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Visual outcome and quality of a new phakic intraocular lens with KS Aquaport: a revival of the CentraFLOW design

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Session Details

Session Title: Presented Poster Session 14: Phakic IOLs 1

Session Date/Time: Monday 15/09/2014 | 09:30-11:00

Paper Time: 09:45

Venue: Pod 2 (Poster Village)

First Author: : S.Nanaiah INDIA

Co Author(s): :    M. Kummelil   S. Nagappa   R. Shetty   S. Das     

Abstract Details


To evaluate the visual outcome and quality after implantation of a new phakic intraocular lens with KS Aquaport


Tertiary eye care and research centre


This prospective non randomised study included consecutive patients who opted for implantation if a phakic intraocular lens for high myopia after an informed consent. Uncorrected visual acuity, best corrected visual acuity, refraction and anterior chamber depth (ACD) was noted in all patients. Selection of the phakic lens [Visian Implantable collamer lens (ICL) V4c with the KS-Aquaport, Staar surgical] was done according to company protocols on the online calculator. All patients underwent implantation of the selected ICL under aseptic conditions. Any intraoperative or significant post operative events were noted. The uncorrected visual acuity, best corrected visual acuity and residual refraction were checked in all patients 6 weeks after surgery. Aberrometry was done by ray tracing preoperatively and at the end of 6 weeks and the change in higher and lower order aberrations were noted.


69 eyes of 42 patients were included in the study. The mean age of the patients was 26.48 ± 5.11 years. There were 20 females and 24 males. The mean pre operative LogMar uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), sphere and cylinder were 1.4 ± 0.28, 0.25 ± 0.25; -10.19 ± 4.87 Diopters(Ds) and -1.79 ± -1.31 Diopters (Dc) respectively. The mean ACD was 3.15 ± 0.22mm. The mean expected sphere and cylinder were -0.39 ± 0.6 Ds and 0.26 ± 0.2 Dc respectively. There was no significant difference in the expected sphere and spherical refraction after surgery (p=0.180). There was a statistically significant improvement in the final UCVA and BCVA in patients after ICL implantation (p=0.000). The total defocus showed a significant reduction after surgery (p= 0.006). The higher order aberrations did not show any significant difference (p=0.346). There was no significant difference in the Strehl ratio before and after surgery. Raised IOP was noted on day 1 in 3 eyes of 2 patients (4.34%). All three patients were managed medically and responded well to treatment.


In our study, good visual outcome was noted after implantation of the new Visian ICL V4c with the KS-Aquaport. The best corrected visual acuity improved from that before ICL implantation. No increase in higher order aberration was noted. The procedure was safe with 95% of patients having an uneventful postoperative outcome.

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