Othman M. Al-Omar

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AIMS & BACKGROUND The main objectives of this study were to determine the prevalence and magnitude of trachoma in Saudi Arabia and to evaluate the factors that play a role in the transmission and severity of the disease. METHODS The samples consisted of a stratified multistage random cluster design that selected defined primary sampling units of 50-60(More)
We studied 39 blind painful eyes in 39 patients who were treated with retrobulbar injection of absolute (96%) alcohol for their severe ocular pain at the King Khaled Eye Specialist Hospital from January 1984 to January 1987. There were 21 (54%) male and 18 (46%) female patients; all were followed for at least three months. The protracted ocular pain was(More)
OBJECTIVE To evaluate the azithromycin effects alone and in combination with other agents in the prophylaxis and treatment of murine toxoplasmosis. METHODS A total of 280 BALB/c mice were included, and 2 x 103 Toxoplasma organisms of the RH strain Toxoplasma gondii strain ATCC50174 were given intraperitoneally to each mouse. In experiment one, 40 animals(More)
PURPOSE To compare the safety and efficacy of single oral-dose azithromycin with a 7-week topical tetracycline ointment course in the treatment of active trachoma. METHODS A total of 64 patients with active trachoma were selected randomly to receive azithromycin (20 mg/kg) in a single dose or topical tetracycline eye ointment for 6 weeks. Clinical(More)
OBJECTIVE To assess azithromycin levels in human serum, aqueous humor, tear fluid, and conjunctival tissue specimens after administration of a single 1-g oral dose of azithromycin. METHODS Sixty patients undergoing cataract surgery were included in this analysis. Serum, aqueous, and tear specimens were collected 3, 6, and 12 hours and 1, 2, 3, and 4 days(More)
OBJECTIVE This study aimed to determine whether heparin surface-modified (HSM) intraocular lenses (IOLs) with a hydrophilic surface would reduce cell adherence and other postoperative changes compared with the conventional polymethylmethacrylate (PMMA) IOLs in patients with either diabetes mellitus or inactive uveitis. DESIGN The study design was a(More)
A population-based survey of the prevalence of major causes of blindness and visual impairment was conducted in Bisha region, Saudi Arabia. Overall, 2882 people were examined. The prevalence of blindness (visual acuity of < 3/60 in the better eye with best available correction) was 0.7% and the prevalence of visual impairment (visual acuity < 6/12 but ≥(More)
PURPOSE/METHODS Two patients were bitten on the face by a rabid desert fox and sustained eyelid lacerations. The patients were examined and they received the same prophylactic treatment: human rabies immunoglobulin, intramuscularly and at the laceration site, and rabies human-diploid cell vaccine. RESULTS/CONCLUSIONS One patient survived; the other died.(More)
The main purpose of this study was to evaluate the long term effects of unilateral dense central corneal scars on the axial length and development of lens opacities. We included 12 patients with unilateral dense central corneal scars of early onset before the age of seven years. This study served as naturally-controlled experiment and demonstrated a(More)
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