Results 61 to 70 of about 86,148 (299)

Deciphering the performance of different surface models for corneal topography

Ophthalmic and Physiological Optics, EarlyView.
Abstract Purpose To study the performance of different corneal surface models to be used for ray tracing. Models based on geometric surfaces and polynomial fits were compared and the differences discussed. Methods For this simulation study, five characteristic generic surface configurations were generated: (A) perfect biconic, (B) decentred biconic ...
Achim Langenbucher, Nóra Szentmáry, Alan Cayless, Peter Hoffmann, Jascha Wendelstein   +4 more
wiley   +1 more source

Trends in refractive surgery at an academic center: 2007-2009

BMC Ophthalmology, 2011
Background The United States officially entered a recession in December 2007, and it officially exited the recession in December 2009, according to the National Bureau of Economic Research.
Kuo Irene C
doaj   +1 more source

Hevin plays a pivotal role in corneal wound healing. [PDF]

PLoS ONE, 2013
BACKGROUND: Hevin is a matricellular protein involved in tissue repair and remodeling via interaction with the surrounding extracellular matrix (ECM) proteins.
Shyam S Chaurasia, Promoda R Perera, Rebekah Poh, Rayne R Lim, Tina T Wong, Jodhbir S Mehta   +5 more
doaj   +1 more source

Laser Machining by short and ultrashort pulses, state of the art and new opportunities in the age of the photons [PDF]

, 2002
An overview is given of the applications of short and ultrashort lasers in material processing. Shorter pulses reduce heat-affected damage of the material and opens new ways for nanometer accuracy.
A. Gillner, A. Ostendorf, Allen, Almond, Bachmann, Basting, Brunner, Chen, Corbett, D. Hoffmann, DeMaria, Du, Elliot, Fotakis, Galantucci, Geiger, Hellrung, Hentschel, J. Meijer, K. Du, Kidder, Klein, Klimentov, Kostrykin, Krausz, Lee, MacGeough, Masuzawa, Masuzawa, McClung, McKeown, Meijer, Merchant, Moore, Nolte, Ohmura, Ohmura, Otsu, R. Poprawe, Ready, Ready, Riccardi, Shirk, Spence, Stewen, Strickland, T. Masuzawa, Taniguchi, V.S. Kovalenko, W. Schulz, Windholz   +50 more
core   +3 more sources

Spatial and Diurnal Variations in Sodium Content Within Intervertebral Disc Tissue

JOR SPINE, Volume 8, Issue 3, September 2025.
Cycles of daily movement and nighttime relaxation create cycles in fixed charge density and tissue osmolarity in vivo. Previous measurements of these parameters have been limited by spatial resolution and an inability to measure in situ. This study develops and validates a novel application of laser ablation‐inductively coupled plasma‐mass spectrometry
Jordin T. Marshall, Anthony D. Lutton, Mark W. Grinstaff, John W. Olesik, Benjamin A. Walter   +4 more
wiley   +1 more source

Penetrating Keratoplasty after Excimer Laser Surgery

Siriraj Medical Journal, 2002
We present six patients who were referred after undergoing excimer laser surgery and subsequently required penetrating keratoplasty (PKP) to correct complications of the initial surgery.
Sabong Srivannaboon
doaj  

Trifocal diffractive intraocular lens implantation in patients after previous corneal refractive laser surgery for myopia

BMC Ophthalmology, 2020
Background With the difficulties in IOL power calculation and the potential side effects occurring postoperatively, multifocal IOL implantation after previous corneal refractive surgery are rarely reported especially for the trifocal IOL.
Qiu-Mei Li, Feng Wang, Zhe-Ming Wu, Zhen Liu, Chuan Zhan, Bing-Heng Chen, Jing Sima, Knut Stieger, Shao-Wei Li   +8 more
doaj   +1 more source

Visual outcomes of Femto-LASIK for correction of residual refractive error after corneal graft [PDF]

, 2013
To evaluate the outcomes of the Femto-LASIK method in the treatment of refractive errors following penetrating keratoplasty (PK) at the Persian Eye Clinic, Isfahan, Iran In a prospective, non-comparative case series, 34 consecutive symptomatic eyes of 34
Ghoreishi, Mohammad., Naderi Beni, Afsaneh., Naderi Beni, Zahra.   +2 more
core   +1 more source

Small incision lenticule extraction (SMILE) in the correction of myopic astigmatism: outcomes and limitations - an update

Eye and Vision, 2017
Small Incision Lenticule Extraction (SMILE) is a flap-free intrastromal technique for the correction of myopia and myopic astigmatism. To date, this technique lacks automated centration and cyclotorsion control, so several concerns have been raised ...
Jorge L. Alió del Barrio, Verónica Vargas, Olena Al-Shymali, Jorge L. Alió   +3 more
doaj   +1 more source

Role of Optical Coherence Tomography on Corneal Surface Laser Ablation [PDF]

, 2012
This paper focuses on reviewing the roles of optical coherence tomography (OCT) on corneal surface laser ablation procedures. OCT is an optical imaging modality that uses low-coherence interferometry to provide noninvasive cross-sectional imaging of ...
Kara-Junior, Newton, Moraes, Haroldo V., Santhiago, Marcony R., Ventura, Bruna V.   +3 more
core   +2 more sources