Eye: Cataract-Clinical stages of cataract development, Clinical manifestations


Clinical stages of cataract development:
  1. Immature cataract
  • Not completely opaque
  • Some light is transmitted through them, allowing useful vision
  1. Mature cataract
  • Are completely opaque
  • Vision is significantly reduced
3. Intumescent cataract-
  • The lens absorbs water and increases in the size
4. Hyper mature cataract
  • The lens proteins break down into short chain polypeptides & that leak out through the lens capsule
  • The pieces of protein are engulfed by macrophage, which may obstruct the trabecular meshwork causing phacolytic glaucoma.
  • A hyper-mature cataract in which the lens nucleus floats freely in the capsular bag is called a Morgagnian cataract.

Clinical manifestations
  • Painless, blurry vision is characteristic of cataracts (The patient perceives that surroundings are dimmer as if glasses need cleaning)
  • Reduced contrast sensitivity
  • Sensitivity to glare
  • Reduced visual acuity
  • Myopic shift
  • Astigmatism
  • Monocular diplopia (i.e., double vision)
  • Color shift (i.e., the aging lens becomes progressively more absorbent at the blue end of the spectrum)
  • Brunescens (i.e., color values shift to yellow-brown)
  • Reduced light transmission.



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notes.nursium.com: Eye: Cataract-Clinical stages of cataract development, Clinical manifestations
Eye: Cataract-Clinical stages of cataract development, Clinical manifestations
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