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Better refractive outcomes achieved with three-piece IOLs
Three-piece IOLs may produce better refractive outcomes than one-piece IOLs, according to researchers.
In a retrospective study, researchers evaluated 110 eyes implanted with a three-piece IOL and 84 eyes implanted with a one-piece IOL. Corneal power and length were measured using the same devices in both groups, and median absolute error and mean absolute error in refraction prediction were assessed 1 month after surgery.
Patients who had received a three-piece IOL had lower median absolute error for all formulas used, ranging from 0.15 D to 0.19 D, compared with 0.23 D to 0.30 D in patients who had received one-piece IOLs.
Additionally, all formulas showed a higher percentage of eyes implanted with the three-piece IOL were within ±0.25 D and ±0.50 D of the target refraction, according to the researchers.
No major differences in mean age, preoperative simulated K value, axial length, implanted IOL power or preoperative target refraction between three-piece IOL and one-piece IOL patients were reported.
Disclosure: Hoffer receives royalties for his book, IOL Power, from Slack, Incorporated, and formula royalties from all manufacturers using the Hoffer Q formula.