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Heterochromia after pediatric cataract surgery
T D Lenart1, A V Drack, R W Tarnuzzer
1Emory Eye Center, Emory University, Atlanta, Georgia 30322, USA.
Summary
Cataract surgery in children can cause iris color darkening in the operated eye. This change may be linked to increased prostaglandin release, similar to latanoprost effects.
Area of Science:
- Ophthalmology
- Pediatric Surgery
- Ocular Pharmacology
Background:
- Anecdotal reports suggest iris color changes after infant cataract surgery.
- The underlying mechanism for these changes remains uninvestigated in the biomedical literature.
Purpose of the Study:
- To systematically investigate iris color changes following cataract surgery in children and rhesus monkeys.
- To explore the potential mechanism, specifically prostaglandin involvement, in these observed iris color alterations.
Main Methods:
- Photographic documentation and masked examiner assessment of iris color in operated versus non-operated eyes of 15 children and 11 monkeys.
- Measurement of prostaglandin F(2alpha) levels in aqueous and vitreous humor of neonatal monkeys post-lensectomy.
Main Results:
- A darker iris was observed in the operated eye of 13 of 15 children.
- Monkeys showed uniformly darker or patchy iris darkening in the operated eye.
- Elevated prostaglandin F(2alpha) levels were detected in the operated eyes of neonatal monkeys.
Conclusions:
- Cataract surgery is associated with iris color darkening in some pediatric patients.
- The observed darkening is hypothesized to result from excessive prostaglandin release stimulated by the surgery.
- This mechanism may be similar to that of latanoprost-induced iris pigmentation changes.