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low vision
Term | Definition |
---|---|
central vision loss | cataracts, age related macular degeneration |
cataracts | reduced visual acuity |
cataracts | blurry vision |
cataracts | decreased ability to distinguish colors |
cataracts | distortion of visual images |
cataracts | increased glare sensitivity |
cataracts | increased difficulty distinguishing similarly colored objects from the background |
age related macular degeneration | impaired mobility skills |
age related macular degeneration | reduced ability to perform ADL's and IADL's |
age related macular degeneration | decreased ability to recognize faces and perform detail work (reading, needlepoint, writing) |
age related macular degeneration | difficulty with social participation |
peripheral vision loss | glaucoma |
glaucoma | difficulty in task and activities such as ambulation, reading, writing |
diabetic retinopathy | fluctuating vision loss |
diabetic retinopathy | blurry vision |
diabetic retinopathy | reduction in contrast sensitivity |
diabetic retinopathy | decrease in the ability to drive at night |
diabetic retinopathy | reduction in color discrimination |
diabetic retinopathy | patchy spots of visual field loss |
diabetic retinopathy | total blindness |
presbyopia | difficulty focusing on near objects |
ADL and IADL assessments | Melbourne Low Vision ADL index, Canadian Occupational Performance Measure |
Visual acuity assessments | lighthouse near visual acuity test, Snellen E chart or tumbling E chart |
visual field assessments | (peripheral) Confrontation testing, central ampler grid |
constrast sensitivity assessments | Pelli-Robson constrict sensitivity chart |
central vision loss | teach clients to rotate their head or turn their trunk to use peripheral vision using a technique called eccentric viewing |
peripheral vision loss | teach clients to rotate their head and trunk more to ensure they are seeing the entire visual field |