Clinical Trials Logo

Clinical Trial Summary

Vision testing is a fundamental part of every optometry and ophthalmology assessment. Traditional vision testing charts are not able to measure vision below a certain level. Vision in this range is classified as counting fingers (CF), hand movements (HM) and light perception (LP). These measures are not very accurate or easily quantifiable. They are also poorly understood in terms of impact on quality of life. This study aims to assess new methods for measuring the vision of patients with very low vision.


Clinical Trial Description

Assessing very low vision accurately is becoming increasingly important with the increase in research in this area, such as using retinal implants to restore vision. Without being able to accurately measure the change in vision before and after treatment, it is not possible to fully assess the effect of treatment.

The Freiburg Vision Test (FrACT) is a computer based test developed to assess patients down to the LP level. It has been used in research in recent years. The FrACT is suitable for research but is not suitable for a clinical setting. The Berkeley Rudimentary Vision Test (BRVT) works on a similar principal as the FrACT but consists of hand held cards shown to the patient. Little work has been completed on how well the BRVT test works. Results from FrACT and BRVT will be compared in a group of patients with very low vision. This is important to establish how easily research results can be applied to a clinical setting.

Patients will also be asked to complete a daily living survey to better understand the impact of such poor vision on the ability to carry out day to day tasks. This understanding will help guide low vision services for patients as well as help direct low vision research to achieve a useful level of functional vision. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01876147
Study type Observational
Source University of Oxford
Contact
Status Completed
Phase
Start date August 2013
Completion date March 2016

See also
  Status Clinical Trial Phase
Recruiting NCT05984927 - NG101 AAV Gene Therapy in Subjects With Wet Age-Related Macular Degeneration Phase 1/Phase 2
Active, not recruiting NCT05536297 - Avacincaptad Pegol Open-Label Extension for Patients With Geographic Atrophy Phase 3
Recruiting NCT04101604 - Biomarkers of Common Eye Diseases
Completed NCT04005352 - Study to Assess the Efficacy and Safety of Brolucizumab 6mg Compared to Aflibercept 2 mg in a Treat-to-control Regimen (TALON) Phase 3
Withdrawn NCT02873351 - A Safety and Efficacy Study of Carbidopa-levodopa in Patients With Macular Degeneration Phase 2
Active, not recruiting NCT02802657 - Efficacy and Safety of "Treat-and-Extend" Regimen Versus "Pro Re Nata" of Conbercept in Age-related Macular Degeneration Phase 4
Not yet recruiting NCT02864472 - Comparison of PDT Combination With Ranibizumab vs. Ranibizumab Monotherapy in Persistent PCV With Initial Loading Dose Phase 4
Recruiting NCT01521065 - An Open-label Study to Evaluate the Clinical and Economic Benefits of I-Ray in Patients With Choroidal Neovascularization Secondary to Age-related Macular Degeneration Phase 2
Completed NCT02035722 - Intravitreal Injections-related Anxiety Phase 2/Phase 3
Completed NCT01445548 - Sirolimus for Advanced Age-Related Macular Degeneration Phase 1/Phase 2
Completed NCT01175395 - 20089 TA+Lucentis Combo Intravitreal Injections for Treatment of Neovascular Age-related Macular Degeneration (AMD) Phase 1/Phase 2
Recruiting NCT01048476 - Effects of Lutein and Zeaxanthin Supplementation on Age-related Macular Degeneration Phase 1/Phase 2
Active, not recruiting NCT01174407 - Implication of CD35, CD21 and CD55 in Exudative Age-related Macular Degeneration N/A
Terminated NCT00712491 - Phase 1/2 Study of an Ocular Sirolimus (Rapamycin) Formulation in Patients With Age-Related Macular Degeneration Phase 1/Phase 2
Completed NCT00345176 - Age-Related Eye Disease Study 2 (AREDS2) Phase 3
Completed NCT02140151 - Prophylactic Ranibizumab for Exudative Age-related Macular Degeneration Phase 1/Phase 2
Completed NCT02555306 - A Phase I/II Safety, Tolerability, Immunogenicity, and Bioactivity Study of DE-122 Injectable Solution for Refractory Exudative Age-related Macular Degeneration Phase 1/Phase 2
Recruiting NCT04796545 - Post-market Clinical Investigation of the SING IMT System, Model NG SI IMT 3X in Patients With End-stage Age-related Macular Degeneration N/A
Completed NCT03166202 - Age-Related Macular Degeneration, Scotopic Dysfunction, and Driving Performance in a Simulator
Completed NCT01397409 - Evaluation of AGN-150998 in Exudative Age-related Macular Degeneration (AMD) Phase 2