Results 41 to 50 of about 1,816,559 (247)

Comparison of Pre and Post LASIK Corneal Thickness by Orbscan, Anterior Segment Optical Coherence Tomography, Specular Microscopy, Ultrasonic Pachymetry

Delhi Journal of Ophthalmology, 2015
Background : To measure corneal thickness by Orbscan, Anterior Segment Optical Coherence Tomography, Specular microscopy, Ultrasonic pachymetry Pre and Post LASIK and to compare the four techniques.
Metu Rajput, Charu Tandon, Uma Sridhar
doaj   +1 more source

Lightweight Carbon Fiber Mirrors for Solar Concentrator Applications [PDF]

, 2017
Lightweight parabolic mirrors for solar concentrators have been fabricated using carbon fiber reinforced polymer (CFRP) and a nanometer scale optical surface smoothing technique.
Atwater, Harry A., Espinet-González, Pilar, Huang, Jing-Shun, Kelzenberg, Michael D., Leclerc, Christophe, Naqavi, Ali, Pellegrino, Sergio, Vaidya, Nina, Vinogradova, Tatiana G., Warmann, Emily C.   +9 more
core   +2 more sources

A study of corneal endothelial changes in soft contact lens wearers using non-contact specular microscopy

Medical Journal of Dr. D.Y. Patil University, 2013
Aim: To study the corneal endothelial changes after soft contact lens wear, to correlate these changes with the duration of soft contact lens wear, and to study the pattern of use and preferences of contact lens among young adults. Materials and Methods:
Renu M Magdum, Neha Mutha, Rupali Maheshgauri   +2 more
doaj   +1 more source

Corneal endothelial cells changes in different stages of Keratoconus: a multi-Centre clinical study

BMC Ophthalmology, 2021
Purpose To assess the corneal endothelial cells morphology and count in keratoconus patients and their correlation with different stages of keratoconus. Methods Prospective non randomized multi-centric clinical study included 150 eyes of 150 keratoconus ...
Ahmed Elmassry, Ahmed Osman, Moataz Sabry, Mohamed Elmassry, Mai Katkat, Mohamed Yousry Hatata, Mohamed El-Kateb   +6 more
doaj   +1 more source

Better 3D Inspection with Structured Illumination Part I: Signal Formation and Precision

, 2015
For quality control in the factory, 3D-metrology faces increasing demands for high precision and for more space-bandwidth-speed-product SBSP (number of 3D-points/sec). As a potential solution, we will discuss Structured-Illumination Microscopy (SIM).
Häusler, Gerd, Kessel, Alexander, Yang, Zheng   +2 more
core   +1 more source

Descemet stripping only for Descemet's membrane detachment and sectoral corneal edema

American Journal of Ophthalmology Case Reports, 2023
Purpose: To describe a case of corneal decompensation in the setting of a Descemet's membrane detachment that developed following aborted Hydrus minimally invasive glaucoma surgery (MIGS) that was successfully treated with a Descemet's stripping only ...
Nergis C. Khan, Charles C. Lin
doaj   +1 more source

X-ray method to study temperature-dependent stripe domains in MnAs/GaAs(001)

, 2004
MnAs films grown on GaAs (001) exhibit a progressive transition between hexagonal (ferromagnetic) and orthorhombic (paramagnetic) phases at wide temperature range instead of abrupt transition during the first-order phase transition.
Coelho, L. N., Daweritz, L., Iikawa, F., Magalhaes-Paniago, R., Neves, B. R. A., Sacchi, M., Spezzani, C., Westfahl Jr., H.   +7 more
core   +1 more source

Morphological Changes of Human Corneal Endothelial Cells after Rho-Associated Kinase Inhibitor Eye Drop (Ripasudil) Administration: A Prospective Open-Label Clinical Study.

PLoS ONE, 2015
PurposeTo investigate the effect and safety of a selective Rho kinase inhibitor, ripasudil 0.4% eye drops, on corneal endothelial cells of healthy subjects.DesignProspective, interventional case series.MethodsIn this study, 6 healthy subjects were ...
Hiroko Nakagawa, Noriko Koizumi, Naoki Okumura, Hideki Suganami, Shigeru Kinoshita   +4 more
doaj   +1 more source

Corneal endothelial changes after subscleral trabeculectomy with mitomycin-C

Delta Journal of Ophthalmology, 2019
Background Antimetabolites have been proposed to increase the success rate and reduce fibrosis associated with filtering surgery. However, they have cytotoxic effect on corneal endothelial cells.
Faried M Wagdy, Adel G Zaky, Sara N.A Gohar   +2 more
doaj   +1 more source

Structural dynamics of surfaces by ultrafast electron crystallography: Experimental and multiple scattering theory [PDF]

, 2011
Recent studies in ultrafast electron crystallography (UEC) using a reflection diffraction geometry have enabled the investigation of a wide range of phenomena on the femtosecond and picosecond time scales.
Liang, Wenxi, Schäfer, Sascha, Zewail, Ahmed H.   +2 more
core   +1 more source