Active vision therapy for pseudophakic amblyopia

1997 ◽  
Vol 23 (7) ◽  
pp. 1089-1094 ◽  
Author(s):  
Arun Verma ◽  
Daljit Singh
Keyword(s):  
Active Vision ◽  
Vision Therapy

scholarly journals Stimuli Characteristics and Psychophysical Requirements for Visual Training in Amblyopia: A Narrative Review

2020 ◽  
Vol 9 (12) ◽  
pp. 3985
Author(s):  
Carlos J. Hernández-Rodríguez ◽  
David P. Piñero ◽  
Ainhoa Molina-Martín ◽  
León Morales-Quezada ◽  
Dolores de Fez ◽  
...  
Keyword(s):  
Perceptual Learning ◽  
Therapeutic Process ◽  
Active Vision ◽  
Neural Mechanisms ◽  
Psychophysical Method ◽  
Visual Training ◽  
Visual Deficits ◽  
Effective Option ◽  
Visual Acuity Loss ◽  
Vision Therapy

Active vision therapy using perceptual learning and/or dichoptic or binocular environments has shown its potential effectiveness in amblyopia, but some doubts remain about the type of stimuli and the mode and sequence of presentation that should be used. A search was performed in PubMed, obtaining 143 articles with information related to the stimuli used in amblyopia rehabilitation, as well as to the neural mechanisms implied in such therapeutic process. Visual deficits in amblyopia and their neural mechanisms associated are revised, including visual acuity loss, contrast sensitivity reduction and stereopsis impairment. Likewise, the most appropriate stimuli according to the literature that should be used for an efficient rehabilitation of the amblyopic eye are described in detail, including optotypes, Gabor’s patches, random-dot stimuli and Vernier’s stimuli. Finally, the properties of these stimuli that can be modified during the visual training are discussed, as well as the psychophysical method of their presentation and the type of environment used (perceptual learning, dichoptic stimulation or virtual reality). Vision therapy using all these revised concepts can be an effective option for treating amblyopia or accelerating the treatment period when combining with patching. It is essential to adapt the stimuli to the patient’s individual features in both monocular and binocular training.

Management of Anisometropic Amblyopia: A Case Report and Brief Review

2019 ◽  
pp. 100-112
Keyword(s):  
Case Report ◽  
Vision Loss ◽  
Contact Lenses ◽  
Management Strategies ◽  
Active Vision ◽  
Clinical Findings ◽  
Anisometropic Amblyopia ◽  
Soft Contact Lenses ◽  
Occlusion Therapy ◽  
Vision Therapy

Background Unilateral functional amblyopia due to anisometropia is a common cause of vision loss in children. There has been a significant amount of research recently to determine the most effective management strategies for such cases, and it is important for clinicians to determine how to apply these findings clinically. Case Report A 6-year-old female presented for her first comprehensive eye exam after failing a school vision screening. She was diagnosed with significant anisometropia with anisometropic amblyopia in her left eye. She was treated with spectacle correction initially, and was eventuallyfit with soft contact lenses to achieve optimal vision and binocularity. Part-time occlusion therapy was also initiated, which was modified throughout the treatment period based on clinical findings. She was also treated with 19 sessions of office-based vision therapy in order to maximize the success of amblyopia treatment. At the completion of the treatment, this patient showed significant improvement in her visual acuity and other non-acuity factors, including contrast sensitivity and binocularity. Conclusions The successful treatment of this patient with anisometropic amblyopia was achieved by the combination of active vision therapy with evidence-based management strategies, consisting of optical correction and occlusion therapy

scholarly journals Visual Acuity Improvement in Adult Anisometropic Amblyopes After Active Vision Therapy

2020 ◽  
Vol Volume 12 ◽  
pp. 183-187
Author(s):  
Leila Sharbatoghli ◽  
Hassan Hashemi ◽  
Alireza Mohamadi ◽  
Ebrahim Jafarzadehpur ◽  
Abbasali Yekta ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Active Vision ◽  
Vision Therapy

scholarly journals Active Vision Therapy for Anisometropic Amblyopia in Children: A Systematic Review

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Carlos J. Hernández-Rodríguez ◽  
David P. Piñero
Keyword(s):  
Clinical Trials ◽  
Randomized Clinical Trials ◽  
Scientific Evidence ◽  
Active Vision ◽  
Risk Of Bias ◽  
Randomized Control Trials ◽  
Double Blind ◽  
Anisometropic Amblyopia ◽  
Randomized Control ◽  
Vision Therapy

