نتایج جستجو برای: wavelength automated perimetry
تعداد نتایج: 194549 فیلتر نتایج به سال:
PURPOSE To investigate the relationship between retinal light sensitivity measured with standard automated perimetry (SAP) and retardation of the peripapillary retinal nerve fiber layer (RNFL) measured with the GDx VCC (Laser Diagnostic Technologies, Inc., San Diego, CA). METHODS Forty-seven healthy subjects and 101 patients with glaucoma were examined with SAP and with the commercially avail...
OBJECTIVE To compare the association between scanning laser polarimetry (SLP) retinal nerve fiber layer (RNFL) measurements and automated perimetry sensitivity using both SLP manufacturer-assumed fixed and subject-specific variable corneal polarization magnitude and corneal polarization axis values. METHODS An SLP was modified to enable the measurement of corneal polarization magnitude and co...
This prospective study aimed to evaluate the stimulus velocity for automated kinetic perimetry based on the test duration, the kinetic sensitivity, and the variability of the kinetic sensitivity in 31 eyes of 31 young healthy participants. Automated kinetic perimetry was performed using an Octopus 900 perimeter with Goldmann stimuli III4e, I4e, I3e, I2e, and I1e. The participants underwent test...
Sparing or partial recovery of visual fields in hemianopic patients is frequently difficult to document. This is because when testing large field losses, the standard automated or manual visual field testing systems have limited fixation controls. Measured visual field recovery in these cases may not be real but instead may be due to an artifact such as scanning eye movement. This article illus...
PURPOSE To investigate the effect of perimetrists' instructions on automated perimetry thresholds. METHODS Eighteen volunteers in two age groups participated in a series of three test sessions. Each session consisted of a Humphrey Field Analyzer 30-2 test, a questionnaire, and a customized test program using a Humphrey perimeter to construct frequency of seeing (FOS) curves from which thresho...
et al. The use of vitamin supplements and risk of cataract among US male physicians.
PURPOSE To evaluate short-wavelength-sensitive perimetry in the detection of glaucomatous field loss. METHODS The sample consisted of 27 normal subjects, 24 patients with primary open angle glaucoma (POAG), and 27 patients with ocular hypertension (OHT). Blue-on-yellow (B-Y) and standard (W-W) perimetry was undertaken with a modified Humphrey Field Analyzer 640 on one eye of each subject and ...
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