Evaluating the effects of trifocals and extended depth of focus intraocular lens implantation on stereopsis and contrast sensitivity in cataract patients.

PURPOSE: To compare the effects of trifocal and extended depth of focus (EDOF) intraocular lenses (IOLs) on stereopsis and contrast sensitivity following cataract surgery.

METHOD: This randomized, prospective, comparative study was conducted at the cataract department of a tertiary eye hospital. A total of 70 patients scheduled for cataract extraction were randomly assigned to two groups. Group 1 received AcrySof IQ PanOptix trifocal IOLs, while Group 2 received AcrySof IQ Vivity EDOF IOLs. Comprehensive evaluations were performed preoperatively and postoperatively at 1 week and 1 month.

RESULTS

At 1 week postoperatively, both trifocal IOLs and EDOF IOLs demonstrated comparable outcomes in contrast sensitivity and stereopsis. At 1 month, stereopsis was significantly better in the EDOF group (89.14 ± 46.86 arc sec) than in the trifocal group (118.28 ± 44.81 arc sec; P = 0.017). Contrast sensitivity improved significantly in the EDOF group ( P = 0.023) but remained stable in the trifocal group. Intergroup contrast sensitivity differences were not statistically significant.

CONCLUSION

Both IOLs provided good stereopsis and contrast sensitivity in the early postoperative period. However, by 1 month, EDOF IOLs demonstrated significantly better stereopsis and improved contrast sensitivity.