ABSTRACT
AIM: To observe the efficacy and safety of modified four-point fixed intraocular lens suspension implantation in aphakic eyes.METHODS:A prospective study. A total of 32 aphakic patients(32 eyes)with an average age of(44.56±8.48)years who underwent modified four-point fixed intraocular lens suspension implantation in our hospital from October 2020 to May 2021 were selected. Uncorrected visual acuity(UCVA), best corrected visual acuity(BCVA), corneal astigmatism, intraoperative and postoperative complications were observed before and after operation.RESULTS:The mean follow-up of all patients was(4.84±0.64)mo. The preoperative UCVA(LogMAR)was 1.25±0.42 and the last follow-up was 0.5±0.25(P<0.001). The preoperative BCVA(LogMAR)was 0.41±0.19 and the last follow-up was 0.42±0.19,(P >0.05). The preoperative corneal astigmatism was(1.17±0.64)D and the last follow-up was(1.20±0.59)D(P>0.05). There were no intraoperative complications, but 2 eyes had low intraocular pressure, 1 eye had high intraocular pressure and 2 eyes had corneal edema occurred after operation. There were no complications of hyphema, vitreous hemorrhage, macular cystoid edema, corneal endothelial decompensation, inclination or eccentricity of intraocular lens and exposure of suture.CONCLUSION:The modified four-point fixed intraocular lens suspension implantation can significantly improve the postoperative visual acuity of aphakic patients without additional corneal astigmatism,and with fewer complications.
ABSTRACT
PURPOSE: To compare the efficacy and complications of scleral fixation of posterior chamber intraocular lens (IOL) and retropupillary fixation of iris claw IOL for dislocated IOL or aphakia without sufficient capsular support. METHODS: This retrospective study was comprised of 17 eyes of 16 patients undergoing scleral fixation and 14 eyes of 13 patients undergoing retropupillary fixation from August 2013 to June 2018. Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), intraocular pressure (IOP), slit lamp examination, corneal topography, refractive indices, corneal curvatures, corneal endothelial cell density, and complications of both groups were examined preoperatively and 1 day, 1 week, 1 month, 2 months, and 6 months postoperatively. RESULTS: Six months after the operation, UCVA and BCVA improved in both groups; however, there were no significant differences between the two groups (UCVA, p = 0.162; BCVA, p = 0.418). IOP was temporarily higher in the scleral fixation group at one day postoperatively (p = 0.023). The mean absolute prediction error was smaller in the retropupillary iris fixation group at 6 months postoperatively (p = 0.034). Postoperative total astigmatism, corneal astigmatism, and corneal endothelial cell density were not significantly different between the two groups. CONCLUSIONS: The retropupillary iris fixation group did not show significant improvement in visual acuity compared with the scleral fixation group. However, the retropupillary iris fixation group provided better mean absolute prediction error and a low risk of postoperative increase in IOP compared with the scleral fixation group. Retropupillary fixation of iris claw IOL is a promising option for scleral fixation of posterior chamber IOL for dislocated IOL or aphakia without sufficient capsular support.