Results 61 to 70 of about 13,606 (182)

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

Acta Ophthalmologica, Volume 104, Issue 5, Page e516-e529, August 2026.
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, Jithmi Weliwitage, Marie von Berg, Silvia Schrittenlocher, Simona Schlereth, Claus Cursiefen, Björn Bachmann   +6 more
wiley   +1 more source

Changes in choroidal and retinal thickness 6 months before and during 18 months of orthokeratology lens treatment in myopic children

Acta Ophthalmologica, Volume 104, Issue 5, Page e578-e589, August 2026.
Abstract Purpose To investigate changes in choroidal and retinal thickness before and during myopia control treatment with orthokeratology lenses (OKL) in myopic children. Methods This was a sub‐study of CONTROL and CONTROL2 studies. The present study was a 2‐year, prospective, single‐group interventional study consisting of a 6‐month pre‐treatment ...
P. O. Hansen, F. Møller, T. M. Jakobsen
wiley   +1 more source

N, S Co‐Doped Carbon Quantum Dots‐Riboflavin Composite Photosensitizers for Enhanced Iontophoresis‐Assisted Corneal Cross‐Linking

Advanced Science, Volume 13, Issue 42, 28 July 2026.
This study explores the use of N, S co‐doped carbon quantum dots (NS‐CQDs) as carriers for riboflavin, creating NS‐CQDs‐RF composite photosensitizers. These composites improve riboflavin absorption, enhance ROS generation efficiency, and preserve corneal epithelium integrity.
Tinghong Xu, Yong Liu, Wenjing Zhang, Qiuruo Jiang, Yi Jin, Liangzheng Lin, Lumeng Wang, Zhanhao Gu, Mimi Lin, Shihao Chen   +9 more
wiley   +1 more source

Mean posterior corneal power and astigmatism in normal versus keratoconic eyes

Journal of Ophthalmic & Vision Research, 2018
Purpose: To compare mean posterior corneal power and astigmatism in normal versus keratoconus affected eyes and determine the optimal cut-off points to maximize sensitivity and specificity in discriminating keratoconus from normal corneas.
Sepehr Feizi, Siamak Delfazayebaher, Mohammad Ali Javadi, Farid Karimian, Vahid Ownagh, Fatemeh Sadeghpour   +5 more
doaj   +1 more source

Association between hair cortisol levels and keratoconus: A prospective study.

PLoS ONE
IntroductionKeratoconus is a progressive corneal disorder characterized by corneal thinning often leading to significant visual impairment. Recent research suggests a potential role of cortisol in the development and progression of keratoconus.
Noor Alqudah, Nosayba Al-Azzam, Leen El Taani, Mohammad Al Qudah, Abdallah Sharayah, Rita A Al-Rihani   +5 more
doaj   +1 more source

Understanding cancer from the perspective of cellular adaptation to stressors for survival

Quantitative Biology, Volume 14, Issue 3, September 2026.
Zhenyu Huang, Xuechen Mu, Ying Xu
wiley   +1 more source

Revisiting keratoconus diagnosis and progression classification based on evaluation of corneal asymmetry indices, derived from Scheimpflug imaging in keratoconic and suspect cases

Clinical Ophthalmology, 2013
Anastasios John Kanellopoulos,1,2 George Asimellis1 1Laservision.gr Eye Institute, Athens, Greece; 2New York University School of Medicine, New York, NY, USA Purpose: To survey the standard keratoconus grading scale (Pentacam®-derived Amsler&ndash ...
Kanellopoulos AJ, Asimellis G
doaj  

Retinal nerve fibre layer and ganglion cell complex thickness in patients with keratoconus

African Vision and Eye Health, 2018
Background: Keratoconus, a corneal ectasia, is associated with corneal thinning and altered optical media. Consequently, assessment of the visual field, optic nerve head and intraocular pressure measurements may be challenging in patients with ...
Prianka Cuppusamy, Nokwanda Makhanya, Mbekezeli Methula, Kausar M. Essop, Duduzile Sibisi, Naseera Wohabally, Nonkululeko Gcabashe, Nishanee Rampersad   +7 more
doaj   +1 more source

Macular thicknesses in patients with keratoconus: An optical coherence tomography study

African Vision and Eye Health, 2019
Background: Keratoconus, a corneal ectasia associated with thickness and structural changes, has been reported to co-exist with posterior segment ocular conditions.
Sohani Deonarain, Azeezah Motala, Talent Mthembu, Nomfundo Nxele, Thabiso Phakathi, Nonkululeko Thwala, Nishanee Rampersad   +6 more
doaj   +1 more source

Challenges in Biometry and Intraocular Lens Power Calculations in Keratoconus: A Review

Diagnostics
Purpose: The purpose of this work was to conduct a comprehensive literature review of the challenges encountered in ocular biometry and intraocular lens (IOL) power calculations in patients with keratoconus undergoing cataract surgery and to evaluate the
Mayank A. Nanavaty
doaj   +1 more source