Results 171 to 180 of about 25,242 (204)
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Ophthalmology Clinics of North America, 2003
As distinguished from measuring the ability to see at the location where the eye's gaze is fixated, perimetry consists of determining the visual capabilities throughout the field of vision. Traditionally the ability to see a white object or a projected spot of white light is determined and quantified under standard conditions.
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As distinguished from measuring the ability to see at the location where the eye's gaze is fixated, perimetry consists of determining the visual capabilities throughout the field of vision. Traditionally the ability to see a white object or a projected spot of white light is determined and quantified under standard conditions.
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Acta Ophthalmologica, 1986
Abstract A large absolute paracentral ring scotoma was found in both eyes of a 60‐year‐old woman with progressive cone dysfunction but with normal rod function using for the perimetry a white tangential screen of 200 cd/m2 luminance and a 632 nm laser test light.
V, Elenius, M, Leinonen
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Abstract A large absolute paracentral ring scotoma was found in both eyes of a 60‐year‐old woman with progressive cone dysfunction but with normal rod function using for the perimetry a white tangential screen of 200 cd/m2 luminance and a 632 nm laser test light.
V, Elenius, M, Leinonen
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Acta Ophthalmologica, 1976
In static perimetry the method of limits is widely used for threshold determinations. Its performance is compared with that of a certain modification of the staircase method (repetitive up and down method) by means of simulations, where the behaviour of the observer is described by an assumed psychometric function.
H, Bebie, F, Fankhauser, J, Spahr
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In static perimetry the method of limits is widely used for threshold determinations. Its performance is compared with that of a certain modification of the staircase method (repetitive up and down method) by means of simulations, where the behaviour of the observer is described by an assumed psychometric function.
H, Bebie, F, Fankhauser, J, Spahr
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Ophthalmology, 1985
This study presents a preliminary comparison of six commercially-available automated threshold static parameters, consisting of three projection perimeters (Humphrey Field Analyzer, Squid, and Octopus 500) and three light-emitting diode (LED) perimeters (Dicon 2000, Fieldmaster 50, and Digilab 350).
J L, Keltner, C A, Johnson, R A, Lewis
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This study presents a preliminary comparison of six commercially-available automated threshold static parameters, consisting of three projection perimeters (Humphrey Field Analyzer, Squid, and Octopus 500) and three light-emitting diode (LED) perimeters (Dicon 2000, Fieldmaster 50, and Digilab 350).
J L, Keltner, C A, Johnson, R A, Lewis
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HPR perimetry and Humphrey perimetry in glaucomatous children
Documenta Ophthalmologica, 1995Fifteen children aged less than 11 years, affected by congenital glaucoma, underwent visual field testing using two different methods: conventional computerized perimetry (24-2 Humphrey program) and High Pass Resolution perimetry (Ring test). The aim of the study was to discover which of the two perimetric techniques was more suitable for younger ...
M. Marraffa +5 more
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Archives of Ophthalmology, 1979
To the Editor. —In studying the article by Trobe and Glaser (Archives96:1210-1216, 1978), I was struck by two facets that deserve mention. First, the authors refer to a color saturation difference at the vertical meridian as a hemiachromatopsia. Theoretically, the authors are actually defining a hemidyschromatopsia since there is a dysfunction of ...
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To the Editor. —In studying the article by Trobe and Glaser (Archives96:1210-1216, 1978), I was struck by two facets that deserve mention. First, the authors refer to a color saturation difference at the vertical meridian as a hemiachromatopsia. Theoretically, the authors are actually defining a hemidyschromatopsia since there is a dysfunction of ...
openaire +2 more sources