Results 261 to 270 of about 41,303 (288)
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Detection system for ocular refractive error measurement
Physics in Medicine and Biology, 1998An automatic and objective system for measuring ocular refractive errors (myopia, hyperopia and astigmatism) was developed. The system consists of projecting a light target (a ring), using a diode laser (lambda = 850 nm), at the fundus of the patient's eye.
L, Ventura +2 more
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Refractive error and ocular motility in plagiocephaly
Child's Nervous System, 1994Plagiocephaly, which is caused by premature closure of one of the coronal sutures, leads to fronto-orbital asymmetry. The aim of this work was to study the repercussions of orbital deformation on the visual system. Twenty-one patients presenting with plagiocephaly at birth and operated on by the same craniofacial technique (bilateral approach with ...
D, Denis +5 more
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Heritability of refractive value and ocular biometrics
Experimental Eye Research, 2008The aim of this work was to analyse genetic influences on ocular refractive value and axial length using the hypothesis of a polygenic control. The genealogical records of 55 families were used in the analyses. The cohort included 723 individuals and clinical data were collected for 445 individuals with a mean age of 37.86 years.
Paget, Sandrine +3 more
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Ocular surface and refractive surgery
Acta Ophthalmologica, 2011AbstractPurpose Dry eye represents nowadays the most common complication after PRK and even more frequent after lasik. Preoperative dry eye constitutes a risk factor for postoperative severe dryness; that it why it appears crucial to detect and treat surface disorder before the surgery.Methods We will remind the list and hierarchy of tests available ...
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Ocular Dimensions and Refraction in Tibetan Children
Optometry and Vision Science, 1995A cross-sectional study of 404 Tibetan children (212 males, 192 females) aged 6 to 16 years was conducted in the Bouda region of Kathmandu, Napal in April, 1992. Examination procedures included retinoscopy (1% cyclopentolate HCl), keratometry A-scan ultrasonography, and video ophthalmophakometry.
L F, Garner +3 more
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Influence of laser polarization on ocular refractive parameters after refractive surgery
Optics Letters, 2004We provide an adjustment factor for ablation algorithms used in photorefractive laser surgery that takes into account how laser polarization in reflection losses affects the cornea. We evaluate the influence of this factor on corneal radius and asphericity after surgery, showing that it is significant for visual performance (effective visual acuity is ...
José R, Jiménez +3 more
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Segregation Analysis of Ocular Refraction and Myopia
Human Heredity, 1985Segregation analysis of ocular spherical refraction data using a unified model resulted in rejection of a Mendelian hypothesis of genetic transmission in nuclear families of both Japanese and European ancestries. Similar analyses of families which included at least 1 myope gave no evidence for the hypothesis that myopia is determined in part by a major
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Ocular refraction with body orientation.
Aviation, space, and environmental medicine, 1989Body inversion is used experimentally to raise the intraocular pressure (IOP). Psychophysical and electrophysiological methods of assessing visual function in artificially raised IOP are generally influenced by the clarity of the retinal image. It is therefore essential to be aware of any changes in ocular refraction induced by changes in body ...
J V, Lovasik, A C, Kothe
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RE: ENVIRONMENTAL INFLUENCES ON OCULAR REFRACTION
American Journal of Epidemiology, 1982J C, Bear, A, Richler
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