ABO REVIEW with correct answers

Sclera - Answer Tough, white outer coat of the eyeball myopia - Answer nearsightedness; the condition in which parallel rays of light are brought into focus in front of the retina, rather than on it reflection - Answer light that bounces back refraction - Answer when the direction of light changes as it passes from one medium to another(bending of light) presbyopia - Answer Age of 40 need reading glass crystalline lens diminishes frame difference - Answer the difference betweeen the horizontal and vertical measurement Ex. 50-45= 5mm MPD - Answer mechanical PD in a finished pair of glasses the distance between the optic center measuring PD - Answer should sit at 40 cm(16in) from patient