نتایج جستجو برای: laser assisted subepithelial keratectomy

تعداد نتایج: 299731  

2011
Sung Joon Park Yoon Soo Jang Tae Hyuk Koh Young A Kwon Sang Wroul Song

This research focuses on four cases of patients having undergone eximer laser photorefractive surgery who were diagnosed with adenoviral keratoconjunctivitis during the postoperative period and who later developed epidemic keratoconjunctivitis (EKC)-like keratitis. Two of the patients had undergone laser-assisted subepithelial keratectomy (LASEK), one had undergone laser in situ keratomileusis ...

Journal: :Optics express 2009
P Zakharov A C Völker M T Wyss F Haiss N Calcinaghi C Zunzunegui A Buck F Scheffold B Weber

Laser speckle imaging (LSI) based on the speckle contrast analysis is a simple and robust technique for imaging of heterogeneous dynamics. LSI finds frequent application for dynamical mapping of cerebral blood flow, as it features high spatial and temporal resolution. However, the quantitative interpretation of the acquired data is not straightforward for the common case of a speckle field form...

Journal: :Applied optics 2005
Shuai Yuan Anna Devor David A Boas Andrew K Dunn

Laser speckle contrast imaging is becoming an established method for full-field imaging of cerebral blood flow dynamics in animal models. The sensitivity and noise in the measurement of blood flow changes depend on the camera exposure time. The relation among sensitivity, noise, and camera exposure time was investigated experimentally by imaging the speckle contrast changes in the brain after e...

Journal: :Journal of refractive surgery 2011
Shi-hao Chen Yi-fan Feng Aleksandar Stojanovic Qin-mei Wang

PURPOSE To evaluate the current clinical evidence of safety and efficacy of intraoperative topical application of 0.02% mitomycin C (MMC) used for up to 2 minutes after surface ablation for correction of myopia. METHODS A comprehensive literature search was conducted of Cochrane Library, MEDLINE, and EMBASE to identify relevant trials comparing surface ablation for correction of myopia with a...

2015
Valleh Sajjadi Mohammad Ghoreishi Ebrahim Jafarzadehpour

To compare the refractive and visual outcomes and higher order aberrations in patients with low to moderate myopia who underwent customized photorefractive keratectomy (PRK) or femtosecond laser in situ keratomileusis (Femto-LASIK) this research performed. This study includes data of 120 consecutive eyes of 60 patients with myopia between -3.00 D and -7.00 D with or without astigmatism in two s...

2010
Jae-Hyung Kim Jooeun Lee Jae Yong Kim Hungwon Tchah

PURPOSE To compare early postoperative pain and visual outcomes after epipolis-laser in situ keratomileusis (epi-LASIK) and photorefractive keratectomy (PRK) in the treatment of myopia. METHODS A retrospective chart review was designed and included 49 eyes in 30 patients who underwent epi-LASIK and 54 eyes in 29 patients who underwent PRK. During the early postoperative period (days 1 to 5), ...

2012
Majid Moshirfar Erik Anderson Maylon Hsu Joseph M. Armenia Mark D. Mifflin

PURPOSE To assess the regression rate of conductive keratoplasty (CK) in patients with or without previous laser-assisted in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK). SETTING University of Utah, Medical School, John A. Moran Eye Center, Salt Lake City, Utah. MATERIALS AND METHODS A retrospective, age-matched chart review identified records of 6 patients who underwent...

Journal: :Arquivos brasileiros de oftalmologia 2007
Marcelo Galiano Credie Maria Cristina Nishiwaki-Dantas Sérgio Felberg Fabiana Amorim Paulo Elias Correa Dantas

PURPOSE To compare quantitative changes induced in the tear film of patients submitted to photorefractive keratectomy and LASIK over a year. METHODS A prospective, longitudinal, comparative, post-interventional study was designed to distinguish tear film changes before and one year after refractive surgery procedures in 48 patients submitted to PRK and 36 patients submitted to LASIK, using ty...

Journal: :The journal of medical investigation : JMI 2003
Xin-Jun Yang Hong-Tao Yan Yutaka Nakahori

OBJECTIVE To evaluate the effectiveness of laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) for correcting myopia. METHODS Study selection, data extraction, and quality assessment were performed by two of authors independently. Summary odds ratios and 95% confidence intervals were calculated by DerSimonian & Laird random-effects model and Mantel-Haenszel (fixed-effec...

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