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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 |