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Titolo:
EFFECT OF UNCORRECTED REFRACTIVE ERRORS UPON CENTRAL VISUAL-FIELD TESTING
Autore:
HENSON DB; MORRIS EJ;
Indirizzi:
UNIV WALES COLL CARDIFF,COLL CARDIFF,DEPT OPTOMETRY & VIS SCI,POB 905CARDIFF CF1 3XF WALES
Titolo Testata:
Ophthalmic & physiological optics
fascicolo: 4, volume: 13, anno: 1993,
pagine: 339 - 343
SICI:
0275-5408(1993)13:4<339:EOUREU>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
D.B. Henson e E.J. Morris, "EFFECT OF UNCORRECTED REFRACTIVE ERRORS UPON CENTRAL VISUAL-FIELD TESTING", Ophthalmic & physiological optics, 13(4), 1993, pp. 339-343

Abstract

An investigation of the effects of uncorrected refractive errors upona central visual field examination has been made with a view to establishing what the likely effects would be of omitting a refractive correction when screening the visual field with a threshold related, supra-threshold strategy on the Henson CFA3000. The results indicate that, while a linear relationship exists between the extent of threshold elevation and the product of residual refractive error and pupil size, the scatter in the results means that accurate predictions cannot be made in individual cases. The threshold elevation was found to be independent of eccentricity (within the central 21-degrees from fixation) anddid not increase the variability of results. These last two findings indicate that uncorrected refractive errors are unlikely to affect thesensitivity of the threshold related, supra-threshold strategy to localized visual field defects.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 05:29:05