Presbyopia, Anisometropia, and Unilateral Amblyopia
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Pediatric Anisometropia: Case Series and Review
Pediatric Anisometropia: tacles, vision therapy, and occlusion. Case two Case Series and Review is anisometropia caused by organic vision loss from optic neuritis early in life. Case three is John D. Tassinari OD, FAAO, FCOVD an infant with hyperopic anisometropia and Diplomate Binocular Vision esotropia. The esotropia did not respond to Perception and Pediatric Optometry, spectacles and home based vision therapy. American Academy of Optometry Neonatal high bilateral hyperopia that Associate Professor Western converted to anisometropia because of early University of Health Sciences onset cosmetically invisible unilateral esotropia College of Optometry is speculated. Case four describes a boy Pomona, California diagnosed with hyperopic anisometropia at age 11 months coincident with a diagnosis of pseudoesotropia. His compliance with ARTICLE prescribed spectacles was spotty until age three years. An outstanding visual outcome ABSTRACT was achieved by age five years with spectacles Background only (no occlusion therapy). Case five concerns The etiology and natural course and history a boy who acquired hyperopic anisometropia of pediatric anisometropia are incompletely because one eye experienced increasing understood. This article reviews the literature hyperopia during his toddler years. His regarding pediatric anisometropia with much response to treatment, spectacles and part of the review integrated into a case series. time occlusion with home vision therapy, was The review and case reports are intended to outstanding. Case six is an infant diagnosed elevate clinical understanding of pediatric with 2.50 diopters of hyperopic anisometropia anisometropia including and especially at age six months. Monocular home based treatment outcomes. vison developmental activities, not glasses, were prescribed. Her anisometropia vanished Case Reports three months later. -
WSPOS Worldwide Webinar 16: Amblyopia - How and When
Answers to Audience Questions - WSPOS Worldwide Webinar 16: Amblyopia - How and When WWW 16 Panellists Anna Horwood Celeste Mansilla David Granet Krista Kelly Lionel Kowal Susan Cotter Yair Morad Anna Horwood (AH), Celeste Mansilla (CM), Krista Kelly (KK), Lionel Kowal (LK), Susan Cotter (SC), Yair Morad (YM) 1. How do you maintain attained iso visual acuity after successful amblyopia treatment? AH: Intermittent monitoring. If they have regressed previously, I might carry on very intermittent occlusion (an hour or two a week) until I was sure it was stable. CM: With gradual and controlled reduction of the treatment, for example: if the patient had 1 hour of patch per day, I leave it with 1 hour 3 times a week during a month. I do a check and if the visual acuity was maintained, I lower patches to 2 times a week. I keep checking and going down like this until I suspend the treatment. If at any time I detect worsening visual acuity, I return to the previous treatment. SC: Best way is attainment of normal binocular vision. I do not worry about ansiometropic amblyopes who have random dot stereopsis post-treatment. If have constant unilateral strabismus, I can do some limited part-time patching, decreasing patching dosage over time given no regression of VA. YM: repeat examination every 6 months. If I see regression, I will prescribe patching for 30 min a day. 2. How do you plan for very dense amblyopes? AH: I very rarely see them because, with screening, they are picked up early and usually do well. -
Strabismus, Amblyopia & Leukocoria
Strabismus, Amblyopia & Leukocoria [ Color index: Important | Notes: F1, F2 | Extra ] EDITING FILE Objectives: ➢ Not given. Done by: Jwaher Alharbi, Farrah Mendoza. Revised by: Rawan Aldhuwayhi Resources: Slides + Notes + 434 team. NOTE: F1& F2 doctors are different, the doctor who gave F2 said she is in the exam committee so focus on her notes Amblyopia ● Definition Decrease in visual acuity of one eye without the presence of an organic cause that explains that decrease in visual acuity. He never complaints of anything and his family never noticed any abnormalities ● Incidence The most common cause of visual loss under 20 years of life (2-4% of the general population) ● How? Cortical ignorance of one eye. This will end up having a lazy eye ● binocular vision It is achieved by the use of the two eyes together so that separate and slightly dissimilar images arising in each eye are appreciated as a single image by the process of fusion. It’s importance 1. Stereopsis 2. Larger field If there is no coordination between the two eyes the person will have double vision and confusion so as a compensatory mechanism for double vision the brain will cause suppression. The visual pathway is a plastic system that continues to develop during childhood until around 6-9 years of age. During this time, the wiring between the retina and visual cortex is still developing. Any visual problem during this critical period, such as a refractive error or strabismus can mess up this developmental wiring, resulting in permanent visual loss that can't be fixed by any corrective means when they are older Why fusion may fail ? 1. -
