DocumentCode
1385331
Title
Automated keratometry at low cost
Author
Ventura, Liliane ; Messias, André M Vieira ; Sousa, Sidney J F ; Coelho, Renato
Author_Institution
Lab. de Fisica Oftalmica, Sao Paulo Univ., Brazil
Volume
19
Issue
5
fYear
2000
Firstpage
97
Lastpage
103
Abstract
Describes an automatic optical system that is attached to a slit lamp in order to provide automatic keratometry at low cost. The system consists of projecting a light ring as a target onto the patient´s cornea as well as analysis of the deformation of the target in order to obtain the radius of curvature and the axis of the associated astigmatism. The reflected image of the target is displayed on a PC monitor, while dedicated software performs the analysis of the image, which provides the corneal keratometry
Keywords
automatic test equipment; biomedical equipment; eye; medical image processing; optical instruments; PC monitor; astigmatism axis; automatic optical system; corneal keratometry; curvature radius; dedicated software; image analysis; light ring projection; medical instrumentation; slit lamp; target deformation; Biomedical optical imaging; Cornea; Costs; Lamps; Lenses; Optical fibers; Optical refraction; Optical variables control; Refractive index; Telescopes;
fLanguage
English
Journal_Title
Engineering in Medicine and Biology Magazine, IEEE
Publisher
ieee
ISSN
0739-5175
Type
jour
DOI
10.1109/51.870236
Filename
870236
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