Results 61 to 70 of about 77,514 (194)

Theranostic‐Guided UV‐A Light Corneal Wavefront Photo‐Reshaping for Presbyopia Correction: A Preclinical Study

Journal of Biophotonics, Volume 18, Issue 2, February 2025.
This study investigated a theranostic‐guided UV‐A light corneal wavefront photo‐reshaping technique in human eyes using an integrated system for spatially patterned delivery of riboflavin. Results showed consistent corneal steepening, reduced spherical aberration, and smooth wavefront shaping, with unchanged optical quality, suggesting potential ...
Marco Lombardo, Giuseppe Massimo Bernava, Sebastiano Serrao, Giuseppe Lombardo   +3 more
wiley   +1 more source

iTrace aberrometry - Identifying occult imperfections in the visual system

Kerala Journal of Ophthalmology, 2021
Visual acuity is the sum of qualitative and quantitative factors. A combination of both determines the final visual acuity. The quality of vision (QoV) can be easily assessed by documenting objectively the higher-order aberrations or by using subjective ...
Bharat Gurnani, Kirandeep Kaur
doaj   +1 more source

Non‐orthogonal spectacle correction for irregular astigmatism

Ophthalmic and Physiological Optics, Volume 45, Issue 1, Page 210-220, January 2025.
Abstract Purpose To investigate the potential improvement in visual acuity and subjective perception of image quality in patients with keratoconus using non‐orthogonal correction (NOC) cylinder trial lenses where the steep and flat power meridians are set at angles less or greater than 90°. Methods A set of NOC plano/cylindrical trial lenses, where the
Adela Hulpus, Ritchie Henry, Lynn White, Bernardo T. Lopes, Vito Romano, Ahmed Abass   +5 more
wiley   +1 more source

Evaluation of Visual Acuity, Postoperative Refractive Error, and Optical Aberrations in Patients With Previous Corneal Surgery and AcrySof IQ Vivity Intraocular Lens Implantation

Journal of Ophthalmology, Volume 2025, Issue 1, 2025.
Purpose To assess the visual outcomes, refractive accuracy, and visual disturbances in patients with a history of myopic laser‐assisted in situ keratomileusis (LASIK) who underwent cataract surgery with extended depth of focus intraocular lens (IOL).
Miguel Srur, Edison Villagran, Christian Segovia, Cristian Cartes, Maja Bohac   +4 more
wiley   +1 more source

Особливості реорганізації структур рогівки кролів з її хімічним опіком на тлі мерказоліл-індукованого гіпотирозу = Peculiarities of reorganization of the rabbits’ corneal structure with its chemical burn at the background of merkazolil-induced hypothyroidism [PDF]

, 2014
Savchuk Z. L., Klishch I. M., Herasymiuk I. Ye. Особливості реорганізації структур рогівки кролів з її хімічним опіком на тлі мерказоліл-індукованого гіпотирозу = Peculiarities of reorganization of the rabbits’ corneal structure with its chemical burn at
Savchuk, Z. L., Herasymiuk, I. Ye., Klishch, I. M.   +2 more
core   +1 more source

Introducing Dynamic Stimulation Aberrometry

, 2023
Purpose: The objective measurement of binocular accommodation remains a challenge. The dynamic stimulation aberrometry (DSA) system uses wavefront measurements to dynamically assess accommodation.
Yvonne Heggemann, MSc, Maximilian Hammer, Gerd U. Auffarth, MD, PhD   +2 more
core   +1 more source

Factors Influencing Astigmatic Correction Using Small‐Incision Lenticule Extraction: A Systematic Review and Meta‐Analysis

Journal of Ophthalmology, Volume 2025, Issue 1, 2025.
Purpose To systematically review SMILE‐based astigmatism correction and influencing factors. Methods Literature was screened across eight databases. Pre‐ and post‐SMILE cylinder, difference vector (DV), correction index (CI), magnitude of error (ME), angle of error (AE), and index of success (IOS) were compared.
Shuangcheng Li, Xuan Chen, Jiaxin Song, Yimei Han, Yan Wang, Shengjie Li   +5 more
wiley   +1 more source

OPD scan III accuracy: Topographic and aberrometric indices after accelerated corneal cross-linking

Journal of Current Ophthalmology, 2018
Purpose: To determine topographic and aberrometric changes after accelerated cross-linking (ACXL; 18 mW/cm2 for 5 min) as measured with OPD Scan III (Nidek Inc., Tokyo, Japan) and their repeatability in patients with mild and moderate keratoconus (KCN ...
Soheila Asgari, Hassan Hashemi
doaj   +1 more source

Calculation of Toric Intraocular Lens Power with the Barrett Calculator and Data from Three Keratometers

Journal of Tropical Medicine, 2021
Aim. To investigate the interdevice agreement for differences in toric power calculated using data on anterior corneal astigmatism obtained with corneal topography/ray-tracing aberrometry (iTrace), partial coherence interferometry (IOLMaster 500), and ...
Jing Dong, Yaqin Zhang, Xiaogang Wang
doaj   +1 more source

Corneal nerves in health and disease [PDF]

, 2019
The cornea is the most sensitive structure in the human body. Corneal nerves adapt to maintain transparency and contribute to corneal health by mediating tear secretion and protective reflexes and provide trophic support to epithelial and stromal cells ...
Mouhamed A. Al-Aqaba, Virinder K. Dhillon, Harminder S. Dua, Al-Aqaba, Mouhamed A., Said, Dalia G., Dua, Harminder S., Dalia G. Said, Imran Mohammed, Dhillon, Virinder K., Al Aqaba, Mouhamed A., Mohammed, Imran   +10 more
core   +1 more source