Arthur Bradley

TL;DR: It is inferred that subjective best focus occurs when the area of the central, aberration-free region of the pupil is maximized, and that correction of the 12 largest principal components, or 14 largest Zernike modes, would be required to achieve diffraction-limited performance on average for a 6-mm pupil.

TL;DR: It is concluded that objective methods of refraction based on wavefront aberration maps can accurately predict the results of subjective refraction and may be more precise and wavefront methods may become the new gold standard for specifying conventional and/or optimal corrections of refractive errors.

TL;DR: In this article, the effects of contrast on human psychophysical orientation and spatial frequency discrimination thresholds and on the responses of individual neurons in the cat's striate cortex have been compared, and it was shown that, on average, the discrimination of orientation or spatial frequency improves with contrast at low contrasts more than at higher contrasts.

TL;DR: The reduced eye was further modified by changing the refracting surface to an aspherical shape to reduce the amount of spherical aberration, providing an improved account of both the longitudinal and transverse forms of ocular chromatic aberration.

TL;DR: Subjective judgment of best focus does not minimize RMS wavefront error, nor create paraxial focus, but makes the retina conjugate to a plane between these two, and it is possible to precisely predict subjective sphero-cylindrical refraction for monochromatic light using objective metrics.