Evaluation of Objective Perimetry Using Pupillometer
Objective perimetry can better monitor visual field defects in RP and Glaucoma patients than conventional subjective perimetry.The PLR ( Pupil Light Reflex ) of the short and long wave ratio should be significantly higher in areas of visual field defects in RP and Glaucoma patients.
|Study Design:||Observational Model: Case Control
Time Perspective: Prospective
|Official Title:||Objective Perimetry in Normal Subjects,Glaucoma Patients and Retinitis Pigmentosa Patients .|
- PLR response amplitude and latency [ Time Frame: Not defined yet ] [ Designated as safety issue: No ]
|Study Start Date:||November 2009|
|Study Completion Date:||January 2013|
|Primary Completion Date:||January 2013 (Final data collection date for primary outcome measure)|
Glaucoma Patients with visual field defects
Retinitis Pigmentosa Patients with visual field defects
Pupil light reflex will be measured by a pupillometer in response to short and long wavelength light small spot stimulus in different area of the visual field. The PRL will be measured in four quadrant, central, 10, 20, and 30 degree from the visual axis.
Stimulus duration will be 1000 ms (1 sec), with intervals of 890 ms between stimuli. The stimuli size V with light intensity of 39.8 cd-s/m2 for both short wavelength stimuli (peak 485 nm) and long wavelength stimuli (peak 620nm).
Please refer to this study by its ClinicalTrials.gov identifier: NCT01021982
|Sheba Medical Center|
|Tel Hashomer, Israel, 52621|
|Principal Investigator:||Ygal Rotenstreich, MD||Sheba Medical Center, Tel Hashomer, Israel|