Results 31 to 40 of about 31,207 (301)

Subtle changes of the crystalline lens after cycloplegia: a retrospective study

open access: yesBMC Ophthalmology, 2021
Background The purpose of this study was to evaluate the shape of the crystalline lens in terms of biometry and diopters before and after cycloplegia using the CASIA2 swept-source (SS) optical coherence tomography (OCT) system on the anterior segment ...
Cheng Dai   +3 more
doaj   +1 more source

Lens aging: Effects of crystallins [PDF]

open access: yesBiochimica et Biophysica Acta (BBA) - General Subjects, 2009
The primary function of the eye lens is to focus light on the retina. The major proteins in the lens--alpha, beta, and gamma-crystallins--are constantly subjected to age-related changes such as oxidation, deamidation, truncation, glycation, and methylation. Such age-related modifications are cumulative and affect crystallin structure and function. With
K Krishna, Sharma, Puttur, Santhoshkumar
openaire   +2 more sources

Haze Estimation of Crystalline Lens by Contrast Sensitivity as a Function of Scattering Light Intensity

open access: yesi-Perception, 2011
Cataract is one of the most typical age-related eye diseases. As the cataract progresses, the crystalline lens becomes hazier and the visual ability deteriorates.
Nozomi Ohnaka
doaj   +1 more source

Age-related changes of the human ciliary muscle. A quantitative morphometric study

open access: yes, 1992
The age-related changes of the ciliary muscle of human eyes (33-87 years) were studied on histological meridional sections. Eighty-five melanoma eyes and 10 eyes of normal donors were investigated. The total area and the length of the muscle, the area of
Tamm, Svenja   +2 more
core   +1 more source

Research progress of lens zonules

open access: yesAdvances in Ophthalmology Practice and Research, 2023
Background: The lens zonule, a circumferential system of fibres connecting the ciliary body to the lens, is responsible for centration of the lens.
Yingying Pan, Zhaoqiang Liu, Han Zhang
doaj   +1 more source

Crystalline Lens Subluxation Following Blunt Head Trauma

open access: yesActa Médica Portuguesa, 2020
N/a.
Lucas Koenig Olm   +2 more
doaj   +1 more source

Computational simulation of aqueous humour dynamics in the presence of a posterior-chamber versus iris-fixed phakic intraocular lens. [PDF]

open access: yesPLoS ONE, 2018
PURPOSE:To compare aqueous humour (AH) dynamics in the presence of a precrystalline (Implantable Collamer Lens®; ICL) or iris-fixed (Artiflex®) phakic intraocular lens (PIOL).
José Ignacio Fernández-Vigo   +8 more
doaj   +1 more source

The Influence of extracellular matrix on lens epithelial cell viability [PDF]

open access: yes, 2006
Posterior capsular opacification is the main complication of cataract surgery and results from the proliferation, migration and differentiation of lens epithelial cells remaining in the capsular bag. To better understand this pathological cell behaviour,
Frederique, M D Tholozan   +1 more
core  

Treatment Approach to Small Inadvertent Injury of the Crystalline Lens Anterior Capsule During Iridodialysis Repair Surgery

open access: yes, 2013
A 22-year-old man presented to our ophthalmology department with photophobia. On ophthalmic examination, iridodialysis secondary to blunt trauma that occurred 5 years ago was diagnosed.
Fazıl Cüneyt Erdurman   +3 more
core   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

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