Results 91 to 100 of about 77,514 (194)

The Effect of Ptosis on Cataract Surgical Planning

Case Reports in Ophthalmology, 2015
Purpose: To describe a patient complaining of ‘ghosting' and ‘shadowing' after bilateral, sequential cataract extraction with toric intraocular lens (IOL) implantation who was found to have significant eyelid ptosis.
Irene C. Kuo
doaj   +1 more source

Molecular Pathogenesis of Corneal Dystrophies: Schnyder Dystrophy and Granular Corneal Dystrophy type 2

, 2015
The International Committee for Classification of Corneal Dystrophies (IC3D) provides updated data to ophthalmologists by incorporating traditional definitions of corneal dystrophies with new genetic, clinical, and pathologic information. Recent advances
최승일, 이훈, 김응권
core   +1 more source

Evaluation of Corneal Higher-Order Aberrations by Scheimpflug–Placido Topography in Patients with Different Refractive Errors: A Retrospective Observational Study

Journal of Ophthalmology, 2019
Purpose. To report the characteristics of anterior and posterior corneal high-order aberrations in patients with different refractive errors. Setting. This study was conducted at Sohag Refractive Center, Sohag, Egypt. Design.
Mohamed Anbar, Engy Mohamed Mostafa, Ashraf Mostafa Elhawary, Islam Awny, Mahmoud Mohamed Farouk, Amr Mounir   +5 more
doaj   +1 more source

Refractive Prediction Accuracy Using Intraoperative Aberrometry versus Barrett True-K Formula Following Corneal Refractive Surgery

Clinical Ophthalmology
To compare the refractive prediction accuracy of the Optiwave Refractive Analysis (ORA) SYSTEM with the Barrett True-K (BTK) formula in calculating intraocular lens (IOL) power in eyes that underwent cataract surgery after previous myopic photorefractive keratectomy (PRK) or laser-assisted in situ keratomileusis (LASIK).This retrospective study ...
Nicole Fram, John Davidson, Xiaolin Gu, Raiju Babu, Michael Breen   +4 more
openaire   +4 more sources

Topography-guided photorefractive keratectomy combined with accelerated corneal collagen cross-linking versus cross-linking alone for progressive keratoconus: a long-term prospective cohort study

Frontiers in Medicine
PurposeTo comprehensively compare the long-term outcome of the combined topography guided photorefractive keratectomy (TG-PRK) with accelerated corneal cross-linking (ACXL) and ACXL alone in eyes with progressive keratoconus.
Zhihao Dai, Zhihao Dai, Zhihao Dai, Ziyuan Liu, Ziyuan Liu, Ziyuan Liu, Yu Zhang, Yu Zhang, Yu Zhang, Yufei Yuan, Yufei Yuan, Yufei Yuan, Yan Liu, Yan Liu, Yan Liu, Yuexin Wang, Yuexin Wang, Yuexin Wang, Shuo Yu, Shuo Yu, Shuo Yu, Yueguo Chen, Yueguo Chen, Yueguo Chen   +23 more
doaj   +1 more source

Anterior corneal, posterior corneal, and lenticular contributions to ocular aberrations [PDF]

, 2016
Purpose: To determine the corneal surfaces and lens contributions to ocular aberrations.\ud \ud Methods: There were 61 healthy participants with ages ranging from 20 to 55 years and refractions –8.25 D to +3.25 D.
Mathur, Ankit, Lister, Lucas J., Atchison, David A., Rozema, Jos, Suheimat, Marwan   +4 more
core   +1 more source

Assessment of the corneal high-order aberration changes after pterygium surgery

Therapeutic Advances in Ophthalmology
Purpose: Corneal high-order aberrations due to pterygium have a significant impact on patients’ visual quality. This study aims to assess changes in corneal high-order aberrations following pterygium surgery.
Anjana Sapkota, Meenu Chaudhary, Sanjeeta Sitaula, Pragati Gautam   +3 more
doaj   +1 more source

Longitudinal study on ocular manifestations in a cohort of patients with Fabry disease.

PLoS ONE, 2019
PURPOSE:This study aims to assess the evolution of ocular manifestations in a cohort of Fabry patients. METHODS:This is a prospective observational study conducted from 2013 to 2017 (5 consecutive exams).
Langis Michaud
doaj   +1 more source

Agreement of Corneal Aberrometry Between a New Pyramid Wavefront Aberrometer and a Scheimpflug-Based System

Abstract Purpose: To compare corneal aberrometry between Pentacam HR, a Scheimpflug-based imaging system, and Peramis, an aberrometer that combines a pyramidal wavefront sensor with Placido-disk topography. Methods: Bilateral eyes of 111 healthy participants were included.
Armin Doostparast, Maryam Ghandhari, Amir Hossein Khosronejad, Mohammad Mirzaei, Mohammadreza Ghandhari, Farbod Semnani, Alireza Eslampoor   +6 more
openaire   +1 more source

Corneal Densitometry in Keratoconus

, 2014
Purpose: The aim of this study was to compare corneal densitometry measured by Scheimpflug tomography in normal and keratoconic eyes and to assess the differences in densitometry values among the stages of keratoconus.Methods: Keratoconic and normal ...
Lopes, Bernardo [UNIFESP], Ambrosio, Renato [UNIFESP], Ramos, Isaac   +2 more
core   +1 more source