L B Godio

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This study assessed the fitting and visual performance of a rigid, gas permeable (RGP), monocentric, alternating bifocal. Fourteen presbyopic eyes each wore 24 different lenses consisting of all combinations of 2 diameters, 2 segment heights, 2 prism ballasts, and 3 fitting relations. The influence of parameter selection on visual performance and the(More)
For paraxial objects viewed at finite distances from the correction plane, retinal image size and retinal distortions due to astigmatism are obtained for spectacle- or contact-lens-corrected aphakic individuals with astigmatism. Our methods are based not on the analysis of schematic or reduced eyes but on clinical measurements (corneal, refractive,(More)
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