Vision Services Professional Payment Policy Applies to the Following Carepartners of Connecticut Products
Vision Services Professional Payment Policy Applies to the following CarePartners of Connecticut products: ☒ CareAdvantage Premier ☒ CareAdvantage Prime ☒ CareAdvantage Preferred ☒ CarePartners Access The following payment policy applies to ophthalmologists who render professional vision services in an outpatient or office setting. In addition to the specific information contained in this policy, providers must adhere to the policy information outlined in the Professional Services and Facilities Payment Policy. Note: Audit and disclaimer information is located at the end of this document. POLICY CarePartners of Connecticut covers medically necessary vision services, in accordance with the member’s benefits. GENERAL BENEFIT INFORMATION Services and subsequent payment are pursuant to the member’s benefit plan document. Member eligibility and benefit specifics should be verified prior to initiating services by logging on to the secure Provider portal or by contacting CarePartners of Connecticut Provider Services at 888.341.1508. Services, including periodic follow-up eye exams, are considered “nonpreventive/nonroutine” for members with an eye disease such as glaucoma or a condition such as diabetes. Routine Eye Examinations and Optometry Medical Services CarePartners of Connecticut has arranged for administration of the vision benefit through EyeMed Vision Care. Ophthalmologists Ophthalmologists must be contracted with EyeMed Vision Care in order to provide routine eye services or dispense eyewear to CarePartners of Connecticut members. Ophthalmologists may provide nonroutine, medical eye services to members according to their CarePartners of Connecticut agreement. REFERRAL/PRIOR AUTHORIZATION/NOTIFICATION REQUIREMENTS Certain procedures, items and/or services may require referral and/or prior authorization. While you may not be the provider responsible for obtaining prior authorization, as a condition of payment you must confirm that prior authorization has been obtained. -
Amblyopia HANDOUT ACES
AMBLYOPIA CORNEA PUPIL CATARACT IRIS LENS RETINA MACULA OPTIC NERVE The eye on the right is at risk for all three types of AMBLYOPIA. Rays of light enter the normal eye on the left, are bent by the cornea and the lens and are focused one the most precise part of the retina called the macula. Light entering the right eye is disrupted by a congenital cataract (deprivational amblyopia). Since the right eye is shorter than the left, light doesn't focus on the retina due to unequal far-sightedness(refractive amblyopia). Since the left eye is crossed (esotropia-type strabismus), incoming light fails to align on the macula (strabismic amblyopia). ye doctors and orthoptists want each child to grow frequently suppresses or "turns off" the brain image from up with the healthiest visual system possible. the non-dominant eye. Strabismic amblyopia can be E This goal requires the close cooperation of treated by combinations of drops, glasses, patching parents, pediatricians, primary doctors, optometrists, and/or eye muscle surgery. school nurses and health aids and the professionals who DETECTION: Within the first days after birth, deal with visually impaired babies. part of each baby's first physical exam is the "red reflex" an abnormality of which could indicate cataract or tumor. At birth, a normal infant has relatively poor vision in the range A part of routine pre-school pediatric check-ups is of 20/2000! Under normal conditions, the visual system improves so that observations of red reflex by photoscreen and Brückner 20/20 vision might be attained by school age and retained after age 10 years. -
Clinical Findings and Management of Posterior Vitreous Detachment
American Academy of Optometry: Case Report 5 Clinical Findings and Management of Posterior Vitreous Detachment Candidate’s Name, O.D. Candidate’s Address Candidate’s Phone number Candidate’s email Abstract: A posterior vitreous detachment is a degenerative process associated with aging that affects the vitreous when the posterior vitreous cortex separates from the internal limiting membrane of the retina. The composition of the vitreous gel can degenerate two collective ways, including synchysis or liquefaction, and syneresis or shrinking. Commonly, this process of separation occurs with the posterior hyaloid resulting in a Weiss ring overlying the optic nerve. Complications of a posterior vitreous detachment may include retinal breaks or detachments, retinal or vitreous hemorrhages, or vitreomacular traction. This case presentation summarizes the etiology of this ocular condition as well as treatment and management approaches. Key Words: Posterior Vitreous Detachment, Weiss Ring, Vitreous Degeneration, Scleral Depression, Nd:YAG Laser 1 Introduction The vitreous humor encompasses the posterior segment of the eye and fills approximately three quarters of the ocular space.1 The vitreous is a transparent, hydrophilic, “gel-like” substance that is described as a dilute solution of collagen, and hyaluronic acid.2,3,4 It is composed of 98% to 99.7% water.4 As the eye matures, changes may occur regarding the structure and composition of the vitreous. The vitreous functions to provide support to the retina against the choroid, to store nutrients and metabolites for the retina and lens, to protect the retinal tissue by acting as a “shock absorber,” to transmit and refract light, and to help regulate eye growth during fetal development.3,4 Case Report Initial Visit (03/23/2018) A 59-year-old Asian female presented as a new patient for examination with a complaint of a new onset of floaters and flashes of light in her right eye. -
