Study On The Relationship Between Persistent Subretinal Fluid And Visual Acuity After Scleral Buckling Surgery For Retinal Detachment

Objective:To study the incidence,duration,related factors,and visual acuity of persistent subretinal fluid after scleral buckling surgery for retinal detachmentMethods:In this study,forty-four patients with primary rhegmatogenous retinal detachment,44 eyes,underwent successful scleral buckling to reattach the retina.A comprehensive ophthalmic examination,including best-corrected visual acuity,slit-lamp biomicroscopy,intraocular pressure measurement by non-contact tonometry,and optical coherence tomography,was conducted preoperatively and during follow-up at 1,2,3,6,and 12 months postoperatively.The correlation between postoperative parameters and SRF were also observed.Results:The study conducted a study on a total of 44 patients(23 males（52.3%）and 21 females（47.7%）,with a mean age of 36 years.There were 15 cases of high myopia（34.1%）and29 cases of non high myopia（65.9%）.Preoperative retinal detachment involved macula in 33 patients（75%）and no macula in 11 patients（25%）.Among the 44 patients,28（63.6%）could observe subretinal effusion at 2 weeks after operation.At 1,2,3,6 and12 months after operation,Oct scanning showed that 25（56.8%）,22（50%）,13（29.5%）,10（22.7%）and 5（11.4%）patients still had SRF,and their mean absorption time was4.8 ± 4.1.The mean age was lower in the SRF group than in the no SRF group（28.9 ±12.4 vs 47.7 ± 12.2,p = 0.001）,and the incidence of SRF was higher in patients with macular involvement without macular involvement（85.71% vs 56.25%,p = 0.03）.Among the 28 patients in the SRF group,the mean visual acuity at 1 month postoperatively was lower than that at 12 months postoperatively（0.77 ± 28 vs 0.45 ±28,p = 0.002）.In 33 patients with macular involvement,there was a significant difference in visual acuity between the non-absorbed group without effusion and the non-absorbed group at 1 month after surgery,and there was a significant difference in visual acuity between the 3-month group（complete absorption of effusion within 3months）and the non-absorbed group.However,there was no significant difference in visual acuity among the groups at 12 months after surgery.Conclusion:Patients at a younger age and with macular involvement from preoperative retinal detachment were more likely to have PSF.Moreover,PST may affect the visual recovery of patients in a short time after surgery while no significant effect on the final level of BCVA was observed.