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Titolo:
CROSSED POLARIZING FILTERS TO MEASURE RELATIVE AFFERENT PUPILLARY DEFECTS - REPRODUCIBILITY, CORRELATION WITH NEUTRAL DENSITY FILTERS AND USE IN CENTRAL RETINAL VEIN OCCLUSION
Autore:
RAMSAY A; WILLIAMSON TH; PARKS S; KEATING D;
Indirizzi:
TENNENT INST OPHTHALMOL,CHURCH ST GLASGOW G11 6NT LANARK SCOTLAND
Titolo Testata:
Eye
, volume: 9, anno: 1995,
parte:, 5
pagine: 624 - 628
SICI:
0950-222X(1995)9:<624:CPFTMR>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRORETINOGRAPHY; RUBEOSIS;
Keywords:
CENTRAL RETINAL VEIN; POLARIZING FILTER; PUPILLARY LIGHT REFLEX; RETINAL VEIN OCCLUSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
A. Ramsay et al., "CROSSED POLARIZING FILTERS TO MEASURE RELATIVE AFFERENT PUPILLARY DEFECTS - REPRODUCIBILITY, CORRELATION WITH NEUTRAL DENSITY FILTERS AND USE IN CENTRAL RETINAL VEIN OCCLUSION", Eye, 9, 1995, pp. 624-628

Abstract

Measurement of a relative afferent pupillary defect (RAPD) can be carried out by attentuation of light received by the normal eye during the swinging flashlight test. Such measurements may be useful in the management of central retinal vein occlusion (CRVO). In this study a method employing cross polarised filters (CPFs) was tested for reproducibility, In addition the pattern of attenuation of light was compared with that by neutral density filters (NDFs). Finally, the method was usedto investigate 74 patients with CRVO. The method was reproducible (8.7% variation) and showed exponential attenuation of light (in contrastto linear attenuation by the NDFs), In unilateral CRVO a sensitivity of 71% and specificity of 69% for the risk of iris neovascularisation was determined by the presence of RAPD requiring 20 degrees of rotation of the CPFs. It is concluded that CPFs provide a useful alternative to NDFs for the measurement of RAPD and have some advantages. They canbe employed in the clinical management of patients with CRVO.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 07:33:33