Abstract:

 Objective To evaluate the effect of double incision joint nuclear extraction with two-dialer in extracapsular cataract extraction (ECCE) procedure for restoring-vision cataract projects. Design Retrospective case series. Participants We retrospectively analyzed the 305 patients (all 342 eyes) who underwent the double incision joint nuclear extraction with two dialers ECCE from September 2012 to February 2015. Methods All patients were treated in our hospital with double incision joint nuclear extraction with two-dialer ECCE, and the operation time, intraoperative and postoperative appeared complications were recorded. Uncorrected visual acuity (UCVA) was measured with standard Snellen visual charts, and was classified into ≥ 0.05, ≥ 0.3, ≥0.5. Non-contact tonometer was used to measure intraocular pressure (IOP). Corneal topography was used to measure K1 and K2 to determine the astigmatism. The measurements were repeated 1 month after surgery and compared to corresponding pre-operative values. Main Outcome Measures The average time length of operation, UCVA, IOP, corneal astigmatism, posterior capsule rupture, pupil deformation, and corneal edema. Results The average time length of operation was 4.1±0.2 min. There were 338(98. 83%) eyes whose post-operative UCVA ≥ 0.05, 305(89. 18%) eyes ≥0.3, and 179(52.34%) eyes ≥0.5. There were 251(73.39%) eyes whose post-operative best-corrected visual acuity ≥ 0.5. No posterior capsular rupture (PCR) happened. Mild pupil deformation due to iris injury during surgery happened in 2 eyes (0.58%). One eye (0.29%) couldn't implant artificial lens, 1 eye (0.29%) needed suture the scleral tunnel incision.  Post-operation corneal edema happened in 39 eyes (11.4%) and 12 eyes (3.50%) suffered transient intraocular hypertension post-operatively. The average corneal astigmatism was (0.93±0.33) D after 1 month, not significantly different from (0.89±0.36) D before the operation (P=0.12). Conclusions During restoring-vision cataract projects, double incision joint nuclear extraction with two dialers in ECCE procedure is safe and effective, could be the primary choice for primary hospitals. （Ophthalmol CHN，2016，25： 82-85）

Key words: cataract/ surgery, extracapsular cataract extraction