ABO NOCE Basic Opticianry

Category - Ophthalmic Optics

Consider the following prescription, where would the thickest part of the lens be when the patient is wearing this prescription?

Prescription: OD -.25 -3.00 X 90, OS -1.25 -2.00 X 87
  1. The outer edges of the lens
  2. The inner edges of the lens
  3. The upper edge of the lens
  4. The lower edge of the lens
Explanation
Answer: C - The thickest part of the lens for this prescription would be the upper edge of the lens.
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