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Clinical alternative for reducing the time needed to perform automated threshold perimetry


, : Clinical alternative for reducing the time needed to perform automated threshold perimetry. Journal of the American Optometric Association 66(11): 699-705

Automated threshold perimetry is an important test used to diagnose and monitor open angle glaucoma. Unfortunately, the test can be tedious and demands that a patient concentrate for up to fifteen minutes or more per eye to achieve useful results. Many individuals are not capable of fixating for extended periods, and the reliability of the automated threshold test consequently suffers. This paper explores alternative methods to perform automated threshold perimetry so that the time required for testing is reduced while the clinical impact of performing abbreviated tests is minimized. Several different versions of a central automated threshold perimetry test were run on a cooperative, normal individual utilizing a Humphrey Field Analyzer. One field was run on consecutive days in one eye only. The 24-2 and 30-2 test patterns were performed using the standard threshold format, FastPac, and certain modifications (involving the short-term fluctuation monitor and the fixation monitor) to measure the time required for the test to be performed and monitor any changes in the global indices as measured by the tests. The 30-2 automated threshold test requires about 13 minutes to perform while a similar central threshold test, the 24-2 test, run in a modified format (without the short-term fluctuation monitor and/or the fixation monitor) was performed in about five minutes. There are several methods that may be used to reduce perimetric testing time without compromising significantly the reliability of the diagnostic information. Reduced testing time may enable the clinician to obtain reliable fields in certain patients whose data are deemed unreliable when performing lengthier tests. The clinician must decide which data may be lost when testing time is reduced since clinical decision-making is inevitably affected whenever clinical data is not gathered.

US$29.90

PMID: 8576535


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Calil, C.; Liberato, F.L.; Pereira, A.C.; de Castro Meneghim, M.; Goodson, J.M.; Groppo, F.C., 2010: The relationship between volatile sulphur compounds, tongue coating and periodontal disease. The purpose of the present study was to observe the casual levels of volatile sulphur compounds (VSC) in volunteers with different clinical scores of tongue coating, periodontal pockets depth and Gingival Bleeding Index. Seventy-two subjects who a...

Andra, A., 1965: Evaluation Of Lateral Tele-Roentgenographic Pictures In The Diagnosis Of Morphological Conditions Of The Median Facial Region Of The Upper Jaw In Cleft Jaw And Palate. Deutsche Zahnarztliche Zeitschrift 20: 196-202

Sultana, P.; Takami, A.; Matsumoto, T.; Tomita, M., 2010: Delayed optical images through coupled-resonator-induced transparency. We propagated transverse two-dimensional images encoded on optical pulses through a frequency window of a coupled-image-resonator-induced transparency. The optical images are stored and delayed by 10.6ns, reflecting the tunable dispersion of the c...

Kun, E.; Dechary, J.M.; Pitot, H.C., 1954: The oxidation of glycolic acid by a liver enzyme. Journal of Biological Chemistry 210(1): 269-280

Spinelli, S.; Chiodi, S.; Bacigalupo, A.; Brasca, A.; Menada, M.V.; Petti, A.R.; Ravera, G.; Gualandi, F.; VanLint, M.T.; Sessarego, M., 1994: Ovarian recovery after total body irradiation and allogeneic bone marrow transplantation: long-term follow up of 79 females. Seventy-nine females undergoing allogeneic BMT following conditioning with total body irradiation (TBI), were prospectively followed between March 1983 and March 1992 with regular gynaecological examinations, including plasma levels of luteinising...

Bullivant, M.; Pattenden, G., 1971: Photochemical decomposition of chrysanthemic acid and its alkyl esters. Pyrethrum post: 11 (2) 72-76

Singh, R.R.j; Ebling, F.M.; Kumar, V.; Hahn, B.H., 1995: Abnormality in T cell help is a primary determinant of autoimmune vs normal phenotypes Relevance to pathogenesis of SLE. Arthritis & Rheumatism 38(9 SUPPL ): S226

Oliver, T.H.; Mashanova, A.; Leather, S.R.; Cook, J.M.; Jansen, V.A.A., 2007: Ant semiochemicals limit apterous aphid dispersal. Some organisms can manipulate the nervous systems of others or alter their physiology in order to obtain benefit. Ants are known to limit alate aphid dispersal by physically removing wings and also through chemical manipulation of the alate develo...

Dingfelder, W.M., 1984: Your financial report: fact and fiction. Journal ): 76-77

Castiglioni, E.; Soriani, N.; Girelli, D.; Camaschella, C.; Spiga, I.; Della Porta, M.G.; Ferrari, M.; Cremonesi, L., 2011: High resolution melting for the identification of mutations in the iron responsive element of the ferritin light chain gene. Among the causes of hyperferritinemia, hereditary hyperferritinemia cataract syndrome (HHCS) is an autosomal dominant disease characterized by distinctive cataracts and high serum ferritin. It is caused by mutations in the iron responsive element...