| Autor: |
Doron Neumann, Ehud I. Assia, Michael Blumenthal |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
European Journal of Implant and Refractive Surgery. 2:15-19 |
| ISSN: |
0955-3681 |
| DOI: |
10.1016/s0955-3681(13)80118-9 |
| Popis: |
It is generally accepted that the optimal location of the IOL is in the capsular bag. This location is advantageous only if the IOL remains permanently in the capsular bag. The anatomical factors directing guidelines for a 5.0–6.0 mm round capsulotomy are: anterior posterior position of the crystalline lens, zonular frontier and zonular pull. To express the nucleus without the danger of capsular tears, use of the closed system technique which permanently maintains the volume and the pressure by using an anterior chamber maintainer is recommended. Thus hydrodissection and hydroexpression of the nucleus through small limbal incision are facilitated, without tear at the capsulotomy margin. The dimension of the crystalline capsular bag changes from 9.6 mm to 10.7 mm after ECCE. Thus 11.0 mm loop-to-loop lenses are advocated. Uncertainty about secure ‘in the bag’ implantation is the reason for the use of 13.0–14.0 mm lenses at present. As more surgeons are mastering round capsulorhexis capsulotomy, a greater number will find it safe to use 11.0 mm new design lenses with asymmetrical loops. In fact, there would be no reason not to implant 11.0 mm lenses. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
