CS2- Case analysis
Worth correcting - ANS-Significant RE
Greater than 1.5 - ANS-Correct hyperopia when
Greater than 1 - ANS-Correct myope
When greater than 1 - ANS-Correct astigmatism
When greater than 1 - ANS-Correct anisometropia
WTR - ANS-Most corneal astigmatism is
More power in vertical meridian, horizontal line forms first in eye - ANS-WTR definition
EP at near, remove glasses or use a bifocal to diverge eyes at near - ANS-Myopia in kids
Myopic - ANS-Nuclear cataract makes older people more
Hyperopic - ANS-Most people are
Around 40-45, stabilizes around 55, gone at 65 - ANS-Presbyopia ages of onset
Accommodative Amplitude, FCC with NRA and PRA, Trial framing (range), and age chart -
ANS-Ways to determine tentative ADD
CD-(more exo) or (plus more exo)/ 2.5 - ANS-Formula for ac/a: kaiser
PD(cm)+TD(m)(near phoria- distance phoria)
ESO is plus
Exo is minus - ANS-Formula for ac/a: other
Use for exo
2(phoria)-compensating vergence/ 3 - ANS-Sheards criterion
Used for EP
Greater/3 - lesser(2)/3 - ANS-Percivals criterion
Minus lenses - further converge the eyes - ANS-Do not give ... to an eso
Plus lenses - further diverge the eyes - ANS-Do not give ... to an exo
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