The Effect Of Pupil Size On The Overall And Peripheral Sensitivity Of The Humphries Visual Field.

Ten optometry students performed a custom designed Humphries Visual Field in an attempt to measure overall sensitivity and peripheral sensitivity of field under three different pupil
conditions: normal, mydriatic, and miotic. The results of the fields showed that a miotic pupil decreased the overall sensitivity by an average of 0.82 decibels (SD ±1.05), and a mydriatic pupil increased overall sensitivity by an average of 0.15 decibels (SD ±2.25). The peripheral sensitivity of the visual field was decreased by an average of 0.71 decibels (SD ±1.22) with a miotic pupil and increased by 0.84 decibels (SD ±2.73) with a mydriatic pupil.