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Related Experiment Videos

Phenylketonuria does not cause cataracts.

D B Pitt1, J O'Day

  • 1Murdoch Institute, Royal Children's Hospital, Parkville, Melbourne, Australia.

European Journal of Pediatrics
|July 1, 1991
PubMed
Summary
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This study found no evidence that phenylketonuria (PKU) causes cataracts. The incidence of cataracts in PKU patients was similar to the general population, suggesting other factors may be involved.

Area of Science:

  • Ophthalmology
  • Metabolic Disorders
  • Genetics

Background:

  • Phenylketonuria (PKU) is a rare genetic disorder.
  • Previous claims suggested a link between PKU and cataracts.
  • Cataract formation in PKU patients requires further investigation.

Purpose of the Study:

  • To investigate the incidence of cataracts in adults with untreated phenylketonuria (PKU).
  • To determine if PKU is a causative factor in cataract development.

Main Methods:

  • Study included 46 adults with untreated PKU (aged 28-71).
  • Cataract incidence compared to Australian population and intellectually disabled controls.
  • Slit-lamp biomicroscopy used for detailed eye examinations.

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Main Results:

  • 3.3% of PKU patients had cataracts, similar to control groups.
  • Two PKU patients with cataracts showed potential links to phenothiazine use.
  • Minor lens opacities found in 40% of PKU patients, comparable to controls.

Conclusions:

  • The study found no support for PKU causing cataracts.
  • Cataract incidence in PKU is not significantly higher than in the general population.
  • Other factors, such as medication, may contribute to cataracts in PKU patients.