purpose: to evaluate visual outcomes after deep anterior lamellar keratoplasty (dalk) in patients with keratoconus. methods: in this interventional case series, patients with moderate to advanced keratoconus underwent dalk. inclusion criteria consisted of contact lens intolerance or poor spectacle-corrected visual acuity. dalk was performed using the big-bubble technique introduced by anwar and...

purpose : to investigate the application of mitomycin-c 0.02% (mmc) in the photorefractive keratectomy (prk) procedure in correcting regressed myopia methods : eighteen eyes of 11 patients with a spherical equivalent (se) of less than -5 diopters (d) who had undergone laser in situ keratomileusis (lasik) more than 2 years before were operated on. at the end of the prk procedure, mmc was applied...

background : phacoemulsification is one of the best surgical treatments for the cataract. secondary to the technicaladvances in estimating the intraocular lens (iol) power, the refractive errors, one of the most important surgical complications after surgery, is now reduced. currently, two methods of biometry are used to calculate the iol power, ultrasound biometry and optical biometry. both me...

purpose : to determine the prevalence of refractive condition and its risk factors among students in mashhad . methods : a total of 2510 students representing a cross-sectional of the population of mashhad were sampled using random cluster sampling strategy. primary and middle school students underwent cycloplegic refraction. the refractive errors of high school students were measured using non...

purpose: to determine the screening prevalence of amblyopia, refractive errors and strabismus among 7 to 12 year-old primary school children, tehran, iran, in 2013. methods: this population based cross sectional study was performed on randomly selected 2410 students from 40 primary schools. visual acuity was measured using yang vision tester snellen e-optotype. if visual acuity was ≤20/40, the ...

purpose : to determine the relationship between refractive errors and ocular components values in carpet weavers methods : refractive errors and ocular components values were investigated on carpet weavers at mashhad city in iran . after selection of samples, the individuals who had ophthalmic and systemic disease effective on the refractive errors were excluded from the study. refractive error...

purpose: retinopathy of prematurity (rop) adversely affects normal ocular vascularization in premature infants. it can be mild with no visual consequences, or may become aggressive with new vessel formation and even progress to retinal detachment and blindness. modern treatment can prevent blindness due to neovascularization but uncorrected refractive errors may lead to amblyopia. methods: in t...