Static fundus perimetry in normals. Microperimeter 1 versus SLO [Statische fundusperimetrie bei probanden: Microperimeter 1 versus SLO]

Background. The Microperimeter 1 (MP-1) allows for fundus-controlled static perimetry of the central visual field. The purpose of this study was to compare MP-1 fundus perimetry with the already established scanning laser ophthalmoscope (SLO) fundus perimetry concerning detected threshold values of light increment sensitivity in normals. Method. In 31 eyes of 31 healthy volunteers a fundus controlled static threshold perimetry was carried out each with the MP-1 (Nidek Technologies) and the SLO (Rodenstock). In the central 21°x12° visual field light increment sensitivity threshold values for 40 corresponding stimulus locations were compared in a restangular 3°-grid. Results. The average light increment sensitivity was 19.1±0.5 dB with the MP-1 and 17.2±0.9 dB with the SLO. On average the threshold values of the 40 corresponding test locations were 1.9±1.3 dB higher with the MP-1 than with the SLO. Conclusion. Both the MP-1 and SLO offer the possibility of a reproducible functional analysis of the central retina under simultaneous fundus control. For comparison of results of the MP-1 and SLO fundus perimetry, a correction factor of approximately 2 dB should be used. © Springer Medizin Verlag 2005.