歯学ジャーナル
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概要

OCT in Prone Position: A New Approach to Glaucoma

Honassys R Rocha Silva

Glaucoma is characterized by a progressive loss of ganglion cells and of the retinal nerve fiber layer (RNFL), mostly related to an intraocular pressure higher than normal. According to the format of the camerular sinus, Glaucoma is divided in Open-Angle and Angle-Closure. Classically, it is known that angle-closure glaucoma is more aggressive than Open-angle Glaucoma for reaching extremely high intraocular pressure levels.
The technique that we created is an improvement of the technique idealized and knew as a prone position provocative test for angle-closure glaucoma. As OCT did not exist at that time, the identification of the patient with angle-closure glaucoma was done by comparing the IOP measurements before and after a time with the patient in prone position.
The objective of this study is to present a new diagnostic approach using an existing technology: the optical coherence tomography (OCT). The innovation lies in how to use the OCT device. We have developed a theoretical system of identification of the camerular sinus type which can improve the diagnosis of angle-closure glaucoma. The improved system for optic coherence tomography, object of this article, consists of an apparatus for performing OCT examination of the anterior segment in the lying position.