Results 11 to 20 of about 376,107 (295)
Journal of Optometry, 2011 Purpose: The purpose of this pilot study was to determine the effect of varying lens diameter of two types of keratoconic lenses on lens performance and initial comfort with participants with either centered or oval cones.
Luigina Sorbara, Katrin Mueller
doaj +3 more sources
Biomedical Optics Express, 2018 We investigated changes in ciliary body ring diameter, lens dimensions and lens refractive index distributions with accommodation in young adults. A 3T clinical magnetic resonance imaging scanner imaged right eyes of 38 18-29 year old participants using a multiple spin echo sequence to determine accommodation-induced changes along lens axial and ...
Adnan, Muhammad Ismail +4 more
openaire +5 more sources
Relationship of the cornea and globe dimensions to the changes in adult human crystalline lens diameter, thickness and power with age. [PDF]
Exp Eye Res, 2021 Mohamed A +5 more
europepmc +2 more sources
How often are spectacle lenses not dispensed as prescribed?
Indian Journal of Ophthalmology, 2012 Spectacles are routinely prescribed by the ophthalmologist and dispensed by the opticians. We investigated how frequently the spectacles are not dispensed as prescribed and whether the frequency of inaccurate spectacles would decrease if the patients, at
Kanwar Mohan, Ashok Sharma
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A low sidelobe asymmetric beam antenna for high altitude platform communications [PDF]
, 2004 In a communications network served by a high altitude platform, the antenna beams illuminating each cell require minimized sidelobe powers. Asymmetric beams are advantageous so that cell footprints remain circular.
Thornton, J.
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Effect of Integrated Lens Antenna Diameter on Scan Loss
2022 16th European Conference on Antennas and Propagation (EuCAP), 2022 Peer ...
Karki, Sabin Kumar +3 more
openaire +3 more sources
Indian Journal of Ophthalmology, 2012 We report the surgical technique and outcome of planned posterior assisted levitation (P-PAL) in four cases of subluxated cataract. P-PAL was planned as the preferred approach in all cases.
Tova Lifshitz +4 more
doaj +1 more source
The growth and shape of the eyeball and crystalline lens in utero documented by fetal MR imaging
Heliyon, 2023 Purpose: To study the growth model, shape, and developmental relationship of lens and eyeball, we used two-dimensional Magnetic Resonance (MR) imaging to investigate gestationally age-related changes in the selected ocular parameters in vivo.
Yingying Hong +4 more
doaj +1 more source
Indian Journal of Ophthalmology, 2012 The purpose of this study was to measure peripapillary retinal nerve fiber layer thickness (RNFLT) using spectral domain optical coherence tomography (SD-OCT) in normal Indian eyes, for which, 210 normal volunteers were recruited. One eye of each subject
Tarannum Mansoori +2 more
doaj +1 more source
Effect of Large-Scale Structure on Multiply Imaged Sources [PDF]
, 1995 We study the effects of large-scale density fluctuations on strong gravitational lensing. Previous studies have focused mostly on weak lensing, since large-scale structure alone cannot produce multiple images.
Bar-Kana, Rennan
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