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Clinical research on phakic toric implantable collamer lens to correct high myopia associated with astigmatism

Session Details

Session Title: Phakic IOLs and keratoconus or high astigmatism

Session Date/Time: Sunday 06/10/2013 | 17:00-18:30

Paper Time: 17:28

Venue: Elicium 1 (First Floor)

First Author: : K.Yu CHINA

Co Author(s): :                  

Abstract Details

PPurpose:

To assess the effectiveness, predictability, safety and stability of phakic Toric Implantable Collamer Lens (TICL).

Setting:

Zhongshan Ophthalmic Center，Sun Yat-sen University

Methods:

20 patients (34 eyes) whose myopic refraction was -11.17±2.39D（range:-6.50 to -17.00）, astigmatism was -2.62±0.92D（range:-1.50 to -4.75）were underwent TICL. The follow-up was 1st day, 1st week, 1st month , 6th months and 1st year postoperatively. The uncorrected visual acuity (UCVA), refraction, vaulting and axis of TICL lens, intraocular pressure (IOP), slit lamp examination and fundus would be checked. Paired-t test was used to analyze the data, Bootstrap test would be used; categorical data was analyzed in percentage.

Results:

Significant improvement of UCVA was observed at 1st day postoperatively over preoperative best corrected visual acuity (BCVA) (0.98±0.35 VS 0.83±0.29, P=0.001); UCVA was also significantly improved at 1st week over 1st day postoperatively (1.13±0.35 VS 0.98±0.35, P=0.011), while was stable between the next follow-ups (1.13±0.35 VS 1.14±0.33 VS 1.09±0.38 VS 1.01±0.40, P=0.270, 0.066, 0.217). No significant difference was observed between the preoperatively reserved and the follow-ups’ refraction (0.05±0.11D VS -0.14±0.90D VS -0.03±0.63D VS -0.15±0.78D VS -0.34±1.02D VS -0.65±1.18D, P=0.302, 0.634, 0.187, 0.222, 0.451). Vaulting was stable (1.16±0.62CT VS 1.32±0.53CT VS 1.29±0.46CT VS 1.24±0.35CT VS 1.15±0.44CT, P=0.154, 0.724, 0.106, 0.189). Axis of 1st year postoperatively was significantly different from that of surgical designed（3.47±28.82°VS 0.31±6.05°,P=0.016）, the corresponding change of refraction was within 1.25D. 1eye got high IOP at 1st day, and 3 eyes got opacitas at 1st year postoperatively, but most could recover through treatment. No other complications were observed.

Conclusions:

TICL was effective, predictable and safe to correct high myopia associate with astigmatism; UCVA, refraction and vaulting of each follow-up in one year after surgery were stable, while the center axis of TICL lens was not—TICL lens would rotate in the eye.

Financial Interest:

NONE