Purpose: To compare the changes of postoperative refractive error according to filling agents after vitrectomy combined with cataract surgery
Materials and methods: A retrospective review of the medical records of 112 patients who underwent vitrectomy combined with cataract surgery from January 2016 to June 2019 at Konyang University Hospital. Patients who filled by balanced salt solution(BSS PLUS® Alcon, FortWorth, TX, USA)were allocated to BSS group and filled by air or 20% SF6 gas were allocated to GAS group. The preoperative target IOL and refractive error was calculated by IOL Master® (Carl Zeiss, Jena, Germany) and then compared with the postoperative refractive error at 3 months after surgery.
Results: There were no significant differences in age, sex, axial length, and keratometry between the two groups. Three months after surgery, the best corrected visual acuity improved significantly in both groups. The preoperative target refractive error of the BSS group was -0.37 ± 0.27D, and -0.20 ± 0.65D at 3 months after surgery, which shifted toward hyperopia by 0.17 ± 0.38D. This was significantly different(p<0.05). The preoperative target refractive error of the GAS group was -0.40 ± 0.26D and -0.39 ± 0.57D at 3 months after surgery, which showed hyperopic change of 0.01 ± 0.31D, but this was not significantly different from preoperative target refractive error. The GAS group tended to be more myopic than the BSS group, but it was not statistically significant.
Conclusions: There was no significant difference in postoperative refractive error according to filling agent during vitrectomy combined with cataract surgery.