Vacuum trephination of the hypotonous eye
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Updated: Aug 19, 2026

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Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct
Published on: January 22, 2010
Abstract:
Removal of the recipient cornea in therapeutic keratoplasties is made more difficult by the hypotonous eye. A deep and symmetrical cut can be obtained by use of the vacuum trephine without unduly endangering the iris or lens. This technique may be preferred to other more time-consuming methods of pre-pressurizing the eye, and allows a better removal of the recipient cornea than with scissors removal following an epithelial mark.

