Cumming J S
Anaheim Eye Medical Group, Inc., California 92801.
J Cataract Refract Surg. 1993 Mar;19(2):263-74. doi: 10.1016/s0886-3350(13)80954-6.
Complications after implantation of 503 plate haptic silicone intraocular lenses were compared with those after implantation of 253 silicone three-piece polypropylene loop lenses. The uncorrected visual acuities were also compared. Capsulorhexis and endocapsular phacoemulsification were used in all cases. The incidence of cystoid macular edema and posterior capsule opacification requiring a YAG capsulotomy were significantly higher in the cases with polypropylene three-piece loop lenses. Pigment dispersion and decentration also occurred more frequently in this group. This is probably because the 10.5 mm plate haptic lens is more rigid than the polypropylene loop lens. It also fixates more posteriorly within the capsular bag than the anteriorly located polypropylene lens. Patients implanted with a plate haptic silicone intraocular lens through a 3.5 mm scleral incision had significantly better uncorrected visual acuity at five to six weeks postoperatively than those with a three-piece silicone lens that required a 4.5 mm incision for insertion.
对植入503型平板襻硅胶人工晶状体后的并发症与植入253型三件式聚丙烯襻硅胶人工晶状体后的并发症进行了比较。还比较了未矫正视力。所有病例均采用连续环形撕囊和囊袋内超声乳化术。三件式聚丙烯襻人工晶状体组中，需要进行YAG激光后囊切开术的黄斑囊样水肿和后囊混浊的发生率显著更高。该组色素播散和人工晶状体偏位也更频繁发生。这可能是因为10.5毫米平板襻人工晶状体比聚丙烯襻人工晶状体更硬。而且它在囊袋内的固定位置比位于前方的聚丙烯人工晶状体更靠后。通过3.5毫米巩膜切口植入平板襻硅胶人工晶状体的患者术后五至六周时的未矫正视力明显优于需要4.5毫米切口插入的三件式硅胶人工晶状体患者。
