What is Aphakia?

on
APHAKIA
It is the absence of a lens from the pupillary area.

 

 What are the causes of APHAKIA?

  1. Removal of a lens by the surgery is the most common cause.
  2. Hypermature cataracts very rarely, all the lens matter is absorbed and the capsule is left behind.
  3. Absorption of the lens matter.
  4. Trauma or perforating injury causes anterior capsule rupture with subsequent absorption of the lens matter.
Symptoms of APHAKIA
    
Reduced vision both for distance and near because the aphakic eye is highly hypermetropia due to the absence of a lens.

Signs of APHAKIA
  1. Retinoscopy shows high hypermetropia.
  2. Purkinjes images are absent.
  3. Pupil appears jet black in appearance.
  4. The anterior chamber is deep.
  5. Iris shows tremulousness iridodonesis.
  6. Limbus may show linear scars.
Treatment of APHAKIA

An eye's normal refractive power (59 diopters) is due to the cornea and lens. After cataract extraction, the aphakic eye has a refractive power of  +43 D due to cornea. The refractive state of the highly hypermature, patient is visually handicapped and cannot manage life.

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