Related Experiment Video
Updated: Sep 22, 2025

09:29
A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
Published on: February 11, 2014
13.2K
Screening for Impaired Visual Acuity in Older Adults: US Preventive Services Task Force Recommendation Statement
, Carol M Mangione1, Michael J Barry2
1University of California, Los Angeles.
JAMA
|May 24, 2022
Summary
Vision impairment is a significant public health issue for older adults. Current evidence is insufficient to determine the benefits and harms of screening for visual acuity impairment in asymptomatic seniors.
Area of Science:
- Ophthalmology
- Public Health
- Preventive Medicine
Background:
- Impaired visual acuity affects millions of older adults, diminishing quality of life and increasing injury risks.
- Conditions range from visual acuity worse than 20/40 to blindness (20/200 or worse).
Purpose of the Study:
- To update recommendations on screening for impaired visual acuity in older adults.
- Evaluate the benefits and harms of screening in primary care settings.
Main Methods:
- Systematic review commissioned by the US Preventive Services Task Force (USPSTF).
- Focused on asymptomatic adults aged 65 and older without known vision problems.
Main Results:
- The USPSTF found insufficient evidence to assess the benefits and harms of screening.
- The balance of benefits and harms could not be determined due to a lack of research.
Conclusions:
- Current evidence is insufficient to recommend for or against screening for impaired visual acuity in asymptomatic older adults.
- Further research is needed to guide clinical practice and public health policy.
Related Concept Videos
Glaucoma: Overview
829
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
829
Photoreceptors and Visual Pathways
6.5K
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,...
6.5K
Open Angle Glaucoma: Treatment
630
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
630

