نتایج جستجو برای: scleral punch
تعداد نتایج: 7006 فیلتر نتایج به سال:
The 'fishmouth phenomenon' seen in some previously treated retinal detachments is associated with large horeshoe tears and scleral buckling techniques. A method of treating patients with this complication is described in which scleral buckling with implant or explant is not used. The technique utilises intravitreal air tamponade with cryopexy and gives good results. The incidence of patients de...
PURPOSE Subjective and objective evaluation of scleral lens tolerance and fitting before and after corneal cross-linking (CXL) for progressive keratoconus. METHODS In this prospective cohort, evaluations were made of 18 unilateral eyes in patients who underwent CXL and had been wearing scleral lenses before the procedure. All the patients gave informed consent; they were able to cooperate wit...
The sclera is the tough outer covering of the eye that provides structural support and helps maintain intraocular pressure. In some fishes, reptiles, and birds, the sclera is reinforced with an additional ring of hyaline cartilage or bone that forms from scleral ossicles. Currently, the evolutionary and genetic basis of scleral ossification is poorly understood, especially in teleost fishes. We...
By Gaurav K. Shah, MD; and Baseer Ahmad, MD Is scleral buckling surgery for retinal detachment (RD) repair here to stay? We believe the answer is “yes,” but only if ophthalmologists continue to perform and teach these procedures. If we do not, scleral buckling procedures will pass into history. There is no doubt that pars plana vitrectomy (PPV) is an effective procedure, valued day in and day o...
OBJECTIVES This study sought to investigate the patterns of injury resulting from a punch mechanism and to investigate the associated psychopathology present in patients with these injuries. METHODS Retrospective analysis of patients with hand radiographs ordered from the emergency department allowed for identification of patients with a punch mechanism. We recorded injury patterns and querie...
The effect of punch tilting on the mechanism of punch penetration in the die of a rotary tablet machine during the compression cycle was evaluated by installing four displacement transducers on one station of a rotary machine. Two transducers were symmetrically positioned beside the upper punch in the upper turret, and the other two transducers were similarly placed beside the lower punch in th...
BACKGROUND/AIMS Macular translocation with scleral imbrication is a new technique for treating subfoveal choroidal neovascular membranes (CNV). This procedure shortens the sclera but may result in a minimal decrease in the internal circumference of the globe and limits the amount of foveal displacement. The authors propose a new scleral retraction suture aimed at decreasing the internal circumf...
PURPOSE The authors report a case of fungal scleral keratitis and endophthalmitis as a complication of pterygium surgery. METHODS Case presentation. RESULTS A 46-year old woman underwent pterygium excision with topical use of intraoperative mitomycin C. By day 21 after excision, scleral melting was followed by fungal keratitis. Endophthalmitis ensued, which rapidly progressed, despite surgi...
PURPOSE To evaluate the usefulness of scleral pneumatonometry as an alternative for corneal measurements of intraocular pressure (IOP) over a broad range of IOPs. DESIGN Prospective, observational cohort study. PARTICIPANTS The study was conducted in the University of California, San Francisco, Retina Clinic between August and November 2013 in 33 adult patients (age range, 34-94 years; mean...
BACKGROUND The colposcopy-directed punch biopsy is widely used in the management of women with abnormal cervical cytology; however, its accuracy compared with definitive histology from an excision biopsy is not well established. OBJECTIVES To assess the accuracy of the colposcopy-directed punch biopsy to diagnose high-grade cervical intraepithelial neoplasia (CIN) by performing a systematic r...
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