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DEFECT OF SIGHT (EMMETROPE (DEFECT OF FOCUSING, DISEASE OF THE LENS),…
DEFECT OF SIGHT
EMMETROPE
DEFECT OF FOCUSING
DISEASE OF THE LENS
MYOPIA
REFRACTIVE POWER TOO STRONG
IN FRONT
CONCAVA LENS
EYEBALL TOO LONG
IN FRONT
HYPERMETROPIA
REFRACTIVE POVER TOO WEAK
BEHIND
CONVEX LENS
EYEBALL TOO SHORT
BEHIND
ASTIGMATISM
CORNEA
SPECIAL LENS
HARD CONTACT LENS
PRESBYOPIA
OLD AGE
LOSS OF ELASTICILY
DALTONISM
BLINDNESS