Comparison of Biometry and Intraocular Lens Power Between Two Different Optical Biometers

Özet

Objective: To compare refractive results after cataract surgery using AL-Scan and IOL-Master500 optical biometers for intraocular lens power calculation. Methods: 78 eyes of 78 consecutive patients undergoing cataract surgery and implanted with the same intraocular lens (Eyecryl Plus HSAS600) were included in the study. In Group 1, preoperative biometry was performed with AL-Scan, and in Group 2, with IOL Master 500. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and mean absolute refractive error (MARE) at preoperative and 6-month follow-up visits were recorded. Results: The postoperative mean MARE was -0.28±0.30 Diopter (D) and –0.32±1.13 D in Groups 1 and 2, respectively (p=0.38). At the 6th month visit, 92% of eyes in Group 1 were within 0.50 D of target refraction in Group 1 and, 93% of eyes in Group 2 were within 0.50 D (p=0.99). Uncorrected and corrected distance visual acuity improved significantly in both groups (p<0.001). The mean postoperative UDVA were 0.72±0.12 and 0.66±0.16 in Groups 1 and 2, respectively (p=0.20). No sight-threatening complication occurred during or after the operation in either group. Conclusion: These findings show the AL – Scan provides comparable postoperative results with the IOL Master after implantation of the same intraocular lenses.