Principles of Quantitative Perimetry: Testing and Interpreting the Visual Field |
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Page 11
... blind spot may be present in the visual field without the subject's being aware of it . The presence of the optic nerve head , a communication channel with no sensory capability , causes a normal blind spot in each eye . The reader may ...
... blind spot may be present in the visual field without the subject's being aware of it . The presence of the optic nerve head , a communication channel with no sensory capability , causes a normal blind spot in each eye . The reader may ...
Page 31
... blind spot . Test objects move inward through the shaded unseen periphery and the unshaded crescent until they are reported . The same test object moves outward through the normal blind spot , across the border where the test was ...
... blind spot . Test objects move inward through the shaded unseen periphery and the unshaded crescent until they are reported . The same test object moves outward through the normal blind spot , across the border where the test was ...
Page 266
... spot 10 ° to 20 ° outside of the corresponding isopter and asks the patient if he or she can see it . Upon receiving ... blind spot is mapped in the routine fashion and a large , bright test spot pre- sented in its center . If no ...
... spot 10 ° to 20 ° outside of the corresponding isopter and asks the patient if he or she can see it . Upon receiving ... blind spot is mapped in the routine fashion and a large , bright test spot pre- sented in its center . If no ...
Contents
12345 | 1 |
Indications for Perimetry and the Perimetrist | 145 |
7 | 186 |
Copyright | |
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activity adaptation addition appear artery background bipolar blind spot cause cells central central scotoma clinical color complete constant corresponding curve dark determined device direction disc disease effect examiner fibers field defects Figure fixation flicker frequently function ganglion cells given glaucoma Goldmann hemianopsia horizontal illumination important increase intensity involved island isopter kinetic lateral layer lesions less light limits luminance mark measure movement moving nasal normal Note obtained occurs Ophthalmol optic optic nerve patient pattern performance perimeter perimetrist perimetry peripheral person plotted position possible present problem projected pupil receptor Relative response retina scotoma screen seen sensitivity side similar slope standard static step stimulus studies summation superior surface surround technique temporal test object threshold types unit usually varies vision visual field whereas