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Related Experiment Video

Updated: Jul 3, 2026

Iris Fixation via External Pentagram Suturing

Iris Fixation via External Pentagram Suturing

Published on: May 5, 2022

Superior keratoconus with hydrops.

Napaporn Tananuvat¹, Prasert Leeungurasatien, Captain Wiriyaluppa

¹Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand. ntananuv@mail.med.cmu.ac.th

International Ophthalmology

|July 11, 2008

Summary

Superior keratoconus, a rare condition, involves an atypically high corneal apex. This case report details a patient experiencing corneal hydrops and edema, highlighting the importance of recognizing this rare keratoconus variant.

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Last Updated: Jul 3, 2026

Iris Fixation via External Pentagram Suturing

Iris Fixation via External Pentagram Suturing

Published on: May 5, 2022

Area of Science:

Ophthalmology
Corneal Diseases
Anatomic Variations

Background:

Keratoconus is a progressive thinning of the cornea, typically presenting with an inferior apical displacement.
Superior keratoconus is an uncommon variant characterized by an atypical superior corneal apex.
Corneal hydrops is a known complication of advanced keratoconus.

Observation:

A 32-year-old male presented with acute corneal hydrops in the right eye.
Ophthalmic examination revealed significant corneal edema and a Descemet's membrane break in the superior cornea.
Corneal topography of the fellow (left) eye showed superior corneal steepening, indicative of subclinical keratoconus.

Findings:

The patient's presentation of corneal hydrops and edema was localized to the superior cornea.
Diagnostic imaging confirmed superior steepening in the contralateral eye, suggesting subclinical superior keratoconus.
This case illustrates a rare presentation of keratoconus with superiorly located pathology.

Implications:

Early diagnosis of superior keratoconus is crucial for managing potential complications like hydrops.
This case expands the understanding of the clinical spectrum and potential presentations of superior keratoconus.
Further research into the genetic and biomechanical factors of superior keratoconus may be warranted.