Results 161 to 170 of about 11,434,288 (193)

Frequency doubling technology perimetry for detection of glaucomatous visual field loss

American Journal of Ophthalmology, 2000
To evaluate the ability of frequency doubling technology perimetry to detect early, moderate, and advanced glaucomatous visual field loss.In a prospective study, frequency doubling technology perimetry (C-20 full threshold) was performed in the right eye of 254 normal control subjects and 230 patients with early (n = 85), moderate (n = 114), or ...
K E, Cello, J M, Nelson-Quigg, C A, Johnson   +2 more
openaire   +2 more sources

Optimizing the Use of Frequency Doubling Technology Perimetry in Community Vision Screenings

Optometry and Vision Science, 2008
ABSTRACT Purpose. In recent years, Frequency Doubling Technology perimetry (FDT) has been added to traditional ocular health testing in screening for glaucoma. This study examines a number of strategies to employ FDT in an effort to determine its optimal use in large community screenings.
Leon, Nehmad, Richard J, Madonna
openaire   +2 more sources

Frequency Doubling Technology Perimetry With the Humphrey Matrix 30-2 Test

Journal of Glaucoma, 2006
To assess the Humphrey Matrix 30-2 test in detecting functional glaucomatous damage.One eye in each of 60 healthy individuals, 108 patients with ocular hypertension (OHT), and 150 patients with preperimetric (48) or perimetric (102) high-tension primary open-angle glaucoma (POAG) were considered.
Paolo, Brusini, Maria Letizia, Salvetat, Marco, Zeppieri, Lucia, Parisi   +3 more
openaire   +2 more sources

Reliability of the First Eye and Second Eye in Frequency Doubling Technology Perimetry

Japanese Journal of Ophthalmology, 2005
To compare the reliability of the perimetry results of the first eye and the second eye with frequency doubling technology (FDT).The subjects were 328 residents who underwent the C-20-5 mode of FDT at a city in central Japan. FDT perimetry was always performed first in the right eye and then in the left eye without any time between tests.
Satoshi, Mukai, Hidetoshi, Tsukamoto, Aiko, Iwase, Hiromu K, Mishima   +3 more
openaire   +2 more sources

The Results of Screening Frequency Doubling Technology Perimetry in Different Locations of the Community

Journal of Glaucoma, 2007
To determine the effect of screening location on the frequency of abnormal test results with Frequency Doubling Technology (FDT) perimetry.Retrospective cross-sectional study.The Vision Screening Outreach Project conducted FDT testing in community sites surrounding Portland, Oregon.
Steven L, Mansberger, Chris A, Johnson, George A, Cioffi   +2 more
openaire   +2 more sources

An Evaluation of Algorithms Designed to Classify the Results From Frequency Doubling Perimetry

Ophthalmic and Physiological Optics, 2004
All previously published algorithms for the interpretation of frequency doubling perimetry test results were compared in full-threshold mode in a large group of glaucoma patients (n = 452) and normal subjects (n = 237). Areas under the receiver-operating
Nomdo M Jansonius, Govert P Heeg
exaly   +1 more source

Frequency Doubling Technology Perimetry Using a 24‐2 Stimulus Presentation Pattern

Optometry and Vision Science, 1999
ABSTRACT: Purpose. To assess whether smaller targets and a 24‐2 stimulus presentation pattern would improve the ability of frequency doubling technology (FDT) perimetry to detect and characterize early glaucomatous visual field loss ...
C A, Johnson, G A, Cioffi, E M, Van Buskirk   +2 more
openaire   +2 more sources

Standard achromatic perimetry, short wavelength automated perimetry, and frequency doubling technology for detection of glaucoma damage

Ophthalmology, 2002
Reevaluation of the relationship between short wavelength automated perimetry (SWAP), standard achromatic perimetry (SAP), and frequency doubling technology (FDT) in glaucoma and ocular hypertensive patients and in glaucoma suspects.Prospective comparative observational study.Four age-matched groups were evaluated (42 patients with early to moderate ...
Soliman, Mohamed A. E., de Jong, Leo A. M. S., Ismaeil, Al-Araby A., van den Berg, Thomas J. T. P., de Smet, Marc D.   +4 more
openaire   +2 more sources

Short Wavelength and Frequency Doubling Technology Perimetry

2019
Short Wavelength Automated Perimetry (SWAP) is based on the principal to evaluate different retinal ganglion cells population. SWAP detects the visual field defects by testing sensitiveness to short—wavelength (blue-yellow light) by isolating S cone system and reducing the participation of other cone systems (red—long wavelength, green—medium ...
openaire   +1 more source

Frequency doubling technology perimetry abnormalities as predictors of glaucomatous visual field loss

American Journal of Ophthalmology, 2004
To determine whether frequency doubling technology (FDT) perimetry results predict glaucomatous visual field defects, as assessed by standard automated perimetry (SAP), in a glaucoma suspect population.Longitudinal observational study.The study included 105 eyes of 105 glaucoma suspect patients, with a mean follow-up time of 41 +/- 17 months.
Felipe A, Medeiros, Pamela A, Sample, Robert N, Weinreb   +2 more
openaire   +2 more sources