116-4F

extent of physical space you are able to perceive visual signals

hyperopia

• shallower eyeballs

• images fall behind retina

• deeper eyeballs

• images in front of retina

unevenly curved surfaces on or in the eye, especially of the cornea

perfect retraction of the eye

• emmetropia

• hyperopia

• myopia

• presbyopia

proper eye binocular alignment

change of lens curvature

function: bending of light

Function: entry of light

Purpose of cerumen

• lubrication

• waterproofs the canal

• protection from foreign agents

• to protect from sound

yellowish, waxlike secretion