Do Now 2/14/13-2/15/13
Do Now 2/14/13-2/15/13. What causes astigmatism? What is hyperopia ? Is the eyeball too long, too short, or average? What is myopia? Is the eyeball too long, too short, or average? What is emmetropia ? Is the eyeball too long, too short, or average?. SENSES.
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