Effect of astigmatism and spherical equivalent correction on contrast sensitivity [PDF]
International Journal of OphthalmologyAIM: 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
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Relationship between axial length and spherical equivalent refraction in Chinese children [PDF]
Advances in Ophthalmology Practice and Research, 2021 Purpose: To evaluate the relationship between axial length (AL) and spherical equivalent refraction (SER) in Chinese children. Methods: This hospital-based cross-sectional study included 1208 eyes (from 617 Chinese boys and 591 Chinese girls), ranging ...
Shuying Chen +4 more
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The Association of Central corneal thickness with Intra-ocular Pressure and Refractive Error in a Nigerian Population [PDF]
Online Journal of Health & Allied Sciences, 2008 The purpose of this study was to determine the variation of central corneal thickness (CCT) with intraocular pressure (IOP) and spherical equivalent refractive error.
Eghosasere Iyamu, Misan Memeh
doaj +2 more sources
Patient satisfaction and acceptance of spherical equivalent spectacles correction wear in rural India [PDF]
Indian 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
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On the Number of Affine Equivalence Classes of Spherical Tube Hypersurfaces [PDF]
Mathematische Annalen, 2010 We consider Levi non-degenerate tube hypersurfaces in $\CC^{n+1}$ that are $(k,n-k)$-spherical, i.e. locally CR-equivalent to the hyperquadric with Levi form of signature $(k,n-k)$, with $n\le 2k$. We show that the number of affine equivalence classes of
Isaev, A. V.
core +4 more sources
Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System
IEEE 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
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Spherical Equivalent Percentile Curves in a Portuguese School-Aged Population. [PDF]
J Clin MedBacground/Objectives: This study aimed to develop age- and sex-specific spherical equivalent (SE) percentile curves and estimate the prevalence of refractive errors (REs) in Portuguese schoolchildren aged 6–17 years. Methods: A cross-sectional study was conducted in three schools in Lisbon, including 2205 children (mean age = 9.3 ± 2.6 years; 49.3 ...
Peñaloza-Barbosa MI +4 more
europepmc +4 more sources
Agreement Between Non-Cycloplegic Photorefraction and Retinoscopy in Pediatric Refraction [PDF]
LifeAccurate assessment of refractive error in children is essential for clinical decision-making, yet agreement between non-cycloplegic techniques remains uncertain, particularly due to differences in accommodative demand. This study evaluated the agreement
Ana Roque +4 more
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Time to replace the spherical equivalent with the average paraxial lens power. [PDF]
BMJ Open Ophthalmol, 2023 Kaye SB.
europepmc +4 more sources
Legendre equivalences of spherical Boltzmann machines [PDF]
Journal of Physics A: Mathematical and Theoretical, 2020 Abstract We study either fully visible and restricted Boltzmann machines with sub-Gaussian random weights and spherical or Gaussian priors. We prove that the free energies of the spherical and Gaussian models are related by a Legendre transformation. Incidentally our analysis brings also a new purely variational derivation of the free
Genovese G., Tantari D.
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