Hohe Refraktionsfehler beeinflussen bei der kinetischen Perimetrie die Isopterenlage auch außerhalb der zentralen 30

Background: In kinetic perimetry, refractive errors are usually only corrected within the central 30° of the visual field. In this study, we determined whether refractive errors have an influence on the peripheral visual field. Patients and methods: The peripheral visual field was determined with and without contact lens correction always by the same examiner in 58 myopic in 30 hyperopic eyes (range of refractive errors - 25 D to + 17.25 D). If the average of an isopter position determined without contact lens was outside its 95% confidence interval, a significant influence of the corresponding refractive error was postulated. Studydesign: Experimental, clinical study. Results: In uncorrected myopias > 11 D and uncorrected hyperopias > 9 D, we observed a significant inward displacement of the I4e isopter. In uncorrected myopias > 18 D and uncorrected hyperopias > 13 D, we observed a significant inwards displacement of the 13e isopter. No influence of refractive errors could be found on the V4e isopter. Conclusions: In myopias > 11 D and hyperopias > 9 D kinetic perimetry of the peripheral visual field should be performed only after correcting the refractive error with a contact lens. No refractive correction is needed if only the boundaries are determined.