Abstract: A multitask vision architecture is constructed based on multitask vision-metrics derived from wave aberration of the eye. The multitask vision metrics include at least one of the followings: vision clarity of eye that measures optical quality of an eye against those in a cohort of eyes with normal acuity, aberration-induced vision symptoms, retinal image quality for best vision and night vision, and retinal image quality for a range of focus depth. The multitask vision architectures is applied for determining a wavefront shape for an optimized vision correction, for specifying excessive aberrations in an eye, and for specifying quality of a vision product.

Abstract: A wavefront sensing system for measuring wave aberration of an eye comprises an illumination light source configured to produce a compact light source at the retina of the eye, a small opaque stop configured to block corneal reflection of the illumination light, a wavefront sensor configured to measure the outgoing wavefront originated from the compact light source at the retina. Measuring wave aberration of an eye can be improved by using a Hartmann-Shack sensor with a fixed, localized mark on the lenslet array for unique identification of each focus spot of the sensor to its corresponding lenslet, and by including a refractive correction module and a wavefront fusing algorithms for the determination of wave aberration of an at its far accommodation point. In an additional aspect, a wavefront sensing system is designed to provide more comprehensive diagnosis of refractive corrections by measuring light scattering in the eye as well as wavefront data of lenses used for refractive corrections.

Abstract: A multitask vision architecture is constructed based on multitask vision-metrics derived from wave aberration of the eye. The multitask vision metrics include at least one of the followings: vision clarity of eye that measures optical quality of an eye against those in a cohort of eyes with normal acuity, aberration-induced vision symptoms, retinal image quality for best vision and night vision, and retinal image quality for a range of focus depth. The multitask vision architectures is applied for determining a wavefront shape for an optimized vision correction, for specifying excessive aberrations in an eye, and for specifying quality of a vision product.

Abstract: Relative MTF scores for an eye are determined by obtaining at least one wave aberration of an eye, calculating at least one modulation transfer function from the wave aberration of the tested eye, specifying image quality of the eye using a relative MTF score system derived from the calculated modulation transfer function of the tested eye and a set of modulation transfer functions from a cohort of eyes with normal visual acuity. Methods for comparing image quality of different eyes under equal conditions and at different pupil sizes include comparing MTF of different eyes for best MTF in all pupil sizes and MTF of different eyes for night vision at a large pupil size that is different from eye to eye.

Abstract: Aberration-induced vision symptoms are determined by obtaining at least one wave aberration of an eye, calculating at least one point-spread function from the wave aberration, convolving the point-spread function of eye with at least one specially designed image for night vision diagnosis, and determining at least one aberration-induced vision symptom of the tested eye from the convolved images. The specially designed images are for vision diagnosis of aberration-induced glare, halo, ghost image, and starburst. The invention methods for specifying aberration-induced symptoms allow to find an optimized refractive corrections of defocus and astigmatism and to reduce vision symptoms caused by aberrations in the eye.