This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in


Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Causes of cataract include:

  • old age (senile cataract) - caused by gradual build up of yellow-brown pigment within the lens resulting in reduced light transmission (1)
  • secondary to ocular disease:
    • glaucoma
    • degenerative
    • myopia
    • retinal detachment
  • metabolic and endocrine causes:
    • diabetes mellitus
    • galactosaemia
    • hypocalcaemia
    • hypoglycaemia
    • steroids
  • infective causes:
    • rubella
    • inflammation
  • physical causes:
    • trauma
    • radiotherapy
    • prolonged exposure to infra red rays e.g. glassblower's cataract
    • electric shock
  • genetic:
    • congenital in 1 in 250 neonates
    • myotonic dystrophy
    • Refsum's disease
    • Laurence-Moon-Biedl syndrome
    • hepatolenticular degeneration
  • toxic agents:
    • corticosteroids
    • phenothiazines
    • 2,4 DNP
    • tripanolol


Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page