AIM: To explore the postoperative refractive error and influence factors using the Optical Biometry(IOL Master)in patients with silicone oil filled eye complicated cataract after silicone oil removal combined with cataract surgery.

METHODS: From August 2020 to November 2020 in the Affiliated Eye Hospital of Nanchang University, 41 patients with silicone oil removal combined with cataract surgery were divided into 2 groups: 18 patients(18 eyes)in high myopia group and 23 patients(23 eyes)in non-high myopia group. Collected and recorded the patients' IOL Master measurement data. Statistical analysis was performed in SPSS20.0.

RESULTS: The mean spherical degree or astigmatism of the IOL Master measurement and refraction in high myopia and non-high myopia group performed by paired t-test(P>0.05). The mean axial difference ΔAL were -0.28±0.29 and 0.05±0.31mm between the two groups has no difference(P<0.05), while ΔK, mean absolute refractive error(MARE)and Δastigmatism(P>0.05). The preoperative and postoperative axial length(AL)in high myopia groups were 28.37±1.73 and 28.10±1.55mm(t=3.994, P<0.05), yet the non-high myopia group(P>0.05). Bivariate linear correlation analysis: in the high myopia group, there was a moderate positive correlation between preoperative AL and MARE(r=0.742, P<0.05), and a moderate negative correlation between ΔAL and MARE(r=-0.646, P<0.05), but in non-high myopia group, preoperative AL, ΔAL, preoperative K, ΔK had no correlation(P>0.05).

CONCLUSION: IOL Master performed the small biostatistical error and high measurement accuracy of the intraocular lens in patients with silicone oil filled eye complicated cataract. The longer preoperative AL, the more changes in the axial length after silicone oil removal, and the greater the refractive error of patients with high myopia silicone oil filled eye complicated cataract.