Myopia has been investigated scientifically for over a century but the search for an effective remedy has been manifestly unsuccessful. The prevalence of myopia in developed societies has now risen to about 30% in USA (Vitale, Sperduto et al. 2009) and up to 70% in some Asian centres (Lin, Shih et al. 2004). In addition to the socio-economic burden of providing optical corrections for myopia, c...

AIM To report the usefulness of uncorrected distance visual acuity (DVA) at 16 years to "screen" for myopia status and to assess the lifetime risk of myopia, based on a national birth cohort. METHODS 1867 members of the 1958 British birth cohort for whom there were data on acuity at 16 years had autorefraction, as part of a biomedical survey, at 45 years. Reduced uncorrected DVA at age 16 yea...

Ophthalmologists should consider the causes of myopia and not simply treat its consequences Myopia has been undergoing a major re-evaluation in recent years both by ophthalmologists and basic scientists, though for diVerent reasons. For ophthalmologists the rise of refractive surgery in the past decade has seen myopia changing from a condition requiring optical correction to one that can be man...

purpose : this study was planned to evaluate the efficacy, safety and complication of photorefractive keratectomy (prk) as a retreatment of residual myopia after previous laser in situ keratomileusis (lasik). methods : in this descriptive study in ophthalmology ward, feiz hospital, isfahan university of medical sciences, iran, with the consideration of inclusion and exclusion criteria, 170 eyes...

Myopia studies are notoriously difficult to carry out. Past studies on intervention in myopia progression have given conflicting results. Beside inaccurate and inadequate measurements, the most important cause for this is the very variable nature of myopia, which makes it difficult to achieve baseline comparability between the control and the study group. Although there were inclusion criteria ...

background: myopia has different prevalence rate worldwide and there is controversial points about its environmental risk factors. the prevalence of myopia in medical interns atshirazmedicalschool and its probable risk factors were studied.   method: in this retrospective cross-sectional study, three hundred interns (7 th -year medical students) at shiraz university of medical sciences were exa...

A cross-sectional study on a normal clinical myopic population reveals that there is a difference in the pattern of myopic progression between Malays and Chinese in Malaysia. It shows that while myopia in Malays stays relatively constant throughout 10 to 50 years of age, myopia in Chinese progresses rapidly from 10 to 20 years of age, after which it starts to show hyperopic shift, reaching a le...

purpose: to compare the safety, efficacy, predictability, stability and complications of wavefront-guided laser-assisted subepithelial keratectomy (lasek) in low myopia, myopic astigmatism and high myopia correction. methods: in his retrospective study, 416 eyes were divided to 3 groups: 159 eyes with low myopia (lm) and mean refractive spherical equivalent (mrse) of -3.68±1.33 (sd) diopter (d)...

In a sample of undergraduate students, myopia was associated with higher Math and Total SAT score, and males had higher Math and Total SAT scores than females. The association between myopia and higher Math and Total SAT scores was significant only among males, and the gender differences in Math and Total SAT scores were significant only among allergic participants. There were also significant ...

PURPOSE To determine the utility of a child's first grade refractive error and parental history of myopia as predictors of myopia onset between the second and eighth grades. METHODS Subjects were nonmyopic children in the first grade who were enrolled in the Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study. Myopia was defined as -0.75 D or more myopia in ...