Refractive Errors a Closer Look
2011-2012 refractive errors a closer look WHAT ARE REFRACTIVE ERRORS? WHAT ARE THE DIFFERENT TYPES OF REFRACTIVE ERRORS? In order for our eyes to be able to see, light rays must be bent or refracted by the cornea and the lens MYOPIA (NEARSIGHTEDNESS) so they can focus on the retina, the layer of light- sensitive cells lining the back of the eye. A myopic eye is longer than normal or has a cornea that is too steep. As a result, light rays focus in front of The retina receives the picture formed by these light the retina instead of on it. Close objects look clear but rays and sends the image to the brain through the distant objects appear blurred. optic nerve. Myopia is inherited and is often discovered in children A refractive error means that due to its shape, your when they are between ages eight and 12 years old. eye doesn’t refract the light properly, so the image you During the teenage years, when the body grows see is blurred. Although refractive errors are called rapidly, myopia may become worse. Between the eye disorders, they are not diseases. ages of 20 and 40, there is usually little change. If the myopia is mild, it is called low myopia. Severe myopia is known as high myopia. Lens Retina Cornea Lens Retina Cornea Light rays Light is focused onto the retina Light rays Light is focused In a normal eye, the cornea and lens focus light rays on in front of the retina the retina. In myopia, the eye is too long or the cornea is too steep. -
Association of British Dispensing Opticians Heads You Win, Tails
Agenda Heads You Win, Tails You Lose • The correction of ametropia • Magnification, retinal image size, visual Association of British The Optical Advantages and acuity Disadvantages of Spectacle Dispensing Opticians • Field of view Lenses and Contact lenses • Accommodation and convergence 2014 Conference Andrew Keirl • Binocular vision and anisometropia Kenilworth Optometrist and Dispensing Optician • Presbyopia. 1 2 3 Spectacle lenses Contact lenses Introduction • Refractive errors that can be corrected • Refractive errors that can be corrected using • Patients often change from a spectacle to a using spectacle lenses: contact lenses: contact lens correction and vice versa – myopia – myopia • Both modes of correction are usually effective – hypermetropia in producing in-focus retinal images – hypermetropia • apparent size of the eyes and surround in both cases • There are of course some differences – astigmatism – astigmatism between modes, most of which are • not so good with irregular corneas • better for irregular corneas associated with the position of the correction. – presbyopia – presbyopia • Some binocular vision problems are • Binocular vision problems are difficult to manage using contact lenses. easily managed using spectacle lenses. 4 5 6 The correction of ametropia using Effectivity contact lenses • A distance correction will form an image • Hydrogel contact lenses at the far point of the eye – when a hydrogel contact lens is fitted to an eye, The Correction of Ametropia the lens “drapes” to fit the cornea • Due to the vertex distance this far point – this implies that the tear lens formed between the will lie at slightly different distances from contact lens and the cornea should have zero the two types of correcting lens power and the ametropia is corrected by the BVP of the contact lens – the powers of the spectacle lens and the – not always the case but usually assumed in contact lens required to correct a particular practice eye will therefore be different. -
Strabismus: a Decision Making Approach
Strabismus A Decision Making Approach Gunter K. von Noorden, M.D. Eugene M. Helveston, M.D. Strabismus: A Decision Making Approach Gunter K. von Noorden, M.D. Emeritus Professor of Ophthalmology and Pediatrics Baylor College of Medicine Houston, Texas Eugene M. Helveston, M.D. Emeritus Professor of Ophthalmology Indiana University School of Medicine Indianapolis, Indiana Published originally in English under the title: Strabismus: A Decision Making Approach. By Gunter K. von Noorden and Eugene M. Helveston Published in 1994 by Mosby-Year Book, Inc., St. Louis, MO Copyright held by Gunter K. von Noorden and Eugene M. Helveston All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from the authors. Copyright © 2010 Table of Contents Foreword Preface 1.01 Equipment for Examination of the Patient with Strabismus 1.02 History 1.03 Inspection of Patient 1.04 Sequence of Motility Examination 1.05 Does This Baby See? 1.06 Visual Acuity – Methods of Examination 1.07 Visual Acuity Testing in Infants 1.08 Primary versus Secondary Deviation 1.09 Evaluation of Monocular Movements – Ductions 1.10 Evaluation of Binocular Movements – Versions 1.11 Unilaterally Reduced Vision Associated with Orthotropia 1.12 Unilateral Decrease of Visual Acuity Associated with Heterotropia 1.13 Decentered Corneal Light Reflex 1.14 Strabismus – Generic Classification 1.15 Is Latent Strabismus -
