Now showing items 1-10 of 30
Ganglion cell acuity in hooded rats
(Elsevier, 1982)
Previous measurements of retinal ganglion cell acuity in hooded rats have differed significantly from behavioral tests of visual acuity. One possible source of this discrepancy is examined--that light deprivation in early ...
Assessment of foveal cone photoreceptors in Stargardt's macular dystrophy using a small dot detection task
(Elsevier, 1993-07)
We measured frequency-of-seeing curves for tiny (1.125 and 3.375 min arc) stimuli flashed briefly at absolute threshold to estimate the density of foveal cones in normals and in subjects with Stargardt's macular dystrophy. ...
Extrinsic current and flash sensitivity in turtle cones
(Elsevier, 1994-02)
The effects of hyperpolarizing current and background light on intracellular responses of red cones in turtle were compared. Even though a background light always reduced response amplitude, hyperpolarizing current did so ...
Flicker fusion characteristics of rod photoreceptors in the toad
(Elsevier, 1983)
Critical fusion frequency (CFF) of toad rods was examined at various intensities using intracellular recordings. Data were compared to CFF measurements (as a function of intensity) obtained with the electroretinogram (ERG) ...
Management of eyelid trauma
(Blackwell Publishing Ltd, 1991-11)
The management of eyelid trauma presents some frustrating challenges to the general ophthalmologist. Because each case is unique, adaptation of general principles is essential for optimal ophthalmic treatment. This review ...
Relative modulation sensitivities of the red and green color mechanisms
(Elsevier, 1978)
The sensitivities of the human green and red cone mechanisms to sinusiodally flickering light were found to be near equal and independent of field size and estimation method. No wavelength dependency of modulation sensitivity ...
Depth of focus, eye size and visual acuity
(Elsevier, 1980)
We develop formulas for calculating the approximate depth of focus of any eye. They show that the magnitude of depth of focus is inversely proportional to the size of the eye and to its visual acuity. One particular ...
Evidence for a power law intensity code in the coupled cones of the turtle
(Elsevier, 1990)
The hyperpolarizing responses to light were recorded intracellularly from red cones of the turtle, Pseudemys scripta elegans. Pairs of slit stimuli were flashed alone or together at various intensities, one slit positioned ...