FRHD 2110 Study Guide - Final Guide: Snellen Chart, Diabetic Retinopathy, Aqueous Humour

• School: University of Guelph
• Department: Family Relations and Human Development
• Course: FRHD 2110
• Professor: Professor

Document Summary

4 most common symptoms of what brain injury entails for children: 1) injury to brain by external force. Majority who are deaf-blind have someother exceptionality -about11%ndividuals between birth-22. Legally blind-20/200 or less in better eye/narrow field less than 20 . Low vision- not so severe (can read larger print). Myopia = nearsighted (when eyeball is too long) hyperopia =farsighted (eyeball is too short) astigmatism- blurred vision(irregular cornea/ lens formation) Glaucoma= often due to pressure in the eyeball &cause is unknown. (untreated, blindness occurs) cataracts= caused by clouding of lens of eye-affects colour&distance. Diabetic retinopathy =results from interference with blood supply levels to retina. Retinitis pigmentosa= hereditary resulting in degeneration of retina& can start in infancy/early child/ teen years. Also affects ability to see in low light (night blindness) and causes field of vision to narrow. Tunnel vision= problems in peripheral, or narrowing of fov*several other visual impairments primarily affect children.