Power of Bausch and Lomb Soflens™ Contact Lenses

The powers of Bausch and Lomb Soflenses were measured in air using a technique that proved to be highly reliable. The results were compared with the powers printed on the lens vials. The lenses measured from zero to −1.50 diopters greater than the powers marked on the lens vials. The mean difference was −0.83 D ± 0.32 D. Lenses of lower minus powers differed more from the lens vial values than lenses of higher minus values. The power effect of Bausch and Lomb Soflens TM contact lenses was measured by refraction. Power effect was also significantly greater in minus value than the powers printed on the lens vials.