The hidden pupil: a unilateral congenital corectopia
BMJ 2020; 368 doi: https://doi.org/10.1136/bmj.m847 (Published 26 March 2020) Cite this as: BMJ 2020;368:m847
- Xuhua Tan, ophthalmology attending,
- Lixia Luo, professor of ophthalmology
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, China
- Correspondence to L Luo luolixia{at}gzzoc.com
This slit lamp photograph (fig 1) shows unilateral congenital corectopia in the left eye. The patient was a 5 month old boy who was referred for visual unresponsiveness and absence of a pupil in the left eye. His right eye was normal.
Further examination revealed a triangular inferiorly displaced pupil, completely covered by the posterior pigmented iris tissue (fig 1, arrow), becoming visible after administration of mydriatics. Prompt recognition is important as timely surgical intervention may be needed to preserve visual acuity.
Corectopia describes the displacement of the pupil from the centre in any direction and can be congenital or acquired.1 Congenital corectopia is usually bilateral and isolated unilateral congenital corectopia is rare.2
Footnotes
Parental consent obtained.
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