Soft contact lens fit remains consistent across spherical powers within ±2.00 D
Soft contact lens fitting characteristics do not significantly differ when spherical power is changed by up to ±2.00 diopters, according to a study. In this randomized, cross-over, open-label study, 30 participants received either spherical Exact-Rx (current prescription) or Test lenses (±2.00DS to Exact-Rx; avoiding sign reversal) or toric Exact-Rx/Test lenses according to their refractive needs.... ...