Results 21 to 30 of about 93,210 (330)
Early Astigmatism Can Alter Myopia Development in Chickens
Investigative Ophthalmology and Visual Science, 2021 Purpose To determine the effects of optically imposed astigmatism on myopia development in chickens. Methods Chicks were randomly assigned to wear either spherical (−10D, “LIM”, n = 14) or sphero-cylindrical lenses (n ≥ 19 in each group) monocularly for ...
S. Vyas, C. Kee
semanticscholar +1 more source
Scientific Reports, 2021 To determine the distribution of ocular residual astigmatism (ORA) in astigmatic eyes and the influence on the anterior corneal (ACA) and refractive astigmatism (RA). A total of 165 children met the inclusion criteria.
Jian Lin
semanticscholar +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
Long-term changes in the refractive effect of a toric intraocular lens on astigmatism correction
Graefe's Archive for Clinical and Experimental Ophthalmology, 2021 To examine the long-term changes in the astigmatism-correcting effect of a toric intraocular lens (IOL) after stabilization of surgically induced astigmatic changes due to cataract surgery.
Ken Hayashi +3 more
semanticscholar +1 more source
Clinical Ophthalmology, 2018 David F Anderson,1 Mukesh Dhariwal,2 Christine Bouchet,3 Michael S Keith3 1University Hospital Southampton, NHS Foundation Trust, Southampton, UK; 2Novartis Ireland Ltd., Dublin, Ireland; 3Alcon Laboratories Inc., Fort Worth, TX, USA Purpose: To ...
Anderson DF +3 more
doaj +2 more sources
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 +1 more source
Factors associated with corneal astigmatism change after ptosis surgery [PDF]
International Journal of Ophthalmology, 2022 AIM: To evaluate the predictive factors of postoperative corneal astigmatism change in ptosis patients who underwent ptosis surgical repair. METHODS: Patients who underwent levator resection at Oculoplastic service of the Department of Ophthalmology ...
Natpatsorn Mongkolareepong +2 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
core +1 more source
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
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