A Comparative Study Of Posterior Chamber Phakic Intraocular Lens In The Treatment Of Low Myopia Below -3.0D And Other Degrees Of Myopia
Published 2023 - 41st Congress of the ESCRS
Reference: FP19.05 | Type: Free paper | DOI: 10.82333/pcky-n469
Authors: Qian Chen* 1 , Yan Yang 1 , Runjing Wei 1 , Zheng Wang 2
1Hongshan Aier Eye Hospital,Wuhan,China, 2Guangzhou Aier Eye Hospital,Guangzhou,China
Purpose
To evaluate the effects of posterior chamber phakic intraocular lens implantation with a central hole (EVO-ICL, STAAR Surgical) in patients with low, medium, high, and super high myopia.
Setting
Hongshan Aier Eye Hospital, Wuhan, China.
Methods
In this study, 403 eyes of 247 consecutive patients underwent EVO-ICL implantation to correct myopia and myopic astigmatism. All the enrolled eyes were divided into four groups: Group 1, the low myopia group, whose spherical equivalent (SE) was less than or equal to -3.0 diopters(D); Group 2, the moderate myopia group, SE between -3.13D and -6.0D; Group 3, high myopia group, SE between -6.13D and -9.0D; Group 4, the super-high myopia group, SE between -9.13D and -18.0D. Postoperative follow-up was scheduled for 1 day, 1 week, and 1 year. The efficacy, safety, predictability, and adverse events of ICL implantation in the low-grade myopia group were retrospectively observed and analysed and compared with the other three groups.
Results
At 1 year, the LogMAR UDVA in the four groups were -0.07±0.08, -0.07±0.06, -0.07±0.05, -0.05±0.08 (P>0.05). LogMAR CDVA in each group were -0.05±0.04, -0.04±0.05, -0.06±0.05, -0.05±0.06 (P>0.05). Meanwhile, 60%, 65%, 54%, and 51% of eyes in Groups 1, 2, 3, and 4 had an SE within ±0.25D at 1-year (P>0.05), respectively. 96%, 91%, 82%, and 82% of eyes in each group had an SE within ±0.5D (P>0.05). The efficacy index at 1 year postoperatively in each group was 1.19±0.21, 1.19±0.15, 1.18±0.16, and 1.24±0.24 (P>0.05), respectively. The safety index was 1.12±0.10, 1.10±0.11, 1.16±0.14, and 1.23±0.20 (P<0.05). Most notably, the vault at 1 year postoperatively was 575±152µm, 580±225µm, 544±203µm, and 573±218µm in each group (P>0.05), respectively.
Conclusions
The use of posterior chamber phakic intraocular lens implantation for the correction of low myopia is effective, safe, and predictable, which provides a new viable surgical option for these patients.