Results 1 to 10 of about 1,175,457 (250)

Effect of astigmatism and spherical equivalent correction on contrast sensitivity [PDF]

open access: yesInternational Journal of Ophthalmology
AIM: To investigate the effect of astigmatism and spherical equivalent (SE) correction on contrast sensitivity (CS). METHODS: In this cross-sectional study, 103 visually normal subjects aged 18 to 36y with bilateral regular astigmatism in range of 1.00 ...
Maryam Saffarizadeh   +3 more
doaj   +2 more sources

Patient satisfaction and acceptance of spherical equivalent spectacles correction wear in rural India [PDF]

open access: yesIndian Journal of Ophthalmology, 2017
Purpose: The aim of this study was to explore the possibilities of acceptance of a ready-to-dispense spherical equivalent (SE) of spherocylindrical (SC) correction spectacles in rural India.
B Sandeep Reddy   +3 more
doaj   +2 more sources

Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System

open access: yesIEEE Access, 2019
The equivalent dipole array is an effective method for emission source modeling to solve practical electromagnetic engineering problems. In this paper, a spherical equivalent dipole array method (SEDAM) is proposed to model practical and complex ...
Jing Nie, Shunchuan Yang, Donglin Su
doaj   +3 more sources

BMI moderates the association between physical fitness and spherical equivalent in Chinese college students: a cross-sectional study [PDF]

open access: yesFrontiers in Public Health
BackgroundMyopia has become a global public health crisis, with young adults representing a priority population for prevention. While physical fitness is recognized as a protective factor, whether this protection is uniformly distributed across different
Jiahuan He   +3 more
doaj   +2 more sources

Prevalence of refractive errors in children of Puerto Rico [PDF]

open access: yesInternational Journal of Ophthalmology, 2023
AIM: To determine the prevalence of refractive error in 5- to 17-year-old schoolchildren in Puerto Rico. METHODS: A quantitative descriptive study of 2867 children aged 5 to 17y from all seven educational regions of Puerto Rico was conducted from 2016 ...
Héctor C. Santiago   +7 more
doaj   +1 more source

Relationship between axial length and spherical equivalent refraction in Chinese children [PDF]

open access: yesAdvances in Ophthalmology Practice and Research, 2021
Xiaotong Sha, Xiaoning Yu
exaly   +2 more sources

Refractive outcomes of table-mounted and hand-held auto-refractometers in children: an observational cross-sectional study

open access: yesBMC Ophthalmology, 2021
Background To compare the refractive results of hand-held and table-mounted autorefractors. Methods We designed this study as an observational, cross-sectional study.
Müjdat Karabulut   +2 more
doaj   +1 more source

Virtual reality training improves accommodative facility and accommodative range [PDF]

open access: yesInternational Journal of Ophthalmology, 2022
AIM: To evaluate the effects of virtual reality (VR) training on different parameters of vision. METHODS: Sixty individuals ranged 18-60 years old with asthenopia were randomly divided into short-term (n=40) and long-term (n=20) treatment groups.
Dong-Yu Guo   +8 more
doaj   +1 more source

Clinical application of bicylindric intraocular lens power calculation method

open access: yesIndian Journal of Ophthalmology, 2020
Purpose: To analyze the reliability of the refractive results prediction obtained in intraocular lens (IOL) calculation using bicylindric power calculation method, with the use of steep and flat keratometry readings compared with the classical mean ...
Jorge A Calvo-Sanz   +2 more
doaj   +1 more source

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