EPFL researchers have participated in the development of a contact lens for the early detection of glaucoma. Clinical trials are being conducted at the CHUV.

Glaucoma, which results from excessive pressure in the eye, is the second leading cause of blindness worldwide, after cataracts. Painless and invisible, this insidious disease is often detected too late by doctors, once the optic nerve has already been damaged.

In Neuchâtel, the startup Tissot Medical Research (TMR) commissioned researchers from EPFL and Haute Ecole Arc to develop a single-use contact lens capable of measuring intraocular pressure continuously for 24 hours. This could track glaucoma day and night-a minor revolution for specialists.
Most ophthalmologists use a technique called Goldmann Applanation Tonometry, which consists of applying a kind of cone with the tip flat against the cornea to measure intraocular pressure. While very accurate, this measure can only be done on an ad hoc basis, using an expensive camera in a doctor’s office. However, peaks in pressure often occur at night or in the early morning, outside normal consultation hours. Under these conditions, it is difficult to spot abnormal rates of pressure.
A blink, a measure
Composed of silicone, these smart lenses from Tissot Medical Research perform measurements at each blink of the eye, using the same principle as the traditional method. Each lens is equipped with a protuberance that presses against the cornea with each blink. In this bump within the lens,….. More:http://medicalxpress.com/news/2014-08-contact-lens-glaucoma.html
 
Source: Medical Express

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