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Providing Access to the Visual Environment

2014-07-23 21:43:25 | BioPortfolio

Summary

Providing Access to the Visual Environment is a pediatric low vision grant which has the ability to provide comprehensive, interdisciplinary low vision rehabilitation services to every child in Tennessee with a vision impairment. Children, ages 3-21, with best-corrected vision of 20/50 or worse in the better seeing eye are prescribed optical devices to improve their visual functioning and trained to use the devices.

Description

Subjects are enrolled each school year based on referrals from school systems in Tennessee, ophthalmologists, and optometrists. A total of 90 new students are enrolled each year. Students are provided a comprehensive low vision rehabilitation evaluation by a low vision optometrist and prescribed optical devices to improve distance appreciation, near reading, and other tasks based on individual needs. Students are then trained to use the devices efficiently by master's level teachers of the visually impaired. The teachers travel to the students environment (school/home/work) for the training.

Variables such as ocular disease, age, visual acuity, visual improvement with optical devices, type of optical device, and reading speed are defined for each student. Providing Access to the Visual Environment also provides...

Study Design

Observational Model: Case-Only, Time Perspective: Prospective

Conditions

Vision Impairment

Location

Vanderbilt Eye Institute
Nashville
Tennessee
United States
37232-8808

Status

Recruiting

Source

Vanderbilt University

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-07-23T21:43:25-0400

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PubMed Articles [3111 Associated PubMed Articles listed on BioPortfolio]

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Medical and Biotech [MESH] Definitions

Vision considered to be inferior to normal vision as represented by accepted standards of acuity, field of vision, or motility. Low vision generally refers to visual disorders that are caused by diseases that cannot be corrected by refraction (e.g., MACULAR DEGENERATION; RETINITIS PIGMENTOSA; DIABETIC RETINOPATHY, etc.).

Application of tests and examinations to identify visual defects or vision disorders occurring in specific populations, as in school children, the elderly, etc. It is differentiated from VISION TESTS, which are given to evaluate/measure individual visual performance not related to a specific population.

Defects of color vision are mainly hereditary traits but can be secondary to acquired or developmental abnormalities in the CONES (RETINA). Severity of hereditary defects of color vision depends on the degree of mutation of the ROD OPSINS genes (on X CHROMOSOME and CHROMOSOME 3) that code the photopigments for red, green and blue.

Type of vision test used to determine COLOR VISION DEFECTS.

Failure or imperfection of vision at night or in dim light, with good vision only on bright days. (Dorland, 27th ed)

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