Abstract
A new system of subjective methods of measuring resolving power (visual acuity)
on the basis of modern standards is proposed in order to solve problems of physiological
optics. New principles for constructing tables of optotypes have been developed in
accordance with modern methods of iconics. The new set of optotypes makes it possible to
extend the possibilities of determining the visual acuity: to measure visual acuity
above 1.0 more accurately, to accurately determine the visual acuity of patients
confined to bed, and also to measure near visual acuity less than 0.1. New computer
programs have been developed in order to monitor visual acuity on the basis of the
modulation-transfer function. A high correlation has been detected between the indices
of visual acuity determined from optotypes and the upper limiting frequency of the
modulation-transfer function.
© 2008 Optical Society of America
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