Purpose. The aim of the study was evaluation of the scientific evidence about the efficacy of vision therapy in children and teenagers with anisometropic amblyopia by performing a systematic literature review. Methods. A search was performed using 3 searching strategies in 4 different databases (PubMed, Web of Science, Scopus, and PruQuest). The quality of the included articles was evaluated using two tools for the risk of bias assessment, ROBINS-I for nonrandomized studies of intervention (NRSI), and ROB 2.0 for randomized clinical trials. Results. The search showed 1274 references, but only 8 of them passed the inclusion criteria after the complete text review. The articles that were finally included comprised 2 randomized control trials and 6 nonrandomized studies of intervention. These articles provided evidence supporting the efficacy of vision therapy for the treatment of anisometropic amblyopia in children and teenagers. Assessment of the risk of bias showed an appropriate risk of bias for the randomized control trials, but a high risk of bias for nonrandomized studies of intervention (NRSI). A main source of risk of bias for NRSI was the domain related to the measurements of the outcomes, due to a lack of double-blind studies. Conclusion. Vision therapy is a promising option for the treatment of anisometropic amblyopia in children and teenagers. However, the level of scientific evidence provided by the studies revised is still limited, and further randomized clinical trials are necessary to confirm the results provided to date and to optimize the vision therapy techniques by knowing the specific neural mechanisms involved.

Pulfrich Effect for Vision Therapy

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Pellumb  Kllogjeri
Keyword(s):  
Pulfrich Effect ◽  
Vision Therapy

Persistent Diplopia in Visually Mature Patients. Is it Intractable or something else? A Review and Case Series

2017 ◽  
pp. 90-108
Keyword(s):  
Botulinum Toxin ◽  
Extraocular Muscle ◽  
Botulinum Toxin Injection ◽  
Case Series ◽  
Sensory Adaptation ◽  
Single Vision ◽  
Injection Treatment ◽  
Vision Therapy ◽  
Extraocular Muscle Surgery

Diplopia is described as being intractable when there is inability to both fuse the two images and suppress the second image. Intractable diplopia persists despite achieving ocular alignment using either prisms, lenses,vision therapy,extraocular muscle surgery, or botulinum toxin injection. Treatment usually resorts to occluding or fogging the patient’s nondominant eye. Often times, however, adults having other causative mechanisms for supposedly persistent diplopia are able to achieve comfortable single vision with treatment that either establishes fusion or reactivates a preexisting sensory adaptation. This case series reviews these other causes of diplopia.

Optometric Vision Therapy for Visual Deficits and Dysfunctions: A Suggested Model for Evidence-Based Practice

2015 ◽  
pp. 290-339
Keyword(s):  
Speech Therapy ◽  
Evidence Based Practice ◽  
Behavioural Therapy ◽  
Evidence Based ◽  
Neural Pathways ◽  
Central Processing ◽  
Visual Deficits ◽  
Visual Spatial ◽  
Functional Vision ◽  
Vision Therapy

Evidence from neural science supports a neuroplasticity thesis where the development and rehabilitation of functional neural pathways can be facilitated by management of biological factors, central processing and environmental interactions. Healthy eyes and clear sight are not themselves sufficient for efficient functional vision. How a person uses vision determines their operational skill. Efficient functional vision requires dynamic interactions between and within visual receptive and reflexive biology, acquired neural networks that serve basic visual inspection processes and visuo-cognitive operational patterns driving top down visual – spatial analysis and problem solving. This presentation is a review and discussion of evidence-based practice (EBP) principles that we utilise in clinical neuro-developmental and rehabilitative optometric vision therapy (OVT) for selected visual deficits and dysfunctions. OVT services, like other collaborative therapies such as cognitive behavioural therapy, speech therapy and occupational therapy, must progressively adapt to new knowledge and advancing technology through EBP. Clinical services directed at treatable neuro-developmental and acquired dynamic functional vision problems require the application of an emerging set of principles resulting from systematic logic and EBP related to the art and science of case analysis, practice management and OVT delivery.

Use of Remote Optometric Vision Therapy in a Primary Eye Care Practice

2020 ◽  
pp. 99-106
Keyword(s):  
Patient Selection ◽  
Parental Support ◽  
Care Practice ◽  
Eye Care ◽  
Technical Requirements ◽  
Online Platforms ◽  
Case Selection ◽  
Home Based ◽  
Vision Therapy ◽  
Office Procedures

Many optometrists supplement office-based vision therapy with home-based vision therapy procedures. Others prescribe primarily home-based vision therapy activities with in-office instruction. With recent development of telehealth online platforms, it is possible to enhance home-based vision therapy with one-on-one doctor-guided and vision therapist-guided remote optometric vision therapy (ROVT). This may increase access for times when the patient is not able to present to the office. Procedures for implementing ROVT are discussed including patient selection, case management, and technical requirements. 35 patients received ROVT, with the vast majority responding positively. Three cases of ROVT are presented. While there are significant limitations to ROVT, this experience shows that it is possible to conduct ROVT when there is need. We found that case selection and parental support at home are important factors for success.

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