title: Reversible cataracts in diabetes mellitus.
abstract: BACKGROUND
  True diabetic cataracts are rare and have been infrequently reported in the literature. They often have a rapid onset, appear as white punctate or stellate opacities, and can resolve without treatment. The following case report describes reversible cataracts as a complication of diabetes mellitus with photodocumentation.
  
  
  METHODS
  A fifty-two-year-old white male was examined 5 days following the initiation of insulin therapy for severe hyperglycemia. The patient complained of sudden onset visual disability and extreme glare. He was given a complete ophthalmic examination and was monitored for 3 months.
  
  
  RESULTS
  The patient was diagnosed with acute posterior subcapsular cataracts secondary to diabetes mellitus. Within the following 7 weeks the lens opacities resolved without intervention. During this time period, the patient also exhibited a transient hyperopic refractive change.
  
  
  CONCLUSIONS
  The transient nature of the diabetic cataract is related to changes in lens hydration. Biochemical changes that occur as a result of rapid changes in blood sugar cause the lens fibers to swell, forming a cataract. The same mechanism is responsible for the hyperopic refractive change. Patients presenting with this condition have been shown to stabilize within 3 months.
authors.forename: P A
authors.initials: PA
authors.lastname: Butler
mesh_terms: D000208:Acute Disease; D002386:Cataract / Q000209:etiology / Q000473:pathology / Q000503:physiopathology*; D003924:Diabetes Mellitus, Type 2 / Q000150:complications*; D006801:Humans; D007908:Lens, Crystalline / Q000473:pathology / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D012075:Remission, Spontaneous; D014792:Visual Acuity