Practice Quiz

ABO NOCE Basic Opticianry

Category - Ocular Anatomy, Physiology, and Pathology

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Superficial abrasions to the cornea usually affect which layer?
  1. Stroma
  2. Bowman’s layer
  3. Corneal endothelium
  4. Corneal epithelium
Explanation
Answer: D - Corneal epithelium

Superficial abrasions to the cornea usually affect the epithelium layer, which is the outermost layer of the cornea. It is 5 to 7 cells thick and functions as a barrier and as an important refractive optical surface. It regenerates quickly without leaving a scar.
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