indeed (out of the water) strengths of +5 and I have often joked that I want to +8. External dioptres have always write an instructional underwater been popular underwater because photography book called “101 Ways they can be added and removed To Supermacro”, with a century and underwater. While many value this one photos each taken with a different feature – it has never been that kit configurations. important for me because I believe In simple terms there are that the best underwater images tend 5 types of accessories that we to be taken when dives are dedicated regularly use to transform our macro in the pursuit of a particular type of lenses to super-status underwater: images.
    [Show full text]
  • Eyemed Blue Light
    BLUE LIGHT: FREQUENTLY ASKED QUESTIONS From ZZZs to disease, the blue light battle is on It’s indisputable: our eyes are overexposed to digital devices like never before. And in the background hides potentially harmful blue light that may affect our sleep, or even cause long-term vision issues. But, here’s some good news — you can act now to potentially minimize vision issues later with advanced lens filtering technology formulated to guard your eyes. Q: WHAT IS BLUE LIGHT? A: Blue light is a natural part of the light spectrum visible to the human eye; it can come from fluorescent lighting, electronic screens, and of course, the sun. By day, blue light can be associated with boosted mood and attention, but by night, it can be a culprit of interrupted sleep. 1 Q: HOW DOES BLUE LIGHT INTERRUPT SLEEP? A: Researchers know that exposure to light at night suppresses the secretion of melatonin, a hormone that tells us when it is time to sleep. And an extended lack of deep sleep has been linked to depression and a decline in the body’s ability to fight off certain diseases. 1 Q: CAN BLUE LIGHT EXPOSURE CAUSE LONG-TERM DAMAGE TO MY EYESIGHT? A: In addition to disrupting sleep, blue light has been found to contribute to retinal stress, which could lead to an early onset of age-related macular degeneration (AMD).2 Macular degeneration deteriorates healthy cells within the macula, creating a loss of central vision that may impact reading, writing, driving, color perception and other cognitive functions. In serious cases, blindness can occur.
    [Show full text]
  • Taking Care of Our Eyes in the 21St Century Presented By: Carla Haynal Proprietary and Confidential | 1 HOW HAS the 21ST CENTURY AFFECTED OUR EYES?
    Taking Care of Our Eyes in the 21st Century Presented by: Carla Haynal Proprietary and Confidential | 1 HOW HAS THE 21ST CENTURY AFFECTED OUR EYES? • Lots of apps, social media, smartphones, and tablets • Time is spent looking at screens and not outside • More close-up work Proprietary and Confidential | 2 HOW HAS THE 21ST CENTURY AFFECTED OUR EYES? • Digital eye strain • Increased cases of myopia (nearsightedness) • Unprotected UV ray exposure Proprietary and Confidential | 3 DIGITAL EYE STRAIN DIGITAL EYE STRAIN • Digital eye strain is the physical discomfort felt after prolonged exposure to digital screens. • The light intensity increases the closer our eyes are to the source, so it’s important to maintain your digital distance. Proprietary and Confidential | 5 SYMPTOMS OF DIGITAL EYE STRAIN • Sore, tired, burning or itching eyes • Watery or dry eyes • Blurred or double vision • Headache • Sore neck, shoulders, or back • Increased light sensitivity • Difficulty concentrating • Feeling that you cannot keep your eyes open Proprietary and Confidential | 6 DIGITAL EYE STRAIN ProprietaryProprietary andand ConfidentialConfidential || 77 DIGITAL EYE STRAIN Millennials GenXers Boomers 40% 60% 25% use devices use devices use devices 9 hours a day 9 hours a day 9 hours a day Proprietary and Confidential | 8 DIGITAL EYE STRAIN KEEP AN Reduce exposure with INCREASE BLUE LIGHT- ARM’S FONT SIZE REDUCING on digital devices LENGTH eyewear from computer 20 | 20 | 20 Every 20 minutes, look 20 feet away for 20 seconds. Proprietary and Confidential | 9 WHAT IS BLUE LIGHT? BLUE LIGHT • Blue light is the highest energy portion of visible light. • The sun, smart phones, tablets, computer monitors, TVs, and LED and CFL all emit blue light.
