Testing of contrast sensitivity Eye Diseases
Conditions
Interventions
Subjects will have their visual acuity measured using 4m logMAR visual acuity charts at contrast levels 1.25%, 2.5%, 5% ,10%, 25% and 100% and then use the SightSave contrast sensitivity app on a touc
Sponsors
ScottHealth Ltd
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Has visually significant cataract and listed for a cataract surgery with intraocular lens implant procedure 2. Patient consents to having contrast sensitivity testing on SightSave contrast sensitivity app and logMAR contrast sensitivity charts 3. Patient is able to use the logMAR charts and has capacity to read the letters
Exclusion criteria
Exclusion criteria: 1. Unable to use either or both, logMAR contrast sensitivity chart 2. Unable to read the chart letters
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| LogMAR visual acuity at contrast levels 1.25%, 2.5%, 5%,10%, 25% and 100% measured using 4m logMAR visual acuity charts and the SightSave contrast sensitivity app on a touchscreen device | — |
Secondary
| Measure | Time frame |
|---|---|
| At the end of the testing: 1. Time taken to complete each test 2. 5 point scale evaluation by the patient of the ease of testing for them | — |
Countries
England, United Kingdom
Outcome results
None listed