Results 31 to 40 of about 21,095 (219)

Measured Corneal Astigmatism Versus Pseudophakic Predicted Refractive Astigmatism in Cataract Surgery Candidates

open access: yes, 2022
PURPOSE: To compare standard and total corneal astigmatism measurements to the predicted pseudophakic (nontoric) refractive astigmatism in candidates for cataract surgery. DESIGN: A retrospective, cross-sectional study.
Abulafia, Adi   +7 more
core   +2 more sources

Regular and irregular astigmatism of bullous keratopathy using Fourier harmonic analysis with anterior segment optical coherence tomography

open access: yesScientific Reports, 2022
Bullous keratopathy (BK) is known to present with corneal edema and Descemet's folds, which can cause corneal astigmatism. However, no report quantitatively evaluated BK astigmatism by separating it into regular and irregular astigmatism.
Lily Wei Chen   +9 more
doaj   +1 more source

Effect of Chalazion on Corneal Astigmatism

open access: yes, 2023
A common eyelid disease chalazion causes eye morbidity due to inflammation and cosmetic disfigurement.  Important factors in corneal refractive surgery, intraocular lens power calculations for cataract surgery and visual acuity assessments are ...
G, Taarika   +2 more
core   +1 more source

Evaluation of interface quality in organ-cultured lamellar corneal transplants

open access: yes, 2012
Background: With increasing numbers of lamellar keratoplasties, eye banks are challenged to deliver precut lamellar donor tissue. In Europe, the most common technique of corneal storage is organ culture which requires a deswelling process before surgical
Kohnen, Thomas   +7 more
core   +1 more source

Toric intraocular lens implantation in cataract patients with corneal opacity

open access: yesBMC Ophthalmology, 2020
Background To evaluate the effect of toric intraocular lens implantation in cataract patient with corneal opacity and high astigmatism. Methods Thirty-one eyes of 31 patients who underwent cataract surgery with toric intraocular lens implantation were ...
Ho Ra   +4 more
doaj   +1 more source

Corneal Astigmatism in Cataract

open access: yesJournal of the College of Physicians and Surgeons Pakistan
To measure preoperative corneal astigmatism in cataract patients.Descriptive study. Place and Duration of the Study: Mughal Eye Hospital, Lahore, from 2018 to 2022.The amount of preoperative corneal astigmatism was noted in cataract patients. Inclusion criteria included cataract patients above 16 years of age.
Khawaja Khalid, Shoaib, Tariq, Shakoor
openaire   +2 more sources

Postoperative Corneal and Surgically Induced Astigmatism following Superior Approach Manual Small Incision Cataract Surgery in Patients with Preoperative Against-the-Rule Astigmatism

open access: yesJournal of Ophthalmology, 2016
The aim of the study was to report postoperative corneal and surgically induced astigmatism (SIA) in patients with preoperative against-the-rule (ATR) astigmatism who underwent superior approach manual small incision cataract surgery (MSICS).
Edmund Arthur   +6 more
doaj   +1 more source

Corneal power modelling with OCT data – Thin and thick lens paraxial models versus raytracing

open access: yesActa Ophthalmologica, EarlyView.
Abstract Background Evaluating keratometric power with Zeiss index (PKZ), paraxial thick cornea power (Gullstrand [PG]) and power referenced to the front (PFV) and back vertex plane (PBV) and raytracing power (PR), and modelling the deviation from PKZ with a multivariable linear prediction model.
Achim Langenbucher   +4 more
wiley   +1 more source

Astigmatic changes after Descemet membrane endothelial keratoplasty (DMEK) in decompensated penetrating keratoplasty grafts

open access: yesActa Ophthalmologica, EarlyView.
Abstract Purpose To evaluate the surgery‐induced changes of astigmatism after Descemet membrane endothelial keratoplasty (DMEK) in eyes with failed previous penetrating keratoplasty (PK). Design Retrospective, interventional cohort study based on prospective DMEK database.
Florian Thomas Steinberg   +6 more
wiley   +1 more source

Correlations of Corneal Spherical Aberration with Astigmatism and Axial Length in Cataract Patients

open access: yesJournal of Ophthalmology, 2019
Purpose. To clarify the distribution of corneal spherical aberrations (SAs) in cataract patients with different corneal astigmatism and axial length. Setting. Department of Ophthalmology and Vision Science of the Eye and ENT Hospital of Fudan University,
Min Zhang   +5 more
doaj   +1 more source

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