Normal values and repeatibility of bivariate contour ellipse area (BCEA) with Microperimeter Mp-1

Autori: Rigoni E, Carnevale C, Gerace E, Cacciotti V, Trabucco P

Objective/Purpose: To evaluate age-stratified normal bivariate contour ellipse area (BCEA) and repeatability using MP-1 microperimetry.

Materials/Patients: 100 eyes of 100 healthy volunteers (age range: 20-80 years). All patients underwent a fixation test by MP-1 microperimeter (Nidek Technologies).

Methods: All subjects had a logMAR acuity ≤ 0.0 without ocular pathologies on a complete ophthalmological examination. Fixation stability was quantified by calculating the BCEA obtained during a 30 second fixation test. A 2° red cross was used as fixation target. BCEA (deg2) was normalized by logarithmic transformation (Shapiro-Wilk test, p<0.05). Statistical analysis was performed using linear regression analysis and Pearson’s correlation for comparisons. All patients were then stratified by decade of life and unpaired t-test was performed between the groups. Statistical significance was set at P <0.05.


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