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An analysis of three meridional keratometric measurement of the anterior corneal surface
Author(s) -
Royston J. M.,
Dunne M. C. M.,
Barnes D. A.
Publication year - 1989
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1989.tb00916.x
Subject(s) - keratometer , anterior surface , zonal and meridional , optics , surface (topology) , meridian (astronomy) , cornea , corneal topography , ophthalmology , mathematics , physics , anatomy , medicine , geometry , astronomy , atmospheric sciences
Analysis of measurements taken in three meridians of a toroidal optical surface can produce a spherocylindrical result without having to locate the principal meridians. This technique is assessed for the anterior corneal surface using keratometry. Good agreement is found with measurements taken in the principal meridians making this a suitable method for the assessment of the eye's optical surfaces by Purkinje image measurement.