mahmood jabbarvand

PURPOSE: To investigate the change in anterior, posterior, and net corneal power more than 18 months after photorefractive keratectomy (PRK) by RTVue anterior segment optical coherence tomography (OCT). SETTING: Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. DESIGN: Prospective observational study. METHODS: PRK was performed using Technolas TENEO 317 laser platform. Anterior, posterior, and net corneal power was measured by the RTVue-XR anterior segment OCT system with the Pachymetry + Cpwr scan pattern at baseline and months 1, 3, 6, 12, 18, and more than 18 (up to 27) after PRK...

PURPOSE: The purpose of this article was to introduce a novel surgical technique for the management of peripheral Descemet's membrane perforation during deep anterior lamellar keratoplasty (DALK). METHODS: First, a thin stromal patch was prepared either from the anterior stromal lamella cut during DALK or from the anterior stroma of a Descemet's stripping automated endothelial keratoplasty button. The stromal patch was secured in a stromal pocket dissected deep in the trephination edge along the perforation site...

PURPOSE: To compare the use of systemic oral and intravenous antibiotics as a prophylactic measure to prevent endophthalmitis in patients with open globe injuries. METHODS: This prospective study was conducted on 1,255 consecutive patients with open globe injuries due to sharp or blunt trauma in a hospital setting in Tehran, Iran from January, 2011 to May, 2013. The patients were randomly divided into two groups and either received intravenous or oral systemic antibiotics as a measure to prevent endophthalmitis...

PURPOSE: The aim was to compare the corneal curvature and power measured with a corneal topographer, Scheimpflug camera, optical biometer, and Javal keratometer. MATERIALS AND METHODS: A total of 76 myopic individuals who were candidates for photorefractive keratectomy were selected in a cross-sectional study. Manual keratometry (Javal Schiotz type; Haag-Streit AG, Koeniz, Switzerland), automated keratometry (IOL Master version 3.02, Carl Zeiss Meditec, Jena, Germany), topography (TMS4, Tomey, Erlangen, Germany), and Pentacam HR (Oculus, Wetzlar, Germany) were performed for all participants...

PURPOSE: To compare anterior segment parameters in patients with central retinal vein occlusion (CRVO) with normal control subjects by anterior segment optical coherence tomography (AS-OCT). METHODS: In this coss-sectional case-control study, 42 eyes from 21 patients with unilateral CRVO and 21 eyes from 21 age- and sex-matched healthy control subjects were recruited. Study eyes were divided into three groups: involved eyes of CRVO patients (CRVO eyes), fellow eyes of CRVO patients (fellow eyes), and control eyes...

As the number of contact-lens wearers rises worldwide, Pseudomonas aeruginosa (PA) keratitis is attracting more attention as a major public health issue. Corneal lesions of PA, being the most intimidating complication of contact-lens wearer, can progress rapidly in spite of local antibiotic treatment, and may result in perforation and the permanent loss of vision. One of the explanations proposed for the evasion of the pathogen from immune responses of the host as well as antibacterial treatment is the fact that invasive clinical isolates of PA have the unusual ability to invade and replicate within surface corneal epithelial cells...

AIM: To evaluate the effect of implantation depth of Intacs microthin prescription inserts (Addition Technology Inc, Fremont, California) on visual and topographic outcomes in patients with post- laser-assisted in situ keratomileusis (LASIK) ectasias. SETTINGS AND DESIGN: Retrospective, observational case series. MATERIALS AND METHODS: In this case series, 16 eyes of 12 patients were evaluated. All cases were post-LASIK ectasia that had undergone intrastromal corneal ring segment (ICRS) implantation...

PURPOSE: To determine the prevalence of calibration errors in Goldmann applanation tonometers at Farabi Eye Hospital. METHODS: This cross-sectional study was performed on all tonometers in use at Farabi Eye Hospital. All Haag-Streit Goldmann applanation tonometers were checked according to the manufacturer's method by two independent observers and by a third observer in case of mismatched results. Calibration errors were classified into 6 categories of ±0.5, ±1, ±1...

