Diaton tonometer yields IOP readings without corneal contact

When corneal tonometry is challenging, measuring IOP through the upper eyelid at the limbus may be an alternative.“There are certain conditions where you cannot achieve a reliable pressure through the cornea,” Emil W. Chynn, MD, FACS, MBA, of Park Avenue Laser Vision in New York, told Ocular Surgery News. Such conditions include eyes with severe scarring, corneal edema, ocular trauma or a keratoprosthesis.

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