PSY313H5 Lecture Notes - Lecture 3: Spinach, Middle Ear, Retinal Detachment
Document Summary
Exp. some loss of sensitivity as we age. White of eyes are white because the eye is reflecting most of the light that enters it. Pupil responds to emotional, sexual arousal, also light, etc. retina - captures light energy that leads to nerve signals two chambers: aqueous: filled with water; vitreus chamber: contains jelly like substance. Muscles change refractory power of eye by increasing curvature of lens therefore making it able to focus on closer objects; increasing curvature as objects get closer. Near point: smallest point at which you can see an object clearly; lens has reached its maximum curvature. With age vitreus humour (transparent jelly in vitreus chamber) becomes more opaque (loses transparency), makes image harder to reach retina at back of eye. All physiological factors for vision loss added up do not account for visual acuity which means that neural parts of the visual system also plays a role.
