Low Vision Flashcards
what qualifies an individual as having low vision
visual acuity <20/40 in the better seeing eye
what qualifies an individual as being bling
visual acuity =20/200 in the better seeing eye
presbyopia
difficulty focusing on near objects
analyzes a visual target in terms of its details, color, shape, texture
central or focal vision system
provides background information about ones position in relation to the environment and is quick to detect motion
peripheral or ambient visual system
central vision loss where the lens becomes more opaque and a reduction of light going to the retina
cataracts
deposits of yellow material within the macula of the eye causing retinal atrophy and a gradual loss in central vision
dry age related macular degeneration
proliferation of abnormal blood vessels that leak blood and fluid into the macula causing central vision loss; progresses quickly
wet age related macular degeneration
disease causing intraoccular pressure related to peripheral vision loss
glaucoma
assesses the impact of a persons visual impairment on ADLs and IADLs
Melbourne low vision ADL index
used to assess central vision
Amsler grid
method of rotating the head or trunk to use peripheral vision
eccentric viewing
assessment for determining the dominant eye or the eye that processes vision
flower design card
assesses presence and location of scotoma by assessing missing numbers on a clock or words in a sentence when looking centrally
Clock/sentence assessment
clients rate their ability to perform 38 vision dependent BADLs, ADLs, and IADLs
Self-report assessment of functional visual field performance profile (SRAFVP)