Outcome of Iris-Claw Anterior Chamber Versus Scleral-Fixated Posterior Chamber IOL for Management of Ectopia Lentis
Narrative Responses:
Purpose
Ectopia lentis is often associated with zonular weakness, which makes surgery with lens extraction and implantation of an intraocular lens particularly challenging. Therefore, a proper surgical method is necessary to give optimum stability for the IOL and minimize the risk for complications.
Methods
40 eyes of 20 patients with ectopia lentis were assigend according to the surgical technique into1 of 2 groups:lensectomy, anterior vitrectomy, scleral fixed PCIOL and lensectomy, anterior vitrectomy, iris claw ACIOL. Preoperative and post operative ophthalmological examination, optical coherence tomography, endothelial cell count were performed.
Results
Mean age at the time of surgery was 6.2 years. In the PCIOL group there was one case of intra operative vitreous hemmorahge and one case of dislocated IOL occurs one year after surgery with no history of trauma, while in the ACIOL group, there was a postoperative corneal oedema in 7 cases which were associated with difficulty in constricting the pupil intra operative. Also, there was 2 cases of single claw disinsertion following trauma and all the complicated cases were sucssefully managed.
There was no statistically significant difference between the 2 groups regarding ECC or the central macular thickness
Conclusion
Scleral fixed and iris claw lenses produced comparable results regarding the BCVA, none of the patients in either groups deveoped cystoid macular oedema. The effect on ECC were observed in the ACIOL group, yet there was no significant difference between the preoperative and post operative data in the 2 groups.