一项评估角膜散光是否会增加人工晶状体（IOL）预测位置与实际位置之间屈光不可预测性的研究。
A study to evaluate whether CTR increases refractive unpredictability between predicted and actual IOL position.
作者信息
Baranwal V K, Kumar Santosh, Mishra Avinash, Dutta Ajay K
机构信息
Senior Adviser (Ophthalmology), Command Hospital (CC), Lucknow, UP, India.
Classified Specialist (Ophthalmology), Command Hospital (SC), Pune-40, India.
出版信息
Med J Armed Forces India. 2014 Jan;70(1):36-8. doi: 10.1016/j.mjafi.2012.08.029. Epub 2012 Oct 31.
BACKGROUND
The surgical management of cataract associated with extensive zonular loss presents a challenge for ophthalmic surgeon. Capsular Tension Ring (CTR) is commonly being used to stabilize the capsular bag in patients with zonular dialysis. CTR helps to avoid capsular collapse and vitreous presentation in AC during surgery and maintains the capsular bag, allowing the circular contour of the capsular bag, allowing intra ocular lens to be easily placed in the bag. The aim of the study was to know if there is any shift of IOL following use of CTR ring.
METHOD
We did a Ultrabiomicroscopy (UBM) examination to find out shift in PCIOL in cases in which CTR ring and compared it with cases without CTR ring.
RESULT
It was found out through UBM in this study that there is actually a posterior shift of PCIOL after use of CTR ring leading to hypermetropic correction needed after surgery.
CONCLUSION
It is suggested that posterior shift of IOL following use of CTR should be kept in mind and the IOL implanted should be of + 1.0 to 2.0 D more than that calculated preoperatively.
背景
对于伴有广泛晶状体悬韧带缺失的白内障患者，手术治疗对眼科医生来说是一项挑战。囊袋张力环（CTR）常用于稳定晶状体悬韧带断裂患者的囊袋。CTR有助于避免手术过程中囊袋塌陷和玻璃体进入前房，并维持囊袋，保持囊袋的圆形轮廓，使人工晶状体能够轻松植入囊袋。本研究的目的是了解使用CTR环后人工晶状体是否有移位。
方法
我们进行了超声生物显微镜（UBM）检查，以确定使用CTR环的病例中后房型人工晶状体（PCIOL）的移位情况，并与未使用CTR环的病例进行比较。
结果
通过本研究中的UBM发现，使用CTR环后PCIOL实际上向后移位，导致术后需要远视矫正。
结论
建议应牢记使用CTR后人工晶状体向后移位的情况，植入的人工晶状体度数应比术前计算的度数多+1.0至2.0 D。
Zotero 插件