    [Show full text]
  • Automated Refraction Toolkit
    COLLEGE of OPTICIANS OF BRITISH COLUMBIA a B.C. Health Regulator Automated Refraction Toolkit Table of Contents: Steps to become certified ..................................... pg 2 Frequently Asked Questions ................................ pg 3-4 Forms a) Keeping your eyes healthy (patient info) ....... pg 5-6 b) Client notice ................................................... pg 7 c) Assessment record template ......................... pg 8 All forms can be downloaded off the College website. Questions? [email protected] or (604) 742-6472 College of Opticians of British Columbia Automated Refraction Toolkit Version 02.2018 "1 Steps to become a certified automated refracting optician The College has established high qualifications, professional standards and strict guidelines around independent automated refraction to safeguard public safety. Only certified opticians who are trained to safely and e fectively perform automated refraction are legally permitted to assess visual acuity. Opticians who are not certified in automated refraction cannot perform this service. To become certified to conduct independent automated refractions, opticians must complete the following steps: 1) Approved certification program 2) Jurisprudence examination 3) Certification application form and fees Approved certification program The following programs are approved by the College, under terms and conditions established by the Board and with the terms ending on the dates indicated, as meeting the standards of academic or technical achievement required for
    [Show full text]
  • Assessing the Factors and Prevalence of Digital Eye Strain Among Digital
    Int J Med. Public Health. 2021; 11(1):19-23. A Multifaceted Peer Reviewed Journal in the field of Medicine and Public Health Original Article www.ijmedph.org | www.journalonweb.com/ijmedph Assessing the Factors and Prevalence of Digital Eye Strain among Digital Screen Users using a Validated Questionnaire – An Observational Study Shashi Ahuja1,*, Mary Stephen1, Naveen Ranjith1, Parthiban2 ABSTRACT Introduction: Digital screen usage has grown up rampantly and various ocular complaints arise as a result of the same. Digital eye strain causes constant trouble to people with prolonged digital screen usage and this study was done to find the factors in digital screen that could be modified to reduce the eye strain.Methods: In this study a validated questionnaire was used among computer users and various symptoms people experienced were analysed. Dry eye test i.e. Schirmer’s tests I and II were performed in all the study subjects and dry eye was confirmed among the users. Results: In our study grittiness was the most common complaint and questionnaire employed in this study was 85 % sensitive and 72 % specific for identifying Digital eye strain. It also has a high positive predictive value of 85.6% in identifying dry eye among the users. In this study it has been found that almost all people with computer screen usage of >5 hr had symptoms of dry eye and also test positive for the same. Conclusion: Digital eye strain present most commonly as minor complaints like grittiness of eyes and more symptoms are seen in people who used contact lens and used digital screen for prolonged duration.
    [Show full text]
  • LENS EFFICIENCY-A CLINICAL CONCEPT*T the Accommodation
    Br J Ophthalmol: first published as 10.1136/bjo.30.5.291 on 1 May 1946. Downloaded from LENS EFFICIENCY 291 LENS EFFICIENCY-A CLINICAL CONCEPT*t BY JOSEPH I. PASCAL NEW YORK THE fact tllat a lens has a different effectivity depending upon its position before the eye is well known. We say a convex lens gains in effectivity when moved away from the eye and loses in effect- ivity when moved closer to the eye. A concave lens behaves in just the opposite way. There is, however, another feature of changes in lens power which is not dependent upon movement farther from or nearer to the eye. This variable lens effect may be -called its "efficiency," which may be of an ascending order, termed positive efficiency or of a- descending order termed negative efficiency. A similar gradation of efficiency may be postulated with r8ference to the accommodation. It is well known that if a natural emmetrope, an uncorrected hypermetrope and an uncorrected myope each accommodate the same amount, they are not all focused for the same distance. But this is also true, though to a less extent, for the corrected hyperme- copyright. trope and the corrected myope. The prevalent idea that the cor- rected hypermetrope and the corrected myope accommodate 10 D. for one metre, 20 D. for 1/2 mm. and so on is not correct. For example, the natural emmetrope accommodating 3 0 D. is focused for 333 mm. from the eye. But the 2 0 D. corrected hyper- metrope and the 2-0 D. corrected myope when accommodating http://bjo.bmj.com/ 3 0- dioptres are focused for 360 mm.
