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pro vyhledávání: '"R. D. van Gool"'
Autor:
W. F. Harris, R. D. van Gool
Publikováno v:
African Vision and Eye Health, Vol 68, Iss 3, Pp 111-129 (2009)
In generalized optical systems, that is, in systems which may contain thin refracting elements of asymmetric dioptric power, pencils of rays may exhibit phenomena that cannot occur in conventional optical systems. In conventional optical systems asti
Externí odkaz:
https://doaj.org/article/52202176966a400ba69fc1dac612f4b7
Autor:
W. F. Gool, R. D. van Gool
Publikováno v:
African Vision and Eye Health, Vol 68, Iss 4, Pp 176-179 (2009)
If an intraocular lens is displaced or if its power is changed what are the consequences for the refractive compensation of the eye? Gaussian optics is used to obtain explicit formulae for the sensitivityof the corneal-plane refractive compensation (
Externí odkaz:
https://doaj.org/article/adeae22f82bd4e13805167faf513ecf1
Autor:
W. F. Harris, R. D. van Gool
Publikováno v:
African Vision and Eye Health, Vol 68, Iss 2, Pp 52-60 (2009)
It is generally supposed that thin systems, including refracting surfaces and thin lenses, have powers that are necessarily symmetric. In other words they have powers which can be represented assymmetric dioptric power matrices and in the familar sph
Externí odkaz:
https://doaj.org/article/30bd3186c61b482694eb527946f1df5e
Autor:
R. D. van Gool
Publikováno v:
African Vision and Eye Health, Vol 64, Iss 2, Pp 38-43 (2005)
For most quantitative studies one needs to calculate an average. In the case of refraction an average is readily computed as the arithmetic average of dioptric power matrices. Refraction, however, is only one aspect of the first-order optical charact
Autor:
William F. Harris, R. D. Van Gool
Publikováno v:
Optometry and Vision Science. 74:445-451
Autorefractor measurements were taken on the right eye of 10 students with an external target at vergences -1.00 and -3.00 D. The refractive errors in the form of sphere, cylinder, and axis were converted to vectors h and variance-covariance matrices
Autor:
William F. Harris, R. D. van Gool
Publikováno v:
African Vision and Eye Health, Vol 68, Iss 3, Pp 111-129 (2009)
In generalized optical systems, that is, in systems which may contain thin refracting elements of asymmetric dioptric power, pencils of rays may exhibit phenomena that cannot occur in conventional optical systems. In conventional optical systems asti
Autor:
William F. Harris, R. D. van Gool
Publikováno v:
African Vision and Eye Health, Vol 68, Iss 2, Pp 52-60 (2009)
It is generally supposed that thin systems, including refracting surfaces and thin lenses, have powers that are necessarily symmetric. In other words they have powers which can be represented assymmetric dioptric power matrices and in the familar sph
Publikováno v:
Ophthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 27(5)
The ray transference matrix completely characterises the first-order optical nature of an optical system including the eye. It is in terms of the transference that quantitative analyses (for example, calculation of an average eye) can be performed. H
Publikováno v:
Optometry and vision science : official publication of the American Academy of Optometry. 79(7)
A corrected or uncorrected human eye may be astigmatic and noncoaxial. The first-order (i.e., paraxial) character of arbitrary astigmatic and noncoaxial optical systems can be compared quantitatively in terms of the ray transference of either an ante
Autor:
William F. Harris, R. D. Van Gool
Publikováno v:
Optometry and vision science : official publication of the American Academy of Optometry. 78(11)
The purpose of this article was to present a complete and general method for comparing the first-order optical character of optical systems. The method provides a common basis for quantifying the difference between systems of all kinds including thin