Foveal Colour Sensitivity
نویسندگان
چکیده
منابع مشابه
Contrast sensitivity and foveal microstructure following vitrectomy for epiretinal membrane.
PURPOSE To evaluate contrast sensitivity (CS) in patients with epiretinal membrane (ERM) following vitrectomy and to investigate the relationship between CS and foveal microstructures with spectral-domain optical coherence tomography (SD-OCT). METHODS Thirty-one eyes of 31 patients with ERM were included. We examined CS with a CSV-1000E chart, a logMAR best-corrected visual acuity (BCVA), and...
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Photopic directional sensitivity was measured at the fovea and at 2°, 3.75°, and 10° from fixation (referred to the center of the entrance pupil of the eye; nonfoveal tests were conducted in the nasal field projected onto temporal retina). These data confirm and extend an earlier experiment performed by Westheimer. The central fovea exhibited significantly less directionality than parafoveal te...
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OBJECTIVE To demonstrate differences in foveal contrast sensitivity (CS) between glaucomatous and nonglaucomatous eyes using a simple, rapid computerized test. METHODS This study included consecutive patients with glaucoma (35 eyes) and age-matched control participants (23 eyes) with visual acuity of 20/30 or better. Patients with any other ocular disease, including cataract, were excluded. A...
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Foveal light detection sensitivity was evaluated in 348 volunteers covering a large age range using an automated perimetry performed in the Humphrey Field Analyzer II. Foveal sensitivity was measured using the Humphrey’s 4–2 bracketing strategy with a 30 dB initial stimulus intensity, at an inferior visual field location, a 0.431 (4mm 2 , viewed at 30 cm; Goldmann III) spot of white light is pr...
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ژورنال
عنوان ژورنال: Nature
سال: 1946
ISSN: 0028-0836,1476-4687
DOI: 10.1038/157805a0