Posters
Consecutive contralateral comparison of toric and non-toric implantable collamer lenses V4c in vault after implantation for myopia and astigmatism
Poster Details
First Author: J.Zhao CHINA
Co Author(s): J. Zhao X. Wang X. Zhou
Abstract Details
Purpose:
To investigate the characteristics and factors affecting vault performance after toric implantable collamer lens (TICL) (V4c) implantation for correction of myopia and astigmatism.
Setting:
Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, China
Methods:
Sixty-eight eyes from 34 patients with myopia and astigmatism who underwent implantation of TICL in one eye (V4c) (group A) and identically sized ICL (V4c) (group B) in the contralateral eye were included. Follow-up time ranged from 6 to 16 months. Vault was compared between the two groups and correlations between vault and pupil diameter (PD), crystalline lens rise, cylindrical power, white to white distance (WTW), horizontal sulcus-to-sulcus distance (STS), TICL/ICL size-WTW, TICL/ICL size-STS, and STS-WTW were analyzed.
Results:
The safety indices were 1.24 and 1.30 and the efficacy indices were 1.17 and 1.20 for groups A and B, respectively. Vault of TICL was significantly higher than that of ICL (553.52±219.19 μm vs 449.41±172.99 μm, P < 0.001). TICL/ICL size-WTW, TICL/ICL size-STS, ACD, and PD were positively correlated with vault (all P <0.05). Age and crystalline lens rise were negatively correlated with vault (all P <0.01). Crystalline lens rise, ICL/TICL size-WTW, PD, WTW, and cylindrical power of TICL were significant factors associated with vault (adjusted R2 =0.48), but ACD and TICL/ICL size-STS were not.
Conclusions:
ICL (V4c) implantation is safe and effective for correcting myopia and astigmatism. Vault after TICL implantation is higher than that with ICL. Crystalline lens rise, PD, WTW, and cylindrical power should also be considered while choosing proper size of TICL (V4c) to achieve an optimal vault.
Financial Disclosure:
None
