Results 41 to 50 of about 269,486 (164)
The effect of pterygium surgery on wavefront analysis
Advanced Biomedical Research, 2014 Background: Pterygium is a common disorder of the ocular surface. It causes vision impairment -usually irregular type astigmatism- through different mechanisms. In addition, it is believed that surgical excision of the pterygium improves visual problems.
Hasan Razmjoo +5 more
doaj +1 more source
Keratoplasty for keratoconus: advantages and disadvantages
Российский офтальмологический журнал, 2022 Keratoconus is a progressive bilateral corneal ectasia, accompanied by loss of vision due to high irregular astigmatism, which is the leading indication for corneal transplantation.
M. M. Bikbov +2 more
doaj +1 more source
JEADV Clinical Practice, EarlyView.ABSTRACT Oculocutaneous albinism (OCA) is a genetic disorder found worldwide, but its impact is particularly pronounced in the African continent. This results from both a higher prevalence and the persistent myths and superstitions surrounding the condition in many African communities.
Rebecca Donadoni +3 more
wiley +1 more source
Premium Intraocular Lens Selection in Patients With Glaucoma: A Clinical Review
Clinical &Experimental Ophthalmology, EarlyView.ABSTRACT Glaucoma frequently coexists with cataract, but glaucomatous functional loss, ocular‐surface disease, anatomical abnormalities, and treatment‐related refractive variability may reduce tolerance of premium intraocular lenses. This narrative review critically appraises evidence relevant to lens selection in glaucoma. Central visual‐field status,
Zhihao Liu +3 more
wiley +1 more source
Journal of Optometry, 2015 Purpose: To evaluate preliminarily the safety and efficacy of customized photorefractive keratectomy (PRK) to correct ametropia and irregular astigmatism after penetrating keratoplasty (PK).
Giuseppe De Rosa +5 more
doaj +1 more source
Elevated Nocturnal CO2 and Autonomic Dysfunction in Children With Down Syndrome
Journal of Intellectual Disability Research, EarlyView.ABSTRACT Background Sleep‐disordered breathing (SDB) frequently complicates Down syndrome (DS). Beyond upper airway obstruction, emerging evidence suggests an autonomic nervous system (ANS) dysfunction affecting CO2 regulation. The aim of this study was to investigate nocturnal gas exchanges in children with DS and compare them to what has been ...
Jessica Taytard +12 more
wiley +1 more source
, 2003 Purpose: To analyze corneal topographic data by Fourier analysis to determine differences in irregular astigmatism following spherical hyperopic correction by photorefractive keratectomy (PRK) or laser in situ keratomileusis (LASIK).
Hull, C C +5 more
core +1 more source
EXIT-chart aided near-capacity irregular bit-interleaved coded modulation design [PDF]
, 2009 A near-capacity irregular Bit-Interleaved Coded Modulation based Iterative Decoding (Ir-BICM-ID) aided scheme is proposed. The irregular design of the scheme pervades the three basic components of BICM-ID, namely the encoder, the unity-rate precoder and ...
Tee, Ronald Yee Siong +2 more
core +1 more source
Case of progressive hyperopia due to flattening of cornea
American Journal of Ophthalmology Case Reports, 2018 Purpose: To report a case that had a progressive decrease in the visual acuity caused by a progressive increase in the hyperopia due to a flattening of the cornea. Observations: A 50-year-old woman complained of decreased vision in both eyes. Her decimal
Hiromasa Hirai +3 more
doaj +1 more source
Persistent corneal epithelial defect associated with sleeping position: A case report
Indian Journal of Ophthalmology. Case Reports, 2023 Herein, we report a rare case of persistent corneal epithelial defect (PCED) in a 9-year-old child with floppy eyelid syndrome (FES) and abnormal sleeping position.
Yingsi Li +7 more
doaj +1 more source