Refractive error after combined phaco-vitrectomy: A multicentric study. Issue 2 (March 2023)

• Record Type: Journal Article
• Authors: Kilian, Raphael; Crincoli, Emanuele; Rizzo, Clara; Ripa, Matteo; Faraldi, Francesco; Lavia, Carlo; Tartaro, Ruggero; Ceruti, Piero; Casini, Giamberto; Rizzo, Stanislao; Savastano, Alfonso
• Is Part Of: European journal of ophthalmology. Volume 33:Issue 2(2023)
• Page Start: 1175
• Page End: 1180
• Publication Date: 2023-03
• Subjects: Combined phaco-vitrectomy -- IOL-power formula -- postoperative refractive error -- SRK-T -- Holladay 2 -- Olsen; Ophthalmology -- Periodicals; Eye -- Diseases -- Periodicals; 617.7005
• DOI: 10.1177/11206721221143165
• Languages: English
• ISSNs: 1120-6721

Abstract

Purpose: To study the post-operative refractive error (RE) of patients undergoing combined phaco-vitrectomy and to find out which intraocular lens (IOL)-power formula had the best refractive outcomes. Methods: In this retrospective multicentric study we compared the preoperative expected target with the postoperative RE of patients undergoing combined phaco-vitrectomy due to vitreomacular traction, macular pucker, full thickness macular hole or lamellar macular hole. A multinomial logistic regression was performed to compare the postoperative REs and the differences between expected and postoperative REs among the SRK-T, Olsen's and Holladay-2 formulas. The correlation between the difference in REs and IOL-power was also studied. Results: Sixty-seven eyes with a mean axial length of 23.73 ± 1.21 mm were included. Forty-two (63%), 14 (21%) and 11 (16%) eyes were implanted with an IOL that was calculated respectively with SRK-T, Olsen's and the Holladay-2 formula. The mean preoperative expected- and post-operative REs were −0.16 ± 0.12D and −0.48 ± 0.17, respectively ( p = 0.045). SRK-T and Holladay-2 formulas led to a significant myopic shift whereas Olsen's caused a significant hyperopic error, independently from the IOL power. Conclusion: Independently from the IOL power, none of the analyzed formulas is precise at calculating the post-operative RE.