Purpose: To evaluate the refractive power and changes in the depth of the anterior chamber after cataract surgery with or without simultaneous vitreous surgery.
Methods: 28 eyes of 22 cases who received cataract surgery (PEA group) and 30 eyes of 30 cases who received cataract surgery simultaneously with vitreous surgery (Vit group) were enrolled prospectively. A vitrectomy was performed for a macular hole or epiretinal membrane. Refractive outcomes, axial length, and the anterior chamber depth were measured before, immediately after, as well as 1, 3, 6, and 12 months after the surgery using an Auto Ref/keratometer, the ultrasound biometry, the Pentacam, and IOL Master.
Results: The mean postoperative difference in refractive power immediately after surgery was -0.01±0.66 D and -0.19±0.62 D in the PEA and Vit groups, respectively. Postoperatively, the Vit group showed a significant increase in myopia compared to the PEA group in ultrasound results at all time points (p <0.05), whereas no difference was observed between the groups in IOL Master. For both measures, the postoperative refractive error in the Vit group was more myopic than predicted. Furthermore, there was a significant increase in anterior chamber depth in both groups after surgery, as observed with Pentacam and IOL Master (p <0.0001).
Conclusions: A significant myopic shift occurred in the Vit group compared to the PEA group after surgery, as indicated by the ultrasound results. Both groups showed a significant increase in anterior chamber depth after surgery in both measurements.
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