نتایج جستجو برای: laser in situ keratomileusis

تعداد نتایج: 17037666  

Journal: :Digital journal of ophthalmology : DJO 2014
Dan Z Reinstein Zachary Dickeson Timothy J Archer Marine Gobbe

Incomplete flaps are a relatively uncommon complication of laser-assisted in situ keratomileusis (LASIK) that occur when creation of the corneal flap is interrupted. Further complications can arise if a second flap is created that intersects the original flap interface, resulting in tissue slivers that can lead to more complications and poor visual outcomes. We report the case of a 56-year-old ...

2017
Mohammad Rizviul Kabir Henning Richter

A selective laser melting (SLM)-based, additively-manufactured Ti-6Al-4V alloy is prone to the accumulation of undesirable defects during layer-by-layer material build-up. Defects in the form of complex-shaped pores are one of the critical issues that need to be considered during the processing of this alloy. Depending on the process parameters, pores with concave or convex boundaries may occur...

Journal: :بینا 0
احمد شجاعی باغینی a shojaei baghini baghiatalah university of medical sciences, tehran, iranدانشگاه علوم پزشکی بقیه اله عباس ابوالحسنی a abolhassani basir eye center, tehran, iranتهران- خیابان جمالزاده شمالی- پلاک 255- مرکز چشم پزشکی بصیر- مرکز تحقیقات چشم علیرضا برادران رفیعی ar baradaran-rafii ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranدانشگاه علوم پزشکی شهید بهشتی مهدی اصلانی m eslani school of medicne, tehran university of medical sciences, tehran, iranدانشکده پزشکی- دانشگاه علوم پزشکی تهران فرساد نوریزاده f noorizadeh school of medicne, tehran university of medical sciences, tehran, iranدانشکده پزشکی- دانشگاه علوم پزشکی تهران

purpose: to evaluate the visual outcomes of cross-cylinder ablation in laser in situ keratomileusis (lasik) for eyes with high astigmatic refractive errors and low spherical component. methods: we prospectively evaluated cross cylinder lasik in patients with high astigmatic refractive error but low spherical component over a period of 2 years. all procedures were performed with the nidek ec-500...

Journal: :journal of research in medical sciences 0
alireza ashtari dep. of ophtalmology, isfahan university of medical sciences ali akbar mortazavi dep. of ophtalmology, isfahan university of medical sciences

background: this study was conducted to evaluate variations in heart rate and to determine the occurrence of oculocardiac reflex (ocr) during laser in situ keratomileusis (lasik). methods: this descriptive, prospective study was designed to observe the effect of suction ring and ablation stages during lasik procedure on the heart rate. the ecg was taken before and during lasik operation on the ...

Journal: :Journal of Cataract and Refractive Surgery 2010

2012
Miriam García-Fernández Joaquín Castro-Navarro Antonio Bajo-Fuente

UNLABELLED INTRODUCTION Laser-assisted in situ keratomileusis surgery may induce postoperative changes in the vitreomacular interface due to the mechanical stretch of the vitreous produced by the suction ring and the shock waves generated by the excimer laser and, subsequently, may provoke macular hole formation. CASE PRESENTATION A 53-year-old Spanish woman who had undergone a laser-assis...

Journal: :American journal of ophthalmology 2002
Timothy J McCulley Charles W G Eifrig Norman J Schatz Steven I Rosenfeld Byron L Lam

PURPOSE To report infraorbital nerve dysfunction after laser in situ keratomileusis. DESIGN Observational case report. METHODS Neuro-ophthalmologic examination with brain and orbital magnetic resonance imaging (MRI) and orbital computed tomography (CT). RESULTS During laser in situ keratomileusis, two healthy women, aged 42 and 46 years, experienced acute onset of sharp ipsilateral cheek ...

Journal: :[Zhonghua yan ke za zhi] Chinese journal of ophthalmology 2001
W Lu Z Li Y Qi

OBJECTIVE To evaluate the effects of excimer laser in situ keratomileusis in correcting severe myopia and astigmatism after penetrating keratoplasty. METHODS Excimer laser in situ keratomileusis was performed on ten eyes of ten patients to correct high ametropia in cases having previously undergone penetrating keratoplasty. RESULTS After surgery, all grafts remained clear and no corneal gra...

Journal: :Current opinion in ophthalmology 2006
Vikentia J Katsanevaki Maria I Kalyvianaki Dimitra S Kavroulaki Ioannis G Pallikaris

PURPOSE OF REVIEW The aim of this article is to provide an update on epipolis laser in-situ keratomileusis--an alternative surface photorefractive surgical technique for the correction of myopia. RECENT FINDINGS In-vivo studies on animal models provide evidence that the replacement of the epithelial sheet on an ablated cornea can control corneal wound healing. Preliminary clinical data confir...

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