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Clinical safety after implantation of the phakic implantable collamer lens with a central hole: two year follow-up

Poster Details

First Author: J.Zhou CHINA

Co Author(s):                        

Abstract Details


To study long-term safety and effectiveness of ICL V4c implantation.


Chengdu Aier Eye Hospital


ICL V4c implantation was done for 1154 eyes of 586 high myopia patients from January to December, 2015. Mean preoperative spherical equivalent (SE) was -9.573±3.192D, and the follow-up duration was 2 years. Postoperative uncorrected distance visual acuity (UDVA), best corrected visual acuity (BCVA), refractive error, intraocular pressure (IOP), corneal endothelial cell count, vault, adverse reactions, and complications were evaluated.


2 years postoperatively UDVA was 1.049±0.192, BCVA was 1.126±0.151. Compared with preoperative BCVA, UDVA increased by 2 lines or above in 51.49% of eyes, no eye lost 1 or more lines of BCVA. Efficacy index and safety index were 1.14±0.31 and 1.22±0.25 respectively. Postoperative SE was -0.319±0.315 D, 94.95% of eyes were within ±0.5 D and 100% of eyes were within ±1.0 D. Mean vault was 362.2±222.6 μm. Postoperative retinal detachment occurred in 1 eye. Increased IOP occurred in 4 eyes. No cataract were found. There was no significant loss in corneal endothelial cells.


It was observed in the 2-year clinical study of V4c implantation that, postoperative complication incidence was low, corneal endothelia and crystalline lenses were not significantly affected, and the surgery had good safety, effectiveness and predictability.

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