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Hyperproliferative embryotoxon simulating double cornea.
Karthikeyan Mahalingam1, Abhishek Singh1, Viney Gupta1
1Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, Delhi, India.
BMJ Case Reports
|December 23, 2021
Summary
Posterior embryotoxon, a key feature of Axenfeld Rieger syndrome, presented unusually in a recent case. This report details a rare corneal manifestation mimicking a double cornea and double pupil.
Area of Science:
- Ophthalmology
- Genetics
- Corneal Diseases
Background:
- Axenfeld Rieger syndrome is a genetic disorder affecting eye development.
- Posterior embryotoxon, an anteriorly displaced Schwalbe's line, is its most common ocular finding.
Observation:
- A case of Axenfeld anomaly exhibited a unique corneal presentation.
- The posterior embryotoxon was symmetrically hyperproliferated.
- This unusual morphology mimicked a double cornea and a double pupil.
Findings:
- The case highlights a rare, symmetric, hyperproliferated posterior embryotoxon.
- This finding expands the spectrum of corneal manifestations in Axenfeld anomaly.
- The presentation mimicked structural anomalies like a double cornea and double pupil.
Implications:
- This case broadens the understanding of posterior embryotoxon variations.
- It emphasizes the importance of detailed corneal examination in Axenfeld Rieger syndrome.
- Accurate diagnosis is crucial for managing potential associated glaucoma and visual impairment.

