Abstract
BackgroundThis study sought to compare the visual quality between intraocular collamer lens (EVO-ICL) implantation and small-incision lenticule extraction (SMILE) and determine the appropriate surgical method to treat patients with high myopia (− 6.25 to − 10 D).MethodsA total of 48 eyes underwent EVO-ICL implantation and another 48 eyes underwent SMILE. The uncorrected distance visual acuity (UDVA), best-corrected distance visual acuity (BCVA) and equivalent spherical degree were compared across the SMILE (− 6.25 to − 10 D) and EVO-ICL (− 6.25 to − 10 D) implantation groups. Preoperative and postoperative visual quality parameters were compared between and within groups.ResultsThe OQAS II values (OV 100%) one week and one month after surgery and the modulation transfer function (MTF), OV 20% and OV 9% values one week after surgery in the SMILE group were lower than the respective preoperative values. The objective scatter index (OSI) value increased one week as well as one month after surgery compared with the preoperative values. The MTF cut-off value of the SMILE group was lower than that of the EVO-ICL implantation group three months after surgery.ConclusionsFor patients with high myopia, the postoperative visual quality of EVO- ICL implantation was slightly better than that of SMILE.
Highlights
This study sought to compare the visual quality between intraocular collamer lens (EVO-implantable collamer lens (ICL)) implantation and small-incision lenticule extraction (SMILE) and determine the appropriate surgical method to treat patients with high myopia (− 6.25 to − 10 D)
Our study found that differences in preoperative equivalent spherical D, uncorrected distance visual acuity (UDVA) and best-corrected distance visual acuity (BCVA) between the SMILE (− 6.25 to − 10.0 D) and EVO-ICL (− 6.25 to − 10.0 D) groups were not significant (Table 1)
The results in this study showed that the visual quality of the SMILE group one week after surgery was lower than that before surgery
Summary
This study sought to compare the visual quality between intraocular collamer lens (EVO-ICL) implantation and small-incision lenticule extraction (SMILE) and determine the appropriate surgical method to treat patients with high myopia (− 6.25 to − 10 D). Due to the increasing high prevalence over the past few decades, myopia remains a significant public health issue in some areas of the world, especially East Asia [2]. Myopia is measured in dioptres and divided into four status groups (low, moderate, high and severe) based on the pathogenesis [3, 4]. Treatments including implantable collamer lens (ICL) and small-incision lenticule extraction (SMILE) have been widely used to correct near-sightedness, the optimal surgical methods for patients with high myopia still remains controversial. A novel ICL operation based on an artificial hole (EVO Visian Implantable Collamer Lens) has been developed. LASIK is accepted by both doctors and patients due to the
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