1,721,038 research outputs found
Corneal graft dellen in a patient implanted with a Boston keratoprosthesis type 1
No full textThe purpose of this study was to report a case of corneal dellen in a patient implanted with a Boston type 1 keratoprosthesis (KPro), which rapidly appeared after the loss of the large-diameter soft contact lens. This study is an observational case report of a 56-year-old man who underwent KPro implantation in his right eye in November 2010. In March 2014 during a follow-up visit, two areas of corneal dellen were observed. The patient had lost his bandage contact lens. With the application of a new soft contact lens, the thinned areas recovered completely within 5 days. After keratoprosthesis implantation, it is necessary to maintain uninterrupted wear of a bandage contact lens as it allows for adequate ocular surface hydration and prevents consequent complications. This case report highlights the need to provide proper instructions to such patients, in order to minimize the risk
A 14-year follow-up of photorefractive keratectomy
No full textTo evaluate the long-term outcome of myopic photorefractive keratectomy (PRK)
Obstruction of the Ex-PRESS Miniature Glaucoma device: Nd: YAG Laser as a Therapeutic Option
No full textEye Rubbing and Transient Corneal Ectasia Detected by Topography in a Pediatric Patient
No full textAbstract: We report on a 13-year-old girl undergoing changes in the refraction of her OS associated with eye rubbing. Corneal topography showed a corneal deformation in OS, classified as stage 1 keratoconus according to the Krumeich classification. A significant reduction in eye rubbing led to a normal corneal shape at the 1-year follow-up. Transient and fully reversible corneal ectasia can be caused by eye rubbing in pediatric age. This may have implications when counseling very young patients with eye rubbing
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Assessing Descemet's Stripping Automated Endothelial Keratoplasty in complex cases followed up with Optical Coherence Tomography
No full textAbstract Purpose : to assess the predictive value of early Anterior Segment Optical Coherence Tomography (AS-OCT) findings on graft adherence after Descemet's Stripping Automated Endothelial Keratoplasty (DSAEK) performed in complex eyes. Methods : hirty-seven consecutive DSAEK in complex eyes, performed by a single surgeon (C.E.T.), were analyzed. The main inclusion criterion was a history of one or more surgical procedures, i.e. trabeculectomy, glaucoma drainage device (GDD, Baerveldt®) implantation, penetrating keratoplasty (PK), aphakia with anterior chamber intraocular lens (AC-IOL) implantation, AC-IOL + GDD, PK + GDD, PK + AC-IOL + GDD, respectively. Complexity included severe corneal edema. Uncomplicated cataract extraction with posterior chamber IOL implantation was not a selection criterion. Graft adherence/detachment was assessed using AS-OCT on day 1 (early AS-OCT) and week 1 postoperatively and again at 1, 3 and 6 months. Grading was: complete attachment, one sector peripheral detachment (1S.P.D.), more than one sector peripheral detachment (>1S.P.D.). Results :f the 37 consecutive complex eyes analyzed, thirty eyes (81%) had severe corneal edema preoperatively. At day 1, 7 grafts (19%) were completely attached in the AS-OCT scan and 30 (81%) showed some degree of peripheral detachment. Nineteen (63%) of the partially detached cases presented 1S.P.D. and 11 (37%) had >1S.P.D. At 6 months, completely attached grafts were stable. Seventeen eyes with 1S.P.D. (90%) showed improved graft adhesion; 2 (10%) were unchanged. Of the 11 cases with >1S.P.D.: 8 (72%) were stable, 2 (18%) detached completely while and 1 (9%) improved. Conclusions :S-OCT is a non-invasive imaging technique and therefore suited to monitor DSAEK graft adhesion in complex eyes. Findings at day 1 yielded a good predictive value of graft adherence at 6 months. Therefore, early AS-OCT scans do, indeed, facilitate decision-making with regards to further surgical procedures in complex eyes. This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016
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