One day postoperatively , the mean flare value was statistically significantly lower in the HSM IOL group ( 14.92 photons per millisecond [ ph/ms ] 7.47 [ SD ] ) than in the uncoated IOL group ( mean 16.73 7.81 ph/ms ) ( P = .04 ) ; there was no statistically significant difference between groups 1 and 3 months postoperatively ( both P > .58 ) .