The Application of Sclera Fixing Surgery in Suture Less Posterior Chamber Intraocular Lens / 昆明医科大学学报

Objective To evaluate the clinical efficacy of sclera fixing surgery in suture less posterior chamber intraocular lens (IOL). Method From March 2016 to February 2018, 60 patients undergoing IOL implantation in the Yuxi People's Hospital were selected as the study objects. They were randomly divided into thd study group (n=30) and the control group (n=30).The control group was given suture and fixation of ciliary sulcus in intraocular lens. The study group was treated with sclero fixing surgery in suture less posterior chamber intraocular lens, and we analyzed the visual acuity, intraocular lens stability, and occurrence of adverse reactions in both groups.Result The visual acuity of the study group was significantly better than that of the control group (P＜0.05). The stability of the intraocular lens was better in the study group than in the control group (P＜0.05). The incidence of adverse reactions in the study group was significantly higher than that of the control group (6.67％) (P＜0.05). Conclusions The sclera fixation surgery in suture less posterior chamber intraocular lens is a safe and effective treatment method for posterior chamber IOL without lens implantation with full capsular support, which has less trauma and fewer complications than sclera suture fixation of posterior chamber intraocular lens.It can effectively improve the vision of patients, significantly reduce the incidence of adverse reactions, and is beneficial to to patient's prevention, and it is worth for promoting.

Unilateral Scleral Fixation of Posterior Chamber Intraocular Lenses in Pediatric Complicated Traumatic Cataracts

PURPOSE: The purpose of this study was to evaluate the visual outcomes and complications of unilateral scleral fixation of posterior chamber intraocular lenses (SF-PCIOLs) in pediatric complicated traumatic cataracts without capsular support. METHODS: This study involved five eyes of five children who underwent unilateral SF-PCIOL. All patients had a unilateral complicated traumatic cataract associated with anterior or posterior segment injury. Visual acuity (VA), IOL position, and postoperative complications were assessed during follow-up. RESULTS: The mean age of patients at the time of SF-PCIOL was 90 months (range, 66-115). The mean duration of follow-up time after surgery was 22 months (range, 5-55). In all patients, the best-corrected VA was either improved or was stable at last follow-up following SF-PCIOL implantation. There were no serious complications. CONCLUSIONS: Unilateral scleral fixation of PCIOL can be a safe and effective procedure for pediatric, unilateral, complicated traumatic cataracts without capsular support in selected cases.

Three Cases of Congenital Aniridia in One Family

Aniridia is a relatively rare congenital anomaly and its incidence is about 1:100, 000.Main features of aniridia include congenitally partial or nearly complete absence of the iris and hypoplasia of optic disc and fovea. It is almost bilateral and occurred as an autosomal dominant trait.However, some patients develop both sporadic nonfamilial aniridia and Wilms 'tumor, and another group of patients is transmitted as an autosomal recessive trait. We observed aniridia in two generations, as mother and two daughters. They had cataract, nystagmus, neovascularization of corneal margin and pannus formation, as well as aniridia.We also found hypoplasia of optic disc and fovea in mother. We have operated on mother with phacoemulsified lens aspiration and posterior chamber IOL implantation in both eyes consecutively.The postoperative visual acuity following lens extraction improved, but was not corrected. In addition, intraocular pressure decreased.

Astigmatism in Extracapsular Cataract Extraction with Posterior Chamber IOL Implantation

This investigation was undertaken to evaluate the natural and modified course of postoperative astigmatism, and to determine the stabilization time of refraction following extracapsular cataract extraction with posterior chamber IOL implantation. Among the patients who underwent extracapsular cataract extraction with posterior chamber IOL implantation performed by one surgeon(Kim) between April 1987 and August 1987, 46 patients who could be followed up over 6 months were included. The corneoscleral incision was closed with 7 to 8 interrupted 10/0 nylon monofilament sutures. In 10 eyes of 46 eyes the sutures were cut with a precut razor fragment under the operating microscope partially 6 weeks after operation or totally cut 2 months after operation. Our analysis demonstrated the following: A. Cases in which the sutures were not cut(36 eyes). 1. The mean initial corneal astigmatism after operation was 6.931 +/- 1.445 diopters. 2. The mean final cylinder after operation was 1.43 +/- 0.458 diopters. 3. There was no significant relationship between the initial corneal astigmatism and the amount of final cylinder after operation(correlation coefficient=0.0466). 4. The mean of stabilization time of refraction after operation was 3.083 +/- 1.052 months. 5. The relationship between the initial corneal astigmatism and the time of stabilization of refraction after operation was significant(correlation coefficient=0.3466). B. Cases in which the sutures were cut(10 eyes). 1. In 40% of eyes the pre-and postoperative corneal astigmatism were the same, and in 80% of eyes the change was equal to or less than 0.75 diopters.