الفهرس 
MyopiaOnly 14 pages are availabe for public view
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Abstract
For a long time, many trials have been done in order to correct refractive errors. This was either with classical approaches such as spectacles and contact lenses or by refractive surgeries which have become an acceptable alternative for a large number of patients and surgeons over the past three decades.
Phakic IOL with its different types has become one of these surgical alternatives. The present work studied the effects of both Foldable iris-fixated anterior chamber pIOL [VeriFlex] (by AMO) and posterior chamber pIOL [ICL] (by STAAR Surgical) and compared them together.
Our study included forty eyes with high myopia. Twenty eyes, with spherical error ranging from -7.25D to -12.0D, were implanted with [VeriFlex]. Other twenty eyes, with spherical error ranging from -6.75D to -21.5D, were implanted with [ICL].
In both types; the surgery was safe, effective, predictable and had a low complication rate. It also provided rapid visual rehabilitation and long term stability.
Follow up of these eyes has been done for eighteen months postoperative. We found that, The BCVA improved one to two lines from the preoperative values in both types and the refractive results of both type were stable.
Regarding the Intraocular pressure (IOP); VeriFlex caused highly significant increase in IOP in the first day postoperative only, with a non significant change thereafter. In case of ICL, only one eye developed acute rise of IOP in the first day postoperative. This rise was due to insufficient size of PI that was dilated by Nd:YAG laser immediately . Then, the IOP re increased after three weeks due to the formation of posterior synechia. Surgical intervention was done to cut these synechia after which the IOP was normalized. Moreover, two eyes developed steroid induced glaucoma in the first week postoperative which was normalized within two days after replacement of steroids with NSAIDs eye DROPs and use of antiglaucoma eye DROPs.
As for the endothelial cell density; VeriFlex led to a decrease in the mean endothelial cell density which was 12.7% at the end of the follow up period. While, ICL led to a much less decrease in the mean endothelial cell loss which was only 3.82% at the end of the follow up period. Therefore, the ICL was superior over the VeriFlex as regards the effect on corneal endothelium.
On the other hand; our follow up visits revealed some complications that could be met with these types of pIOLs.