Ocular Refraction at Birth and Its Development During the First Year of Life in a Large Cohort of Babies in a Single Center in Northern Italy [PDF]
, 2020 The purpose of this study was to investigate refraction at birth and during the first year of life in a large cohort of babies born in a single center in Northern Italy.
Bartollino S. +7 more
core +1 more source
Type of residual astigmatism and uncorrected visual acuity in pseudophakic eyes
Scientific Reports, 2022 It is difficult to assess the pure impact of the type of residual astigmatism (with-the-rule; WTR, against-the-rule; ATR, and oblique astigmatism) on uncorrected distance visual acuity (UDVA) in pseudophakic eyes due to different age distribution of ...
Yumi Hasegawa +3 more
doaj +1 more source
BMC Ophthalmology, 2020 Background China has been undergoing dramatic economic development, accompanied by increased education load on the young children. This study is to investigate the prevalence, type, severity, and associated risk factors of astigmatism in school students ...
Jianyong Wang +7 more
doaj +1 more source
A Reciprocal Transformation for the Constant Astigmatism Equation [PDF]
, 2014 We introduce a nonlocal transformation to generate exact solutions of the constant astigmatism equation $z_{yy} + (1/z)_{xx} + 2 = 0$. The transformation is related to the special case of the famous B\"acklund transformation of the sine-Gordon equation ...
Hlaváč, Adam, Marvan, Michal
core +3 more sources
Distribution of posterior corneal astigmatism according to axis orientation of anterior corneal astigmatism. [PDF]
PLoS ONE, 2015 To investigate the distribution of posterior corneal astigmatism in eyes with with-the-rule (WTR) and against-the-rule (ATR) anterior corneal astigmatism.We retrospectively examined six hundred eight eyes of 608 healthy subjects (275 men and 333 women ...
Toshiyuki Miyake +2 more
doaj +1 more source
Comparison of corneal irregular astigmatism by the type of corneal regular astigmatism
Scientific Reports, 2021 We investigated the relation between corneal regular and irregular astigmatism in normal human eyes. In 951 eyes of 951 patients, corneal irregular astigmatism, such as asymmetry and higher-order irregularity components, was calculated using the Fourier ...
Yuta Ueno +5 more
doaj +1 more source
Holographic aberration correction: optimising the stiffness of an optical trap deep in the sample [PDF]
, 2011 We investigate the effects of 1st order spherical aberration and defocus upon the stiffness of an optical trap tens of μm into the sample. We control both these aberrations with a spatial light modulator. The key to maintain optimum trap stiffness over a
Bowman +22 more
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Observation of cone and rod photoreceptors in normal subjects and patients using a new generation adaptive optics scanning laser ophthalmoscope. [PDF]
, 2011 We demonstrate the capability of a new generation adaptive optics scanning laser ophthalmoscope (AOSLO) to resolve cones and rods in normal subjects, and confirm our findings by comparing cone and rod spacing with published histology measurements.
Duncan, Jacque L +3 more
core +3 more sources
BMC Ophthalmology, 2020 Background To elucidate whether eyelid squinting improves near and distance vision in against-the-rule (ATR) and with-the-rule (WTR) simple myopic astigmatism in pseudophakic eyes. Methods A refraction-model eye was mounted on a wavefront analyzer.
Jay Won Rhim +5 more
doaj +1 more source
Experimental test of higher-order Laguerre–Gauss modes in the 10 m Glasgow prototype interferometer [PDF]
, 2013 Brownian noise of dielectric mirror coatings is expected to be one of the limiting noise sources, at the peak sensitivity, of next generation ground based interferometric gravitational wave (GW) detectors.
Barr, B.W. +10 more
core +1 more source