Perspectives on Presbyopia
PERSPECTIVES ON PRESBYOPIA EXTRA CONTENT FOUR PATIENTS AVAILABLE FIVE EXPERTS BY MARY WADE, CONTRIBUTING WRITER ew presbyopia treatments, such as the corneal inlays Kamra and Raindrop, are slowly wending their way through the U.S. Food and Drug Administration approval process. Entirely new approaches to intraocular lenses (IOLs) are in development internationally. Meanwhile,N patients arrive in your office daily, seeking better vision without reading glasses. What are the best treatments to offer them right now? EyeNet asked five leading refractive surgeons to review four hypothetical patients with pres- byopia or pre-presbyopia. The differing recommendations made by these clinicians illustrate the range of valid approaches. The surgeons emphasize that, in all cases, it’s critical to conduct a thorough assessment, talk with patients about their vision priorities, discuss the pros and cons of various approaches, and mention the option of “watchful waiting”—that is, forgoing treatment for the time being. When patients are considering corrective surgery, one of the surgeon’s most important tasks is to help them form realistic expectations regarding visual outcomes and possible complications. (See “Counseling Caveats.”) For those patients who choose to pursue vision correction surgery, the perspectives presented by these refractive experts can help to guide treatment choices with today’s technologies. BONNIE A. HENDERSON, MD KEVIN M. MILLER, MD J. BRADLEY RANDLEMAN, MD STEVEN I. ROSENFELD, MD, FACS SONIA H. YOO, MD ALFRED T. KAMAJIAN T. ALFRED eyenet 37 eventually need cataract surgery, prior refractive surgery may make accurate refraction difficult and constrain lens choices. It makes sense to leave the corneas pristine in older patients. -
Human Amblyopia
Human Amblyopia • “Lazy Eye” • Relatively common developmental visual disorder (~2%) • Reduced visual acuity in an otherwise healthy and properly corrected eye • Associated with interruption of normal early visual experience • Most common cause of vision loss in children • Well characterized behaviorally, not neurologically • Treated by patching in children Visual Deficits in Amblyopia • Reduced monoc. visual acuity - defining feature – Usually 20/30 - 20/60 • Impaired contrast sensitivity – Prominent at high spatial frequencies Contrast Sensitivity Sensitivity Contrast – Central visual field is generally most affected Spatial Frequency • Moderate deficits in object segmentation/recognition and spatial localization • Severe deficits in binocular interactions Subtypes of Amblyopia • Anisometropic – Unequal refractive error between the two eyes • Strabismic – Deviated eye that may or may not have unbalanced refraction • Deprivation – Congenital cataract; corneal opacity; eyelid masses Mechanisms of Amblyopia 1. Form deprivation . Sharp image is not formed at the retina 2. Abnormal binocular vision . Binocularity is often changed or lost in amblyopia Models of Amblyopia • Competition hypothesis originated with experiments in kittens in the 1960s by Hubel and Wiesel • Monocular deprivation of retinal input during ‘critical’ developmental periods leads to striking abnormalities in the physiology of visual cortical neurons • Binocular deprivation actually leads to less severe abnormalities • Amblyopia may be a form of activity-dependent deprivation, -
Review of the Impact of Presbyopia on Quality of Life in the Developing and Developed World
Acta Ophthalmologica 2014 Review Article Review of the impact of presbyopia on quality of life in the developing and developed world Ariana D. Goertz,1 William C. Stewart,2 William R. Burns,3 Jeanette A. Stewart2 and Lindsay A. Nelson2 1University of Nevada, Las Vegas, Nevada, USA 2PRN Pharmaceutical Research Network, LLC, Cheyenne, Wyoming, USA 3Encore Vision, Inc., Fort Worth, Texas, USA ABSTRACT. (Barbero 2013). Everyone eventually Purpose: To examine the public health impact of presbyopia regarding its effect develops presbyopia but symptoms on quality of life (QoL) and society in both the developed and developing worlds. may vary. The major risk factor for Methods: A database was created from articles found on PubMed, the Cochrane presbyopia is age although the condi- Library and Science Direct using the following search terms: presbyopia, QoL, tion may be affected by other factors accommodation, impact, cost, prevention, treatment and public health. Articles including disease, trauma and medica- were accepted into the database if they addressed presbyopia and public health. tions (American Optometric Associa- Results: This study showed in the developed world presbyopic subjects treated tion 2010). with reading glasses suffered a reduction in QoL parameters compared with Presbyopia is classically believed to those who were younger and emmetropic. A small minority of subjects were result from hardening of the lens although other causes have been assessed to be a candidate for additional non-spectacle treatment measures. In described as well such as changes in undeveloped areas, the manifestations of presbyopia were similar to the tissue elasticity and the ciliary body developed world in symptoms, age and reduced QoL.