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nmdcat.online July 7, 2026

The primary function of the retinal pigment epithelium is to

A. Refract light onto the fovea
B. Synthesize aqueous humor
C. Absorb scattered light and regenerate visual pigments
✓
D. Generate action potentials

📝 Explanation

The dark pigment epithelium absorbs stray light (preventing reflection/blurring) and plays a critical biochemical role in storing Vitamin A and reconverting all-trans-retinal back to 11-cis-retinal for the photoreceptors.

📖 Additional Information

  • Refract light onto the fovea
  • Synthesize aqueous humor
  • Absorb scattered light and regenerate visual pigments
  • Generate action potentials

The dark pigment epithelium absorbs stray light (preventing reflection/blurring) and plays a critical biochemical role in storing Vitamin A and reconverting all-trans-retinal back to 11-cis-retinal for the photoreceptors.

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