Mahdy Mohamed A E S
Department of Ophthalmology, Rustaq Hospital, Rustaq, Sultanate of Oman, and Department of Ophthalmic, Al-Hussein University Hospital, Al-Azhar University, Cairo, Egypt.
Oman J Ophthalmol. 2012 May;5(2):83-6. doi: 10.4103/0974-620X.99369.
The purpose was to assess the safety and frequency of intraoperative complications of phacoemulsification using an in situ nuclear disassembly technique in pseudoexfoliation (PEX) cases.
The work was done in Rustaq Hospital, Rustaq, Sultanate of Oman.
This prospective, interventional, noncomparative study included 103 cases of cataract with pseudoexfoliation that underwent phacoemulsification with in situ nuclear disassembly using Alcon Infinity machine with Ozil handpeice and Kelman-style 45° phacoemulsification tip.
Of the 103 cases, 55 males (53.4%) and 48 (46.6%) females, one case developed posterior capsular rupture, and four cases developed zonular dehiscence that was partial in three cases and >180° in one case only. The best corrected visual acuity (BCVA) 4 weeks postoperatively using logMAR notation was as follows: 66 cases (65.1%) had BCVA of 0.30 or better (logMAR notation), and 37 cases (35.9%) had BCVA of 0.48 or less.
Safe and efficient phacoemulsification without nuclear rotation could be achieved in cases pseudoexfoliation in which zonular weakness is a concern by utilizing the versatility of Kelman style phaco tip to do lateral sweep sculpting and in situ cracking techniques. It prevents zonular stress by avoiding manipulation or rotation of the nucleus in cases.
评估在假性剥脱（PEX）病例中使用原位核分解技术进行超声乳化手术的安全性及术中并发症的发生率。
研究在阿曼苏丹国鲁斯塔克的鲁斯塔克医院开展。
这项前瞻性、干预性、非对照研究纳入了103例伴有假性剥脱的白内障病例，这些病例使用爱尔康Infinity机器及奥兹尔手柄和凯尔曼式45°超声乳化针头，通过原位核分解技术进行超声乳化手术。
103例病例中，男性55例（53.4%），女性48例（46.6%）。1例发生后囊破裂，4例发生悬韧带断裂，其中3例为部分断裂，仅1例超过180°。术后4周采用最小分辨角对数（logMAR）表示法的最佳矫正视力（BCVA）如下：66例（65.（1%）的BCVA为0.30或更好（logMAR表示法），37例（35.9%）的BCVA为0.48或更低。
对于存在悬韧带薄弱问题的假性剥脱病例，通过利用凯尔曼式超声乳化针头的多功能性进行侧向扫刮塑形和原位劈裂技术，可实现无核旋转的安全、高效超声乳化手术。该技术通过避免术中对晶状体核的操作或旋转来防止悬韧带受力。
