ABSTRACT
@#AIM: To explore the postoperative axial length(AL)and corneal curvature(K)shift in high myopia silicone oil patients complicated cataract after silicone oil removal combined with cataract surgery as well as the relationship.<p>METHODS: From August 2020 to November 2020 in the Affiliated Eye Hospital of Nanchang University, 45 patients(48 eyes)with silicone oil eye complicated cataract were divided into 2 groups: 20 eyes of 20 patients(refraction ≥-6.00D and AL ≥26mm)in high myopia group and 28 eyes of 25 patients(refraction < -6.00D or AL <26mm)in non-high myopia group. Record the general information and IOL-Master measurement data AL and K, statistical analysis was performed. <p>RESULTS: There was no difference in preoperative and postoperative K value of two groups(all <i>P</i>>0.05). The AL of the patients in the high myopia group was 28.35±1.68mm after silicone oil removal combined with cataract surgery, which was shorter than 28.08±1.53mm before the operation(<i>P</i><0.001), yet not statistically significant in non-high myopia group(<i>P</i>>0.05). The median ΔAL of patients in the high myopia group was \〖-0.28(-0.44, -0.08)\〗 compared with the non-high myopia group \〖-0.06(-0.20, 0.15)\〗, which was statistically different(<i>P</i><0.05), but no significant difference in both ΔK(<i>P</i>>0.05). There was no correlation between |ΔAL| and |ΔK|, or and preoperative K values(<i>P</i>>0.05)in two groups. Preoperative AL was moderately positive correlated with |ΔAL| in the high myopia group(<i>r</i>=0.702, <i>P</i>=0.01), but not in the non-high myopia group(<i>P</i>>0.05).<p>CONCLUSION: There was no significant shift in K value of high myopia group with silicone oil eye complicated cataract after the silicone oil removal combined with cataract surgery. The longer preoperative AL in high myopia group, the more likely become shorter after surgery, meanwhile the longer AL, the greater AL shift.
ABSTRACT
Background Vitretomy and lenstomy with silicone oil tamponade is an effective method for complicated vitreous retinopathy.The severe anisometropia after silicone retention is usually treated by two-point transscleral suture fixation for posterior chamber intraocular lens(IOL)implantation.In order to reduce the number and difficulty and complication of the operation,the surgical method should be improved.Objective The goal of this study was to observe the resuh of silicone oil removal combined with four-point trans-scleral suture fixation of posterior chamber IOL after vitrectomy.Methods A retrospective case-observational study design was adopted.Twenty eyes with silicone oil tamponade from 20 patients without lens and posterior capsule after vitrectomy were included in this study.Silicone oil removal with four-point trans-scleral suture fixation of posterior chamber IOL was performed.The anterior ocular inflammatory response,intraocular pressure,uncorrected and corrected acuities before and after operation,corneal endothelial cell counting and postoperative complications were observed and analyzed.Written informed consent was obtained from all patients prior to the operation.Results All of the operative eyes in this study showed improvement of visual acuity after operation.Of the 20 eyes,a visual acuity of ≥0.8 was seen in 2 eyes,0.6-0.7 in 6 eyes,0.3-0.5 in 8 eyes and 0.05-0.2 in 4 eyes 3 months after the removal of silicone oil.The uncorrected acuity postoperation was significantly improved in comparison with preoperation(H=10.147,P＜0.01),but no significant difference was found in the corrected acuity between preoperation and postoperation(X =2.089,P＜ 0.01).The number of the corneal endothelial cells was(2064±329)cells/mm2 before operation,and that after operation was(1987±269)cells/mm2,showing an insignificant change between them(t =1.660,P ＞ 0.05).No abnormality of IOL position was found in all 20 operated eyes.There was not serious postoperative complication in all 20 patients.Conclusions The combination of silicon oil extraction with four-point transscleral suture fixation IOL is effective in eyes without posterior capsule or lens after vitrectomy.It can reduce the operation time and improve the postoperative acuity and the quality of life of patients.