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New approximation for the whole profile of the human crystalline lens
  • H. Kasprzak
  • Medicine
  • Ophthalmic & physiological optics : the journal…
  • 1 January 2000
TLDR
A new approximation for the whole profile of the human crystalline lens by the use of only one analytical function for both unaccommodated lens and the lens on accommodation is presented and can be used for the description of iso‐indical profiles inside the lens. Expand
New approximation for the whole profile of the human crystalline lens.
This paper presents a new approximation for the whole profile of the human crystalline lens by the use of only one analytical function for both unaccommodated lens and the lens on accommodation.Expand
Corneal shape change during accommodation
TLDR
The study suggests that accommodation may have some effect on corneal shape, and in 11 of the 14 subjects a difference in centralCorneal curvature was found when focus was changed between distant and near targets. Expand
Selected parameters of the corneal deformation in the Corvis tonometer
TLDR
The paper presents the possibility of using a profiled algorithm of image analysis, proposed by the authors, to measure additional cornea deformation parameters, and enables automatic measurement of the additional new parameters when using the Corvis tonometer. Expand
Modelling the elastic properties of the anterior eye and their contribution to maintenance of image quality: the role of the limbus
TLDR
There may be an optimal limbal modulus that must be balanced with the moduli of cornea and sclera for preservation of image quality, and a peak in the value of Young's modulus of the limbus is suggested. Expand
Spectral characteristics of longitudinal corneal apex velocities and their relation to the cardiopulmonary system
TLDR
The differences in propagation of pulse harmonics to the corneal apex velocities for different subjects suggest that the frequency characteristics of apex velocity could be related to pulsative variations in the intraocular pressure and biomechanical properties of the eye. Expand
Analysis of shearing interferograms of tear film using fast fourier transforms.
TLDR
A new method for evaluating tear film stability on the human eye is reported, and the tear breakup time can be evaluated noninvasively by comparing the value of the second momentum of Fourier spectra calculated from the consecutive interferograms. Expand
Interferometric measurements of dynamic changes of tear film.
TLDR
An interferometric method for assessing the stability of precorneal tear film in real time is presented and the favorable influence of artificial tears applied in patients with dry-eye syndrome or contact lenses is discussed. Expand
Dynamics in longitudinal eye movements and corneal shape
TLDR
Understanding the nature of dynamic changes in the eye movements will be of benefit in ophthalmic applications requiring highly accurate measurements of corneal shape, such as contact lens design and refractive surgery. Expand
Generalized algorithm for photoelastic measurements based on phase-stepping imaging polarimetry.
TLDR
A general method for measuring the birefringence of nondichroic, linear retarder media based on phase-stepping imaging polarimetry and permits the azimuth angle, phase retardation, and transmission coefficient of a sample to be calculated. Expand
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