BACKGROUND: To compare the anatomic effects of phacoemulsification (Phaco) versus combined phacoemulsification and viscogonioplasty (Phaco-VGP) on drainage angle status in primary angle-closure glaucoma (PACG) using anterior segment optical coherence tomography (AS-OCT). DESIGN: Prospective, randomized clinical trial. PARTICIPANTS: Sixty-seven eyes of 57 patients with the diagnosis of PACG. METHOD: Patients were randomized to undergo Phaco alone (33 eyes) or Phaco-VGP (34 eyes)...

PURPOSE: To assess the prophylactic effect of preoperative application of topical diclofenac on postoperative pain control in patients having photorefractive keratectomy (PRK). SETTING: Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. DESIGN: Randomized masked clinical trial. METHODS: In this paired-eye study, patients having bilateral PRK received 1 drop of diclofenac 0.1% in 1 eye and 1 drop of placebo in the fellow eye 2 hours before PRK...

PURPOSE: To describe a case of necrotizing scleritis associated with relapsing polychondritis (RP), which was treated with infliximab. METHOD: Observational case report. RESULTS: A 60-year-old woman presented with a red eye. She had a past medical history of nose deformity, hearing problem, and tinnitus. Ophthalmological examination disclosed necrotizing scleritis and peripheral ulcerative keratitis. RP was diagnosed. The disease progressed despite treatment with methotrexate and cyclophosphamide, but infliximab resulted in a stabilization of the disease...

We report a case with bilateral intumescent electric cataracts, outcomes of cataract surgery with a new technique, and a histopathologic study of the anterior capsule followed by a review of the literature on electric cataracts. The patient had bilateral cataract extraction and posterior chamber intraocular lens implantation, achieving a visual acuity of 20/20. Hematoxylin and eosin staining of the anterior capsule revealed significant scar tissue formation consisting of fibroblast proliferation and hyaloid production over the basement membrane of the anterior capsule...

PURPOSE: To report a case with focal corneal decompensation after filtering surgery with inadvertent inadequate irrigation of mitomycin C (MMC). METHODS: Case report and review of literature. RESULTS: A 25-year-old man first referred with the complaint of photophobia. His ocular examinations revealed diffuse keratic precipitates and many iris nodules in both eyes. The primary diagnosis was idiopathic bilateral granulomatous anterior uveitis...

The mutation spectrum of CYP1B1 among 104 primary congenital glaucoma patients of the genetically heterogeneous Iranian population was investigated by sequencing. We also determined intragenic single nucleotide polymorphism (SNP) haplotypes associated with the mutations and compared these with haplotypes of other populations. Finally, the frequency distribution of the haplotypes was compared among primary congenital glaucoma patients with and without CYP1B1 mutations and normal controls. Genotype classification of six high-frequency SNPs was performed using the PHASE 2...

A 32-year-old man had photophobia and blurred vision 2 weeks after uneventful laser in situ keratomileusis to correct myopia. He was treated with steroids for suspected diffuse lamellar keratitis, antiherpetics, and antibiotic eyedrops, but the condition worsened and the patient developed further blurred vision, an inflamed eye, and pain. When referred to us, the patient had an extensive corneal ulcer with hypopyon and mycelia were reported in scrapings of the ulcer bed. Nattrassia mangiferae (Hendersonula toruloidea) was cultured from the specimen...

PURPOSE: To evaluate the effects and safety of laser in situ keratomileusis (LASIK) and diode thermal keratoplasty (DTK) for correction of moderate to high hyperopia (+5.00 to +10.00 D). METHODS: This prospective study included 30 eyes of 15 patients who had LASIK-DTK bioptics. The median age of the patients was 50.5 years. LASIK was performed using a Nidek EC-5000 excimer laser system and DTK by a Prolaser DTK laser, 2 months after LASIK. Follow-up ranged from 9 to 12 months (mean, 10...