Higher order aberrations of the eye: Part one
نویسندگان
چکیده
منابع مشابه
The Lower- and Higher-Order Aberrations of the Eye
Keratoconus causes a reduction in the optical quality of the eye as a result of corneal distortion, corneal scarring and higher-order aberrations. The correction of these optical aberrations would significantly improve the visual performance of keratoconic eyes. However the first step would be to measure the optical flaws in keratoconus accurately, which in itself presents a challenge. This pap...
متن کاملVisual benefit of correcting higher order aberrations of the eye.
There is currently considerable debate concerning the visual impact of correcting the higher order aberrations of the eye. We describe new measurements of a large population of human eyes and compute the visual benefit of correcting higher order aberrations. We also describe the increase in contrast sensitivity when higher order aberrations are corrected with an adaptive optics system. All thes...
متن کاملHigher order monochromatic aberrations of the human infant eye.
The monochromatic optical aberrations of the eye degrade retinal image quality. Any significant aberrations during postnatal development could contribute to infants' immature visual performance and provide signals for the control of eye growth. Aberrations of human infant eyes from 5 to 7 weeks old were compared with those of adult subjects using a model of an adultlike infant eye that accounte...
متن کاملEffect of decentration of wavefront-corrected intraocular lenses on the higher-order aberrations of the eye.
OBJECTIVE To evaluate the theoretical effect of decentration of aspherical intraocular lenses (IOLs) and wavefront-corrected IOLs up to the sixth order on higher-order aberrations (HOAs) (third through sixth order) of the eye. METHODS An aspherical IOL with HOAs of fourth-order spherical aberrations only (-0.287 microm with a 6-mm pupil) and a wavefront-corrected IOL with HOAs of equal magnit...
متن کاملCoherence function analysis of the higher-order aberrations of the human eye.
We measured the wavefront aberrations of the eyes of five subjects with a Shack-Hartmann sensor sampling at 21.2 Hz and decomposed the measurements into Zernike aberration terms up to and including the fifth radial order. Coherence function analysis was used to determine the common frequency components between the aberrations within subjects. We found the results to be highly subject dependent....
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ژورنال
عنوان ژورنال: African Vision and Eye Health
سال: 2016
ISSN: 2410-1516,2413-3183
DOI: 10.4102/aveh.v75i1.321