Effect of astigmatism and spherical equivalent correction on contrast sensitivity [PDF]
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]
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
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]
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]
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]
Xiaotong Sha, Xiaoning Yu
exaly +2 more sources
Comparison of spherical equivalent and estimated prevalence of myopia in school-age children between Shanghai and Yunnan in China [PDF]
Xiaodong Zhou
exaly +2 more sources
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]
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
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

