Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Lars Frisén"'
Autor:
Christina Winther, Lars Frisén
Publikováno v:
Journal of Ophthalmology, Vol 2015 (2015)
Purpose. There is a need for efficient self-tests of vision in patients with neovascular age-related macula degeneration. A new tablet/smartphone application aiming to meet this need is described and its performance is assessed in a longitudinal pilo
Externí odkaz:
https://doaj.org/article/6e8f79d4a14d4a11922fd1430d7a4e2d
Autor:
Lars Frisén
Publikováno v:
Ophthalmology. 123(8)
Autor:
Lars Frisén
Publikováno v:
Optometry and Vision Science. 89:1192-1195
Purpose Rarebit vision tests probe for gaps in the neuro-retinal receptive field matrix, using bright micro dots on a dark background. Previous reports have found central-vision rarebit tests useful for macular lesions. Their performance with lesions
Postural function and subjective eye level in patients with idiopathic normal pressure hydrocephalus
Publikováno v:
Journal of Neurology. 258:1341-1346
Disturbance of posture is a frequent indication of idiopathic normal pressure hydrocephalus (iNPH) and is characterised by an increased sway in the frontal and sagittal planes. Further, iNPH patients with increased backward sway are known to have a d
Autor:
Lars Frisén
Publikováno v:
British Journal of Ophthalmology. 94:97-100
Background: The term super-resolution refers to computational enhancement of detail in sets of similar images, particularly undersampled images. Undersampling is a key feature of visual disorders associated with neuroretinal matrix damage. It is conc
Autor:
Johan Sjöstrand, Lars Frisén
Publikováno v:
Acta Ophthalmologica. 55:507-514
Psychophysical measurements of contrast thresholds for sinusoidal gratings of variable frequency were made in normal controls and in patients with macular disease. Normal controls showed a U-shaped contrast sensitivity function comparable with previo
Autor:
Lars Frisén, Marianne Frisén
Publikováno v:
Acta Ophthalmologica. 54:437-444
Throughout the retina, the parameters of the probability distribution of visual acuity for monochromatic interference fringes are closely proportional to the number of retinal ganglion cells per degree of visual angle. There are no simple relationshi
Autor:
Lars Frisén
Publikováno v:
Acta Ophthalmologica. 52:373-377
Light-emitting diodes make appropriate test objects for the tangent screen because of their adjustability, longevity, and well-defined stimulus properties. A prototype wand is described that provides seven luminance levels differing by a factor of 0.
Autor:
Marianne Frisén, Lars Frisén
Publikováno v:
Acta Ophthalmologica. 53:378-392
We have examined the hypothesis that normal and only normal isopters of the central visual field are elliptical, except for random deviations. Statistical methods capable of recognizing small deviations from elliptical shape have been developed. Thes
Autor:
F. Nikolajeff, Lars Frisén
Publikováno v:
Acta Ophthalmologica. 71:320-326
Relationships between high-pass resolution perimetry ring targets and conventional perimetry and acuity targets were explored by optical analytical techniques and by comparative measurements in normal humans. High-pass resolution and acuity targets p