A new keratometer measures peripheral cornea curvature, suggesting an advanced tool for eye care.
A keratometer design is described which uses Drysdale's method for determining the radius of a curved surface with the use of a spherocylindrical lens system to allow simultaneous observation of the surface and center of curvature images. This not only results in a simple compact keratometer but also provides an instrument that can be used to measure the radius of curvature of the peripheral cornea.
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W. A. Douthwaite (1987) studied this question.
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