Results 21 to 30 of about 13,495,511 (263)
Indian Journal of Ophthalmology, 2016 Background: This study evaluated the visual function after implantation of a multifocal toric intraocular lenses (IOLs). Materials and Methods: This study involved 10 eyes from eight cataract patients with corneal astigmatism of 1.0 diopter (D) or higher
Xiangfei Chen +5 more
doaj +1 more source
Measurement of the peripheral aberrations of human eyes: A comprehensive review
Nanotechnology and Precision Engineering, 2020 It has been nearly 50 years since the first glimpse of the relationship between myopia and peripheral refractive errors. According to experiments on both animals and humans, the eyes with hyperopic peripheral vision appear to be at higher risk of ...
Yanbo Zhao, Fengzhou Fang
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iTrace aberrometry - Identifying occult imperfections in the visual system
Kerala Journal of Ophthalmology, 2021 Visual acuity is the sum of qualitative and quantitative factors. A combination of both determines the final visual acuity. The quality of vision (QoV) can be easily assessed by documenting objectively the higher-order aberrations or by using subjective ...
Bharat Gurnani, Kirandeep Kaur
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Third-order aberrations of pseudophakic eyes
, 1989 The aberrations of pseudophakic eyes were analysed by third-order theory assuming thin intraocular lenses. Third-order aberrations with spherical surfaced lenses are quadratic functions of lens shape.
Atchison, David A.
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Analysis of higher-order aberrations in a large\ud clinical population [PDF]
, 2012 Purpose: To use a large wavefront database of a clinical population to investigate relationships between refractions and higher order aberrations and between aberrations of right and left eyes.\ud \ud Methods: Third and fourth-order aberration ...
Atchison, David A., Hartwig, Andreas
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Magnetic Fluid Deformable Mirror with a Two-Layer Layout of Actuators †
Micromachines, 2017 In this paper, a new type of magnetic fluid deformable mirror (MFDM) with a two-layer layout of actuators is proposed to improve the correction performance for full-order aberrations with a high spatial resolution. The shape of the magnetic fluid surface
Zhizheng Wu +5 more
doaj +1 more source
Measuring higher order optical aberrations of the human eye: techniques and applications
Brazilian Journal of Medical and Biological Research, 2002 In the present paper we discuss the development of "wave-front", an instrument for determining the lower and higher optical aberrations of the human eye.
L. Alberto V. Carvalho +2 more
doaj +1 more source
PLoS ONE, 2023 PurposeTo observe changes in retinal refraction difference values (RDV) and aberrations after small incision lenticule extraction (SMILE) surgery and evaluate their correlations.MethodsThis study recruited 112 patients (112 eyes) who underwent SMILE for ...
Yuqin Du +4 more
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Effect of Lower-order Aberrations and Higher-order Aberrations in Laser Refractive Surgery Patients
The Korean Journal of Vision Science, 2019 Purpose : To investigate the effect of lower-order aberrations (LOAs) and higher-order aberrations (HOAs) in laser refractive surgery patients compared to the emmetropes. Methods : 118 eyes of refractive surgery subjects and 36 eyes of emmetropes were enrolled.
openaire +1 more source
Higher order aberrations across the horizontal visual field
, 2006 Errata: Higher order aberrations across the horizontal visual ...
Atchison, David A.
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