نتایج جستجو برای: emmetropia

تعداد نتایج: 336  

Journal: :International journal of ophthalmology 2013
Xia Hua Xiao-Yong Yuan Hui Song Xin Tang

AIM To assess the refractive outcome of clear lensectomy combined with piggyback intraocular lens implantation in highly hyperopic patients. METHODS This case review included 19 eyes of 10 patients with high hyperopia and axial length less than 21mm. Intraocular lens power was calculated for emmetropia using the Holladay II formula in 17 eyes, and SRK/T formula in 2 eyes following clear lens ...

Journal: :The Medical journal of Malaysia 2012
P P Goh R Azura

This is the first population based study on ocular biometric measurements (OBMs) conducted in Malaysia. Its objective is to measure and compare among children of different ethnicity who have myopia and emmetropia. Subsets of children aged between 7 and 8 years old who participated in a larger population based refractive error study had their axial length, anterior chamber depth, lens thickness ...

Journal: :Investigative ophthalmology & visual science 2009
Balamurali Vasudevan Kenneth J Ciuffreda Bernard Gilmartin

PURPOSE The purposes of the present study were to assess the effect of a sympathetic inhibitory pharmacologic agent, timolol maleate, on the magnitude of nearwork-induced transient myopia (NITM) and its decay in different refractive groups for an extended near task duration and to determine the proportion of the young adult population manifesting effective sympathetic access under naturalistic ...

2012
Gonzalo Muñoz

To the Editor: I commend Munoz et al on their well-designed and well-conducted study on the clinical effect of a combination of multifocal intraocular lenses (MIOL) including the newest rotationally asymmetric MIOL, which appeared in the March 2012 issue of the Journal of Refractive Surgery.1 They found that contrast sensitivity was comparable to that achievable with a monofocal implant and, re...

Journal: :American journal of ophthalmology 2014
Eloy A Villegas Encarna Alcón Sandra Mirabet Inés Yago José María Marín Pablo Artal

PURPOSE To evaluate the quality of vision and depth of focus induced by controlled amounts of negative spherical aberration in patients implanted bilaterally with light-adjustable intraocular lenses. DESIGN Prospective, nonrandomized clinical trial. METHODS Seventeen patients were implanted and treated with appropriate spatial irradiance light profiles. One eye was set for emmetropia, and t...

Journal: :Investigative ophthalmology & visual science 2002
Tien Yin Wong Ronald Klein Barbara E K Klein Sandra C Tomany

PURPOSE To describe the relationship of refractive errors to the 10-year incidence of age-related maculopathy (ARM) in a defined white population. METHODS Persons aged 43 to 86 years of age in Beaver Dam, Wisconsin, were invited for a baseline examination from 1988 through 1990, and follow-up examinations 5 and 10 years later (n = 3684). Refraction was measured at baseline, with myopia define...

Journal: :European journal of ophthalmology 2007
B J Kaluzny

PURPOSE To investigate changes of crystalline lens position during accommodation in children with emmetropia, myopia, and hyperopia. METHODS A total of 188 children (372 eyes) from 4 to 19 years old (mean age 11.3+/-4.43) with cycloplegic refractive error within a range +9.00 D to -9.00 D were enrolled. After a general ophthalmic examination, ultrasound biometry was performed, with the eye at...

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