An interventional study of EyeTracker in Diabetic Maculopathy, Age Related Macular Degeneration and Glaucoma, sponsored by Prim. Prof. Dr. Oliver Findl, MBA. Status unknown at 1 site in Austria. Open to participants aged 21 Years to 105 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-02-27.
Sponsored by Prim. Prof. Dr. Oliver Findl, MBA · Not applicable, Interventional, and Diagnostic
Investigation of the reading parameters and fixation behavior in patients with different ocular diseases (age-related macular degeneration, glaucoma, diabetic maculopathy, epiretinal membrane) and healthy subjects. In addition, fixation analysis and retinal sensitivity measurements will be done with a microperimeter in each subject.
Reading is a complex function. It requires a proper retinal image that is received by the brain. There it is analyzed for letter and word recognition and then the semantics is detected. Reading speed slows down when letters are blurred, or do not have enough contrast or luminance or when binocular fusion is hampered. Hence, it is obvious that reading ability is reduced in patients with various ocular diseases. Especially, pathologies effecting the posterior pole (central and paracentral vision) might impair reading parameters significantly.
Recently, the Eyetracker Eyelink 1000 (SR Research Ltd, Canada) became available. It´s application was described previously. Briefly, a high-speed infrared camera detects the position of eye (pupil and corneal reflex) and in turn the direction of gaze 500 times per second. During the calibration process the position can be linked to the position on a screen where, for instance, a text or a fixation target can be projected. Direction of gaze is recorded during the reading process and the gathered data are analyzed.
Fixation ability was assessed using Eyelink 1000 in patients with age-related macular degeneration. It was shown that fixation is related to visual function. The worse eye showed reduced fixation ability which is improved during binocular fixation. This study investigates reading parameters in patients with various ocular diseases.
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This study's planned enrollment of 100 is above the median of 65 across 1,272 interventional studies indexed under Glaucoma.
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Exclusion Criteria:
Patients with glaucoma, AMD, diabetic maculopathy, epiretinal membranes, and healthy patients will undergo a reading analysis using the EyeTracker
Device: EyeTracker
Patients with various ophthalmologic diseases (ERM, glaucoma, AMD, diabetic retinopathy) will undergo reading analysis using the EyeTracker
Reading speed
Reading speed (words per minute) will be analysed using the EyeTracker device. The patient has to read 4 texts with different contrast levels. The faster the patient can read a text, the better the results.
Time frame: 12 months
Retinal perimetry
Analysis of retinal fixation will be done using microperimetry.
Time frame: 12 months
Plan to share: Undecided
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Prim. Prof. Dr. Oliver Findl, MBA