Results 151 to 160 of about 11,434,288 (193)

Frequency-doubling technology perimetry

Ophthalmology Clinics of North America, 2003
The FDT perimeter is a compact and relatively inexpensive perimeter whose transportability, tolerance to refractive errors, and rapid test times (less than 1 minute per eye) make it a suitable candidate for visual field screening. It is a uniform finding that the C-20-1 screening protocol of the FDT perimeter provides good sensitivity and specificity ...
Andrew J, Anderson, Chris A, Johnson
openaire   +4 more sources

Conventional Perimetry, Short-Wavelength Automated Perimetry, Frequency-Doubling Technology, and Visual Evoked Potentials in the Assessment of Patients With Multiple Sclerosis

European Journal of Ophthalmology, 2005
PU R P O S E. To evaluate the diagnostic power of conventional, achromatic, automated perimetry (CAP), shortwavelength automated perimetry (SWAP), frequency-doubling technology (FDT) perimetry, and visual evoked potentials (VEP) in a group of patients ...
Fabio Bandini, Antonio Uccelli, M Papadia   +2 more
exaly   +2 more sources

Relationship of SITA and Full-Threshold Standard Perimetry to Frequency-Doubling Technology Perimetry in Glaucoma

Investigative Ophthalmology and Visual Science, 2005
To compare full-threshold (FT) and SITA algorithms for standard automated perimetry (SAP) with frequency-doubling technology perimetry (FDT) in glaucoma, to help clinicians to relate results in patients who have had two or more of these tests during follow-up.This study was a retrospective analysis of data from a longitudinal prospective study at the ...
Makoto Aihara, Robert N Weinreb, Catherine Boden   +2 more
exaly   +3 more sources

Frequency Doubling Technology perimetry and standard automated perimetry in migraine

Ophthalmic and Physiological Optics, 2005
Abstract The literature suggests that visual field defects may be more common in people who experience migraine. The Humphrey frequency doubling (FDT) visual field instrument selectively examines the magnocellular visual pathway, but has not previously been used to investigate visual function in migraine.
Deacon E, Harle, Bruce J W, Evans
openaire   +2 more sources

Frequency Doubling Technology Perimetry in Normal Children

American Journal of Ophthalmology, 2006
To test visual field thresholds of normal children with frequency doubling technology (FDT) perimetry to quantify testing times and reliability characteristics in a pediatric population and to determine whether current methods of stratifying adult threshold values need revision for children.Prospective cross-sectional study.Ninety-four children, ages 5
Laurel M, Quinn, Stuart K, Gardiner, David T, Wheeler, Michelle, Newkirk, Chris A, Johnson   +4 more
openaire   +2 more sources

Effect of cataract extraction on frequency doubling technology perimetry

American Journal of Ophthalmology, 2004
To investigate the effect of cataract extraction on the results of frequency doubling technology (FDT) perimetry in healthy subjects.Single-center, prospective, case series.We performed FDT threshold C20-1 and Humphrey Swedish Interactive Threshold Algorithm (SITA)-fast programs within 1 month before and 2 months after phacoemulsification in 52 ...
Michael S, Kook, Sung Jae, Yang, Suhyun, Kim, Jiyong, Chung, Soon-Tae, Kim, Hungwon, Tchah   +5 more
openaire   +2 more sources

Normal Aging Effects for Frequency Doubling Technology Perimetry

Optometry and Vision Science, 1999
ABSTRACT: Purpose. To determine the influence of normal aging on contrast sensitivity for frequency doubling technology (FDT) perimetry. Methods.
C W, Adams, M A, Bullimore, M, Wall, M, Fingeret, C A, Johnson   +4 more
openaire   +2 more sources

Impact of cataract on the results of frequency-doubling technology perimetry

Ophthalmology, 2004
To determine the effect of cataract on the results of frequency-doubling technology (FDT) perimetry.Consecutive cohort study.Forty-four patients with normal ophthalmic examinations, with the exception of cataract, scheduled to undergo phacoemulsification and posterior chamber lens implantation were prospectively identified and completed the study.All ...
Angelo P, Tanna, Charlie, Abraham, Jerry, Lai, Joy, Shen   +3 more
openaire   +2 more sources

Relationship between Indices of Humphrey Perimetry and Frequency Doubling Technology Perimetry in Glaucoma

Journal of Glaucoma, 2004
To study whether the correlation between indices of Humphrey perimetry and Frequency Doubling Technology (FDT) perimetry differs in the early and later stages of glaucoma.This study included 200 eyes of 200 patients with primary open-angle glaucoma or normal-tension glaucoma. The eyes were classified into the early and later stages by the median value (
Atsushi, Fukushima, Motohiro, Shirakashi, Kiyoshi, Yaoeda, Shigeo, Funaki, Haruko, Funaki, Nobutaka, Ofuchi, Haruki, Abe   +6 more
openaire   +2 more sources

Frequency Doubling Technology and High-Pass Resolution Perimetry in Glaucoma and Ocular Hypertension [PDF]

Acta Ophthalmologica, 2003
Abstract.Purpose:  To study the correlation between frequency doubling technology perimetry (FDT) and high‐pass resolution perimetry (HRP) in eyes with primary open‐angle glaucoma, suspect glaucoma, ocular hypertension, and in normal eyes.Patients and Methods:  Ninety‐four patients (162 eyes) were studied.
Lada Kalaboukhova
exaly   +3 more sources