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Chapter-15 Current Role of Imaging in Glaucoma Management

BOOK TITLE: Gems of Ophthalmology—Glaucoma

Author
1. A Murali
2. M Palani
3. S Rajagopal
4. N Madhivanan
ISBN
9789352702497
DOI
10.5005/jp/books/18037_16
Edition
1/e
Publishing Year
2018
Pages
44
Author Affiliations
1. MN Eye Hospital, Chennai; Swamy Eye Clinic, Chennai, Tamil Nadu, India
2. MN Eye Hospital, Chennai, Tamil Nadu, India
3. MN Eye Hospital, Chennai, Tamil Nadu, India
4. MN Eye Hospital, Chennai, Tamil Nadu, India
Chapter keywords
Glaucoma, intraocular pressure, IOP, retinal ganglion cell, RGC, optic nerve head, ONH, scanning laser polarimetry, optical coherence tomography, confocal scanning laser ophthalmoscope

Abstract

This chapter describes the current role of imaging in glaucoma management. Glaucoma is a progressive optic neuropathy with characteristic optic disk changes and corresponding visual field loss, for which elevated intraocular pressure (IOP) is one of the main risk factor. In glaucoma the structural damage usually precedes the functional deterioration and by the time white on white perimetry shows defect, about 40–45% of retinal ganglion cells (RGC) are lost. This is attributed to the fact that even if some RGC are lost, the surrounding ganglion cells subserving the same area would signal the presence of the target and there would be no functional visual field loss. Hence structural evaluations of the optic nerve head (ONH) and retina is the key for the early diagnosis and follow-up of glaucoma patients. This chapter covers the scanning laser polarimetry, confocal scanning laser ophthalmoscope, optical coherence tomography, scanning laser polarimetry, optical coherence tomography, and future developments in glaucoma imaging.

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