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A literature survey indicated some factors thought capable of causing a measurable change in corneal topography. With the exception of factors such as time and mechanical pressure, the evidence presented in the literature for some alleged effects is usually of doubtful validity. Some brief experiments by the author indicate no measurable effect on corneal topography from accommodative effort or from turning the eye in a temporal direction.
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B. A. J. Clark (1973) studied this question.
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