有晶状体眼后房型人工晶状体植入术治疗高度近视术后UBM观察

目的 通过UBM在活体状态下观察有晶状体眼后房型人工晶状体(posterior chamber phakic intraocularlens,PCPIOL)植入术后PCPIOL与虹膜、睫状体和晶状体的位置的关系及变化.方法 取高度近视患者33只眼接受有晶状体眼后房型人工晶状体植入及术后检查,手术在表面麻醉下进行,作透明角膜隧道式切口,可植入式接触镜(implantablecontactlens,ICL)置于透明晶状体与虹膜之间,术中1点位作虹膜周切口.每只眼术前及术后进行全面的眼部检查,在术后1,3,6个月进行UBM检查观察ICL位置.结果 33只眼术前裸眼视力和最好矫正视力分别为0.04±0.06,0.5±0.3;术后分别提高为0.5±0.2,0.8±0.2,术后裸眼和矫正视力均明显好于术前视力(P＜0.05).术后第6个月前房深度为(2802±297)μm,ICL的拱度为329μm,小梁虹膜夹角29.2°.UBM显示所有ICL均与虹膜表面有摩擦,22只眼中两个襻在晶状体悬韧带上;7只眼中一只襻在悬韧带上;另一只襻在睫状突上;4只眼中两只襻在睫状突上.20只眼中PCPIOL的两个襻顶点放置在睫状沟位置;6只眼中PCPIOL发生了旋转.结论 有晶状体眼后房型人工晶状体植入术对高度近视的治疗是一种安全、有效地方法.寻找新的、准确的方法测量睫状沟水平直径对减少因为不合适的ICL长度造成的并发症具有重要意义.

Abstract：

Objective To observe the position of posterior chamber phakic intraocular lens and its relationship to the iris and the crystalline in vivo through UBM. Methods There were 33 eyes with high myopia who accepted surgery treatment All surgeries were performed using topical anesthesia and clear corneal incision. The posterior chamber phakic intraocular lens manufactured with STAAR collamer was implanted between transparent lens and iris. During the course of the surgery, iridectomy was done at one clock. Each eye was examined carefully before and after surgery. The position of ICL was observed at 1, 3 and 6 months. Result All eyes of preoperative uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA)were 0.04± 0.06, 0.5± 0.3 respectively and postoperative were 0.5± 0.2, 0.8± 0.2 respectively. At sixth month of postoperative the anterior chamber depth was 2802± 297 m and ICL central vault was 329 m. UBM verified the contact between ICL and iris. Both haptics were supported by zonula in 22 eyes; one haptic was supported by zonula and other haptic by ciliary body in 7 eyes; Both haptics were supported by ciliary body in 4eyes. The extreme tip of two haptic was at sulcus in 20 eyes. In 6 eyes, rotation of the lens was observed. Conelusions Thephakic IOLs are a safety and effective treatment for the correction of high myopia. It is important that looking for a new and accurate method to measure sulcus diameter in order to reduce complication resulted by inaccurate ICL vault.

Ultrasound biomicroscopy examination of posterior chamber phakic intraocular lens for high myopia

Objective To observe the position of posterior chamber phakic intraocular lens and its relationship to the iris and the crystalline in vivo through UBM. Methods There were 33 eyes with high myopia who accepted surgery treatment All surgeries were performed using topical anesthesia and clear corneal incision. The posterior chamber phakic intraocular lens manufactured with STAAR collamer was implanted between transparent lens and iris. During the course of the surgery, iridectomy was done at one clock. Each eye was examined carefully before and after surgery. The position of ICL was observed at 1, 3 and 6 months. Result All eyes of preoperative uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA)were 0.04± 0.06, 0.5± 0.3 respectively and postoperative were 0.5± 0.2, 0.8± 0.2 respectively. At sixth month of postoperative the anterior chamber depth was 2802± 297 m and ICL central vault was 329 m. UBM verified the contact between ICL and iris. Both haptics were supported by zonula in 22 eyes; one haptic was supported by zonula and other haptic by ciliary body in 7 eyes; Both haptics were supported by ciliary body in 4eyes. The extreme tip of two haptic was at sulcus in 20 eyes. In 6 eyes, rotation of the lens was observed. Conelusions Thephakic IOLs are a safety and effective treatment for the correction of high myopia. It is important that looking for a new and accurate method to measure sulcus diameter in order to reduce complication resulted by inaccurate ICL vault.