Summary
This proof-of-concept study demonstrates a one-minute pupillometry test using nine simultaneously flickering visual sub-regions at different temporal frequencies to objectively map visual field defects caused by retinal or optic nerve disease. The test's speed and objectivity make it a promising clinical tool for screening and monitoring chronic ophthalmic conditions without requiring active patient participation.
Key Findings
- The test uses 9 visual sub-regions modulated at 9 different temporal frequencies analyzed over 45 seconds of passive fixation.
- Pupillary spectral power responses distinguished patients with retinal and optic nerve diseases from healthy participants with 'remarkable sensitivity and specificity' at both global and local (regional) scales.
- Total test duration is approximately one minute, enabling rapid, objective assessment of anterior afferent visual pathway integrity.
Categories
Eye Health & Vision: Presents a novel pupillary light response test for detecting retinal and optic nerve disease across visual field regions.
The Science of Light: Utilizes frequency-tagging of luminance modulation and spectral analysis of pupillary responses to probe photoreceptor and afferent visual pathway function.
Author(s)
S Ajasse, C Vignal-Clermont, S Mohand-Saïd, C Coen
Publication Year
2022
Number of Citations
2
Related Publications
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The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice