Related Experiment Video
Updated: Aug 19, 2026
07:11
Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
Clinical measurement of glare effect in cataract patients
Annals of Ophthalmology
|May 1, 1989
Abstract:
Glare complaints are common for patients with good visual acuity. Spot glare sensitivity is a sensitive measure of intraocular scattering caused by cataracts. The TVA functional vision tester was used to measure contrast sensitivity with and without spot glare. The case studies presented compare relative spot glare disability for cataractous and normal patients with the same visual acuity. The glare measurements show distinct attenuation of contrast sensitivity for cataract patients over patients with no ocular pathology.
Related Concept Videos
01:28Angle Closure Glaucoma: Treatment
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
01:22Photoreceptors and Visual Pathways
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...