View clinical trials related to Amblyopia.
Filter by:Amblyopia is the most prevalent cause of reduced monocular visual acuity in children and young adults, with estimates of prevalence ranging from 1% to 5%. The most common associated amblyogenic risk factors are uncorrected anisometropia, strabismus, or a combination of these. In addition to reduced visual acuity, amblyopic patients may also have measurable dysfunction of accommodation, fixation, binocularity, vergence, reading fluency, depth perception, and contrast sensitivity. For the first time since the incorporation of atropine penalization into amblyopia management, physicians can now offer Luminopia, an FDA-approved dual action dichoptic treatment, to patients with amblyopia. Since the product became commercially available in November 2022, the number of patients on Luminopia therapy continues to grow. This presents a unique opportunity to gather real world evidence from a large number of patients, representative of how ophthalmologists and optometrists are applying this novel treatment in the real world. A registry of the clinical data associated with Luminopia treatment, with IRB oversight, will provide answers to key scientific questions using a large dataset.
Comparison of live remote paediatric digital vision testing outcomes versus face to face appointments in orthoptic clinic
In children 4 to 7 years of age, to determine if treatment with 1 hour per day 6 days per week of watching dichoptic movies/shows wearing the Luminopia headset is non-inferior to treatment with 2 hours of patching per day 7 days per week with respect to change in amblyopic eye distance VA from randomization to 26 weeks.
A gamification product was developed to guide children with amblyopia to develop rehabilitation training habits by combining cognitive evaluation theory and occlusion therapy. A randomized controlled trial was conducted to examine the ease of use, acceptability and treatment compliance of the game.
The research project titled "The Impact of Immersive Virtual Reality Training on Adult: Motion Sickness, and Ocular Surface: A Pilot Study" aimed to evaluate the initial safety impact of head-mounted virtual reality (HMVR) devices with virtual reality amblyopia training games on postural stability, motion sickness, and ocular surface in healthy adult participants. 38 adults (76 eyes) with normal corrected vision and stereo vision were recruited. All subjects used HMVR device for two consecutive training sessions (30 minutes each, 10 minutes intervals). Before training, after the first training and the second training, recorded the results including best corrected visual acuity (BCVA), ocular position, stereo vision, postural stability, non-invasive tear breakup time (NITBUT), tear meniscus height (TMH), red eye analysis, lipid layer classification (TFLL), eye blink frequency, eye surface temperature, simulator sickness questionnaire (SSQ) score, ocular surface disease index (OSDI) dry eye questionnaire score, visual quality questionnaire score and visual fatigue questionnaire score.
Anisometropic amblyopia is when one eye has a much stronger glasses prescription than the other, causing poor vision in one eye, even with glasses, because the brain favours the better-seeing eye. With standard care treatment (glasses plus either patching or atropine drops given to the better seeing eye), 35% of children with anisometropic amblyopia do not have any significant visual improvements, and will have reduced vision in one eye for life. There is no consensus for the reasons why some children do not respond as well as others. Recent research using the Plusoptix PowerRefractor (PR3), which quickly measures eye focusing (accommodation), suggested that in children with anisometropic amblyopia, the focusing of the amblyopic eye might influence treatment success. However, such measurements weren't previously common due to equipment limitations in clinics. The investigators aim to use the non-invasive PR3 to assess accommodation in hypermetropic anisometropic amblyopia, at the University of Sheffield. This will be a two-phase study of children aged 4-10 years who have hypermetropic anisometropia. The investigators will recruit participants attending the Ophthalmology Department at Sheffield Children's NHS Foundation Trust (SCH). The investigators will take repeated measurements of accommodation at points during standard care treatment (phase 1) and conduct a pilot intervention study (phase 2) to determine whether adjusting glasses prescriptions based on accommodation responses with amblyopia treatment can improve vision in the weaker eye. The goal is to gather evidence to inform a future larger multicentre RCT to improve the visual outcomes for anisometropic amblyopic children in the future.
Clinical vision measurements usually involve printed charts with an eye care professional interpreting patient responses to generate a score. Those scores determine the need for or outcome of treatment. Detecting change can be improved with strict procedures/scoring, lending itself to computerisation. This in turn allows integration with electronic medical records. Many eye tests could be computerised in this way. At Guys and St Thomas' NHS Foundation Trust, the investigators have developed and validated a computerised test of distance visual acuity, called COMPlog which is now in widespread use. The investigators now want to increase the range of tests available. There is also a need to longitudinally monitor for adverse change. Such monitoring must be developed to keep false positive and false negative change detection to a minimum. The aims of this two year linked program are to: Part A) validate an extended range of computerised vision measurement tests against their gold standard hard copy printed equivalents. Some of these tests are designed for use in children and all are meant to quantify both normal and impaired vision. Patients of all ages and visual function will therefore be recruited from St Thomas' Hospital. The specific tests we aim to validate are logMAR Letter Near Acuity, Word Near Acuity, Letter Contrast Sensitivity, Auckland Optotypes Picture Acuity, Low Contrast Letter Acuity, Stereoacuity and Vanishing Optotypes. Patients will undergo test-retest measurements with up to two of these. Part B) Iteratively develop an application for use in home monitoring of subjects at risk of treatable vision loss due to age related macular degeneration. All computerised tests in parts A and B will be performed on prototype software. Eye patients will be recruited as subjects. Patients recruited to part A will undergo tests on one day for up to an hour, subjects in part B will participate for between 1 hour and two months.
Patients with visual acuity and ocular characteristics outside the Novasight FDA multi-center study are to perform the same Curesight procedures- including M&S EVA or eETDRS patched acuity, stereo and then utilize the Curesight device 1.5 hours per day, 6 days per week over 3-6 months to determine treatment efficacy. An Eye-Tracking-Based Dichoptic Home Treatment for Amblyopia: A Multicenter Randomized Clinical Trial T. Wygnanski-Jaffe, B. J. Kushner, A. Moshkovitz, M. Belkin, O. Yehezkel and G. CureSight Pivotal Trial Ophthalmology 2023 Vol. 130 Issue 3 Pages 274-285
Interest in developing alternative methods for the treatment of amblyopia (lazy eye) has long been a topic of interest among clinicians and researchers. Occlusion or penalization of fellow eye do not always provide the desired visual acuity improvement. Moreover, occlusion is associated with a high risk of recurrence and non-compliance. Here, it is presented a protocol of a randomized clinical trial to evaluate the safety and clinical efficacy of a novel home-based system, based on a computer game. The goal of this prospective clinical trial is to compare in visual acuity improvements in patients with amblyopia, following conventional patching therapy or this novel computer-based therapy. The main questions it aims to answer are: - Does computer-based therapy equal or improve patching therapy? Can it be used as an alternative to patching? - Does computer-based therapy used in combination with pathching solve amblyopia when patching fails alone (persistent amblyopia)? Participants will be divided in two groups according to the previous occlusion o penalization of fellow eye. Both groups will be divided in two subgroups, experimental and control. Researchers will compare subgroups outcomes in order to asses this novel approach.
The goal of this diagnostic test is to compare the results of refraction and amblyopia risks between using 2WIN-S portable refractor and cycloplegic refraction in pre-school age. All participants will be tested by 2WIN-S portable refractor.