Cataract is an opacification or thickening of the lens within the globe and is the leading cause of blindness in the world 2

Visual deterioration occurs with increasing degrees of severity. The diagnosis is made clinically.

Common causes include:

Ocular ultrasound is performed when there is suspicion of posterior globe pathology but visualisation of the back of the eye is obscured by the opaque lens.

Especially useful in acute cataract formation with increased fluid within the lens as in traumatic and osmotic cataract (hyperglycaemia) as well as unsuspected lens injury. The affected lens is hypodense compared to the contralateral lens with a mean density difference of about 30 HU 3.

Treatment is surgical removal of the lens which is usually replaced by an intraocular lens implant.

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Article information

rID: 1059
Section: Pathology
Tag: refs
Synonyms or Alternate Spellings:
  • Cataracts
  • Ocular cataract
  • Ocular cataracts

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Cases and figures

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    Case 1: ultrasound showing cataract
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    Case 2: with retinal detachment
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    Case 3
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    Case 4
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    Case 5: Traumatic cataract
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