EXPORT CITATION

Chapter-12.3 Macular Function Tests

BOOK TITLE: Postgraduate Ophthalmology (2 Volumes)

Author
1. Kumar Vasu
2. Dave Vivek P
ISBN
9789350252703
DOI
10.5005/jp/books/11051_48
Edition
1/e
Publishing Year
2012
Pages
11
Author Affiliations
1. Guru Nanak Eye Center, Maulana Azad Medical College, New Delhi, India
2. Dr Rajendra Prasad Center for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
Chapter keywords
macular function tests, macular diseases, macular function in eyes, opaque media, cataract, dense vitreous hemorrhage, visual disturbances, retina, macula, optic nerve, visual pathway, brain, macular degeneration, computerized models, psychophysical perimetry, pupillary evaluation, retinal disease, optic nerve disease, foveal flicker sensitivity, grating psychophysics, laser interferometry, potential visual acuity meter, dark adaptometry, microperimetry, topographic correlation, fundus details, electroretinogram, corneal measure of electrical activity, incident light, scotopic rod response, photopic single flash cone response, oscillatory potentials, multifocal ERG, pattern ERG, electrooculogram, visual evoked potential

Abstract

Macular function tests are required for diagnosing as well as for following up of macular diseases, and for evaluating the potential macular function in eyes with opaque media, such as cataract and dense vitreous hemorrhage. The Amsler grid is a diagnostic tool that aids in the detection of visual disturbances caused by changes in the retina, particularly the macula as well as the optic nerve and the visual pathway to the brain. Amsler grid has been phenomenal in the evaluation and monitoring of patients with age related macular degeneration. Computerized models of such psychophysical perimetry are now available. Pupillary evaluation is one of the most important and indispensable clinical methods for determining the functions of the posterior segment of the eye in the form of extensive retinal disease or optic nerve disease in the presence of an opaque media. Foveal flicker sensitivity, grating psychophysics, laser interferometry, the potential visual acuity meter, and dark adaptometry are discussed. Microperimetry allows for exact topographic correlation between fundus details and its light sensitivity. The electroretinogram is the corneal measure of electrical activity generated at the retina in response to incident light. Scotopic rod response, photopic single flash cone response, oscillatory potentials, and multifocal ERG are discussed. Pattern ERG, electrooculogram, and visual evoked potential are described.

© 2019 Jaypee Brothers Medical Publishers (P) LTD.   |   All Rights Reserved

Powered by MPS ScholarStor