Results 281 to 290 of about 42,651 (303)
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Subjective and objective measurement of human accommodative amplitude
Journal of Cataract and Refractive Surgery, 2003To assess objective and subjective methods to measure accommodation in a young human population.Research laboratory, University of Houston, College of Optometry, Houston, Texas, USA.Accommodation was measured in the right eye of 15 young subjects (9 women and 6 men) whose ages ranged from 23 to 28 years and 1 36-year-old subject.
Jon E, Wold +3 more
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Repeatability of clinical measurements of the amplitude of accommodation
Ophthalmic and Physiological Optics, 1996SummaryIn order to determine whether a significant change has occurred in a clinical parameter, it is essential to assess the repeatability of the measurement procedure. Accordingly, the present study has examined the repeatability of three techniques for evaluating the subjective amplitude of accommodation.
M, Rosenfield, A S, Cohen
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Comparing the Amplitude of Accommodation Determined Objectively and Subjectively
Optometry and Vision Science, 1993The purpose of this study was to determine if differences exist between subjective and objective methods of measuring the amplitude of accommodation. In a double-masked study on 57 patients, ages 6 to 35 years, 2 examiners measured the amplitude, 1 using the subjective push-up method and the other using a modified form of dynamic retinoscopy ...
R P, Rutstein, P D, Fuhr, J, Swiatocha
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Apparent Image Quality of Magnifiers Depends on Amplitude of Accommodation
Optometry and Vision Science, 1994We investigated the importance of the role of amplitude of accommodation in assessing the usefulness of magnifiers. Accommodation must be exerted to scan across the image produced by a magnifier that exhibits astigmatism and curvature of field. In general, increasing amounts of negative accommodation are required to scan from the center to the edge of ...
M, Katz, G, Zikos
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[Amplitude of accommodation in Zairian subjects].
Journal francais d'ophtalmologie, 1989The authors studied the amplitude of accommodation in Zairian patients who consulted the Ophthalmic Clinic of University of Kinshasa from February 24 to July 31, 1986. During this period, of 1326 Zairians seen, 159 (318 eyes) were included in this study. Patients with monocular visual acuities less than 10/10, or with ocular pathology, astigmatisms and
K, Kaimbo, K, Maertens, L, Missotten
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Effect of timolol on the amplitude and dynamics of accommodation
Documenta Ophthalmologica, 1989There is still debate about whether the ciliary muscle is innervated by the sympathetic nervous system. We investigated the amplitude and the dynamics of accommodation under influence of the non-selective beta-blocker timolol. For this purpose the variations in thickness of the human lens during step-like changes in accommodation were measured with ...
J, Weber +2 more
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THE AMPLITUDE OF ACCOMMODATION IN PRESBYOPIA
Optometry and Vision Science, 1956D, HAMASAKI, J, ONG, E, MARG
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DEPTH OF FOCUS AND AMPLITUDE OF ACCOMMODATION THROUGH TRIFOCAL GLASSES
Archives of Ophthalmology, 1953MANY STUDIES have been made of the "amplitude of accommodation" in presbyopia, but there has been little attempt to measure its component parts. Since it is a complex of active accommodation, depth of focus, and interpretation or suppression of blur fringes, the old term should be changed to "range of clear vision." Many textbooks contain figures for ...
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COMPARISON OF ACCOMMODATIVE AMPLITUDE DETERMINATION METHODS
Optometry and Vision Science, 1994Mary Beth Woehrle +2 more
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