Results 171 to 180 of about 1,687 (210)

Rarebit Perimetry and Frequency Doubling Technology in Patients with Ocular Hypertension

European Journal of Ophthalmology, 2008
Purpose To test the capability of rarebit perimetry (RP), a recent non-conventional perimetric technique, in detecting early functional damage in subjects with ocular hypertension (OHT) and to compare RP findings with those obtained by frequency-doubling technology (FDT) perimetry. Methods Thirty patients with OHT were matched with 30 healthy subjects.
CORALLO, GUIDO, IESTER, MICHELE, R. Scotto, CALABRIA, GIOVANNI, TRAVERSO, CARLO   +4 more
openaire   +3 more sources

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

Frequency Doubling Technology Perimetry After Clear and Yellow Intraocular Lens Implantation

American Journal of Ophthalmology, 2006
To evaluate the effect of intraocular lens (IOL) color on frequency doubling technology (FDT).Randomized clinical trial.For 26 eyes of 26 patients, FDT perimetry (24-2-threshold test) was measured three months after cataract surgery. An acrylic IOL was randomly selected from clear (VA60BB, HOYA) and yellow-tinted lenses (YA60BB, HOYA), which only ...
Tetsuo, Ueda, Takeo, Ota, Eiichi, Yukawa, Yoshiaki, Hara   +3 more
openaire   +2 more sources

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

Optometry and Vision Science, 1999
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.One hundred normal subjects between the ages of 20 and 85 participated in this study.
C A, Johnson, G A, Cioffi, E M, Van Buskirk   +2 more
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

Correlation between frequency doubling technology perimetry and temporal frequency characteristics in early glaucoma*

Documenta Ophthalmologica, 2003
To assess the effectiveness of the temporal frequency characteristics (TFC) as an indicator of visual damage in patients with early open-angle glaucoma, TFC obtained from VEPs elicited by a pseudorandom binary sequence (PRBS) stimulus was compared with the frequency doubling technology (FDT) thresholds. Cross power spectrum between the PRBS stimulus as
Joseph, Jy-Haw Yu, Motohiro, Kiyosawa, Nobuyuki, Nemoto, Keiko, Momose, Hiroshi, Mori, Manabu, Mochizuki   +5 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

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

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

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