    [Show full text]
  • Blue Light and Digital Eye Strain Educating Patients and Providing Solutions
    Blue Light and Digital Eye Strain Educating Patients and Providing Solutions Anne-Marie Lahr, OD Dangers of Blue Light Dangers of blue light Ocular discomfort Interruption of sleep patterns and circadian rhythms Link between blue light exposure and macular degeneration Increased prevalence of blue light Solutions for Protection What Is Blue Light? Visible Light Spectrum 390 nm to 750 nm Blue Light 380 nm – 500 nm High Energy Visible HEV Blue Light is All Around Us The Tablet Revolution The Tablet Revolution April 2010: First iPad released A family portable computer Held at 12-24 inched from eyes Backlit display Moving into schools Outselling computers Same apps as the Smartphones Easier to read on than iPhone 35% of Americans own a tablet Digital Usage The Age of Digital Devices Typical Viewing Distances for New Media Devices 2 to 4 ft As the day 12 to 24 in progresses..we actually move closer to the back lit devices because our focusing system begins to 'lock-up'...bringing 12 to 18 in the device closer in order to keep the muscle in focus..... In turn, adding even more stress! Effects of Chromatic Aberration When light from a small white object is refracted by a prism, it is dispersed into its monochromatic constituents, the blue wavelengths being deviated more than the red To an eye viewing through the prism, the image of the object appears fringed with blue on the apex side of the prism Images: Nikon Courtesy of Mark Mattison-Shupnick Our Eyes and Digital Devices Our eyes can properly focus on images and print on back-lit digital devices.
    [Show full text]
  • Asmofilcon a (40% Water) for 2 Week Or 1 Month Replacement Contact Lens
    en Instructions for Use: asmofilcon A (40% water) for 2 week or 1 month replacement contact lens Important • Read the following instructions carefully before use and keep this document in a safe place for future reference. • Always follow the instructions in this document and those of your eye care professional or practitioner for appropriate use of contact lenses and lens care products including lens cases. FoR 2 week ReplAcement contAct lens Introduction asmofilcon A (40% water) is a blue tinted soft silicone hydrogel contact lens with 40% water content. The sterile asmofilcon A (40% water) is individually packaged in a foil-sealed plastic container and immersed in buffered saline solution. Indications asmofilcon A (40% water) is intended for daily or up to 7 days extended wear and correction of refractive ametropia (myopia, hyperopia and/or astigmatism) in non-aphakic disease-free eyes. wearing restrictions Clean and disinfect the contact lenses after lens removal using the cleaning and disinfecting regimen recommended by your eye care professional or practitioner. Replace the contact lenses every 2 weeks with fresh lenses. Be sure to consult your eye care professional or practitioner for the lens wearing schedule based on your individual needs. Always dispose of the contact lenses after the instructed wearing period. Wearing the contact lenses beyond the instructed wearing period increases the risk of eye problems. FoR 1 month ReplAcement contAct lens Introduction asmofilcon A (40% water) is a blue or lavender tinted soft silicone hydrogel contact lens with 40% water content. The sterile asmofilcon A (40% water) is individually packaged in a foil-sealed plastic container and immersed in buffered saline solution.
    [Show full text]
  • Essential Contact Lens Practice
    Contact Lens Monthly CET Essential contact lens practice Part 8 — Managing the presbyope Practitioners can expect a rise in presbyopic patients attending for contact lens fitting over the next few years. Jane Veys, John Meyler and Ian Davies continue their series by outlining the options and techniques available to correct presbyopia with contact lenses. C7603, three contact lens points suitable for optometrists, DOs and CLOs s the number of patients the same category as the presbyopic KEY POINTS wearing contact lenses emmetrope. The advantage of this around the world grows, technique is that the contact lens correc- ● The number of presbyopic patients so does the number requir- tion requires no modifications which, requiring contact lens correction is ing presbyopic correction. assuming that it is optimum at the time increasing and is predicted to continue AMany patients fitted with lenses are now of fitting, remains the case. to do so over the next five years ● In fitting the presbyope, the beginning to experience presbyopia and The obvious disadvantage is, of course, practitioner should have access to demand satisfactory correction without that the principal reason for contact lens a number of different lens designs recourse to spectacles. wear is being ignored. Contact lens and be aware of alternative fitting There is also the demand from presby- patients do not want to wear spectacles, approaches opic hyperopes who, on reaching presby- because, if they did, they would be doing ● The availability of single use opia, now need full-time correction for so already. Consequently pure contact disposable trial lenses allows distance and near and, with more active lens options should be explained first ease of trial for both patients and lifestyles and increased awareness of to the presbyopic contact lens wearers practitioners contact lenses, are asking for contact followed by spectacle correction option ● Lens power adjustments should lens correction.
    [Show full text]