PSY345H5 Lecture Notes - Lecture 8: Fingerspelling, Visual Impairment, Retina
Document Summary
Young eye is able to accommodate and change shape to provide focus image to retina cons photosensitive receptors that fire or don"t fire when seeing something. Ophthalmologist - medical doctor who specializes in eye diseases and disorders. Eyes are sensitive metabolic can also affect vision. Prematurity, birth trauma or complications (including oxygen deprivation). Eg not complete formation of eyes birth trauma neurological organs only that long that cells can live without o2 when they die. Disruption of eye muscle coordination (e. g. , secondary to cerebral palsy). Can result in uncontrollable eye movements may not be able to fixate and focus on things. Visual acuity: distance from which an object can be recognized. Fixated distance from which you are allowed to look at chart and say what objects are- you reach threshold of vision base don fixed size from what you can see . Less about how big how close you need to be before you are able to see something.
