purpose: to detect the prevalence of dry eye after vitrectomy and its influencing factors. methods: schirmer i, tear basic secretion test and tear breakup time was done preoperatively and 3 months postoperatively on consecutive patients undergoing vitrectomy in khatam hospital from 2005 to 2006. eyes with previous peritomies of more than 120◦ and symptoms of dry eye or tear tests compatible wit...

Objectives To investigate corneal, scleral, choroidal, and foveal thicknesses in female patients with rheumatoid arthritis (RA) and compare them with healthy subjects. Materials and Methods This prospective study included consecutive female patients diagnosed with RA and healthy subjects. Corneal, scleral, choroidal, and retinal (foveal) thicknesses were obtained by using optical coherence to...

PURPOSE To describe a new surgical approach for the tectonic reconstruction of the anterior ocular segment and the management of scleral and conjuctival melting. METHODS Case series of patients demonstrating anterior segment anomalies, such as scleral and conjunctival melting. The anterior stromal part of a pre-cut corneal graft for Descemet's stripping automated endothelial keratoplasty (DSA...

normal 0 false false false en-us x-none ar-sa background: we aimed to compare peak systolic velocity of central retinal artery (psv.cra) and peak systolic velocity of ophthalmic artery (psv.oa) between patients with retinal detachment who were treated with segmental scleral bucking and scleral buckling with encircling procedure. materials and methods: this study was a descriptive-analytic cross...

PURPOSE To use swept-source optical coherence tomography (OCT) to image the posterior sclera at the posterior pole and around the optic nerve head (ONH) and measure the subfoveal scleral thickness and laminar thickness to evaluate the relationship between the measured thicknesses and ocular parameters. DESIGN Prospective, cross-sectional design. METHODS The study included 103 patients with ...

To experimentally characterize 2D surface mapping of the deformation pattern of porcine peripapillary sclera following acute elevations of intraocular pressure (IOP) from 5 mm Hg to 45 mm Hg. Four porcine eyes were obtained within 48 h postmortem and dissected to the sclera. After the anterior chamber was removed, each posterior scleral shell was individually mounted at the equator on a custom-...

OBJECTIVES To determine surface coverage of measurements using the sMap3D® corneo-scleral topographer in patients presenting for scleral lens fitting. METHODS Twenty-five eyes of 23 scleral lens patients were examined. Up-gaze, straight-gaze, and down-gaze positions of each eye were "stitched" into a single map. The percentage surface coverage between 10mm and 20mm diameter circles from corne...

VERY many different corneo-scleral stitches are used in cataract extraction, and it is generally agreed that such stitches should be capable of closing the corneo-scleral section promptly at any stage of the operation with perfect apposition of the lips of the wound and without danger of inversion. It should, furthermore, be simple to introduce, and not hinder the subsequent steps of the operat...

PURPOSE The purpose of this study was to evaluate the effects of intraocular pressure on the permeability of human and rabbit sclera to water, dexamethasone, and carboxyfluorescein. METHODS Scleral sections excised from moist-chamber-stored human globes or eyes obtained from euthanatized New Zealand White rabbits were mounted in a perfusion chamber that can create a transscleral pressure that...