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Crystalline retinopathy in primary hyperoxaluria.

Omar S Punjabi¹, Kamran Riaz, Marilyn B Mets

¹Department of Ophthalmology, Children's Memorial Hospital, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA.

Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus

|May 21, 2011

Summary

Type 1 primary hyperoxaluria caused severe systemic oxalosis and massive retinal crystalline deposits in an infant. This case highlights unusual retinal dysfunction, impacting vision in young children with oxalosis.

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Area of Science:

Ophthalmology
Pediatrics
Medical Genetics

Background:

Primary hyperoxaluria type 1 (PH1) is a rare metabolic disorder.
Systemic oxalosis occurs due to excessive oxalate accumulation.
Early diagnosis and management are crucial to prevent organ damage.

Observation:

A 2.5-month-old boy presented with severe systemic oxalosis.
Massive retinal crystalline deposition was observed.
Maculopathy was confirmed via optical coherence tomography, with associated nystagmus.

Findings:

Electroretinography revealed significant retinal dysfunction.
The observed retinal dysfunction is atypical for oxalosis cases.
This suggests a severe impact of oxalate deposition on retinal function.

Implications:

This case underscores the potential for severe ocular manifestations in infantile PH1.
Early detection of retinal involvement in oxalosis is critical.
Further research into the mechanisms of retinal damage in oxalosis is warranted.