Comparación del rango de medida de defectos entre la perimetría estándar blanco/blanco y la perimetría Pulsar

  1. M. González de la Rosa
  2. M. González-Hernández
  3. J. García-Feijoo
  4. M. Sánchez Méndez
  5. J. García-Sánchez
Revista:
Archivos de la Sociedad Española de Oftalmologia

ISSN: 0365-6691

Año de publicación: 2011

Volumen: 86

Número: 4

Páginas: 113-117

Tipo: Artículo

DOI: 10.1016/J.OFTAL.2010.11.020 DIALNET GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Archivos de la Sociedad Española de Oftalmologia

Resumen

Objectives: Normal thresholds on Pulsar perimetry fall faster than those of standard perimetry in the peripheral visual field. Two related studies were performed. Firstly, the frequency distributions of glaucoma defects on standard automated perimetry (SAP) and the relationship of the centre and periphery (Study A) were studied first, followed by an attempt to establish the limits of pulsar perimetry (Study B). Material and method: A: frequency of defects was calculated in 78.663 SAP perimetries (G1-TOP, Octopus 1-2-3, Haag-Streit). Study B: 204 eyes with mean defect (MD-SAP) lower than 9dB were examined 8.92±4.19 times with SAP (TOP-32, Octopus 311) and temporal modulation perimetry (T30W, Pulsar Perimeter, Haag-Streit). Results: Study A: 50.7% of the SAP examinations showed MD values lower than 9dB and 32.7% bellow 6dB. The MD correlation of the central 20º with the MD of the most peripheral points was r=0.933. Study B: in cases with MD-TOP-32 lower than 6dB, SAP had the maximum possibility of detecting defect in 0.02% of points and Pulsar in 0.29%. In subjects with MD-TOP-32 between 6 and 9dB frequencies were 0.38% in SAP and 3.5% in Pulsar (5.1% for eccentricities higher than 20º). Conclusions: Pulsar allows detecting defects, without range limitations, in the initial half of SAP frequencies expected on glaucoma patients. In order to study the progression of deeper defects the examination should focus on the central points, where the dynamic range of both systems is more equivalent.

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Fuente de los datos: Dialnet