نتایج جستجو برای: hyperopia
تعداد نتایج: 1060 فیلتر نتایج به سال:
PURPOSE To estimate the prevalence of refractive errors among adult black and white Americans and to identify risk factors associated with these refractive errors. METHODS Refractive error was measured in a population-based sample of black and white adults age 40 or older residing in east Baltimore from 1985 through 1988. Aphakic eyes were excluded from analysis. RESULTS The prevalence of m...
PURPOSE Our study provides epidemiologic data on the prevalence of refractive errors in all age group ≥5 years in Korea. METHODS In 2008 to 2012, a total of 33,355 participants aged ≥5 years underwent ophthalmologic examinations. Using the right eye, myopia was defined as a spherical equivalent (SE) less than -0.5 or -1.0 diopters (D) in subjects aged 19 years and older or as an SE less than ...
Purpose To compare the postoperative higher-order-aberrations (HOAs) after hyperopic small incision lenticule extraction (SMILE), hyperopic laser-assisted in situ keratomileusis (LASIK), and lenticule implantation for correction of hyperopia. Methods Eighteen monkeys were divided to six groups: +2.00 D and +4.00 D hyperopic SMILE, +2.00 D and +4.00 D hyperopic LASIK (n = 6 eyes for each), and...
Until recently, the pursuit of emmetropia in patients with astigmatism (around 30% of the population) was infeasible since the only intraocular lenses available on the market were designed to correct myopia or hyperopia. However, with the new toric lens designs now available, a patient’s cataract, myopia, hyperopia and astigmatism can all be corrected by means of a simple, safe operation follow...
Late capsular bag distension syndrome occurs most of the time with the accumulation of opaque milky fluid behind the IOL, without refractive change, like in one of our cases. The other case that we will describe had an accumulation of a clear fluid behind the IOL with an induced hyperopia. To the best of our knowledge, this is the first published report of capsular bag distension syndrome with ...
OBJECTIVE To evaluate the efficacy and predictability of laser in situ keratomileusis (LASIK) for hyperopia in a prospective study of 54 eyes of 29 patients. METHODS Before LASIK, 44 eyes (81.48%) had a spectacle-corrected visual acuity of 20/20 or better, and 54 eyes (100%) had 20/40 or better. Surgery was performed under topical anesthesia using the Keracor 116 excimer laser and Chiron auto...
Background & Objectives: To determine the prevalence rates of refractive errors in Mashhad, Iran Methods: In this population-based study, random cluster sampling was performed on the urban population of Mashhad and of 4453 selected individuals, 70.4% participated in the study. Refractive errors were assessed using cycloplegic refraction in participants who were ≤ 15 years of age and non-cycl...
Several aspects make the treatment of hyperopia and selecting method challenging. This article has reviewed main surgical options for factors that must be considered when choosing right treatment. The modern refractive technology offers excellent with optimal choice procedure being dependent on level error, age patient unique anatomical in each case. Surgeons perform a complete evaluation risk-...
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