Research progress on position stability and visual quality changes in the eye after implantable collamer lens implantation

Abstract

Implantable collamer lens(ICL)and toric ICL(TICL)are clinically common types of posterior chamber phakic intraocular lenses, they are mainly used to correct high myopia and low-to-moderate myopia of eyes whose corneal conditions are not suitable for corneal laser surgery. Accurate preoperative measurement, safe intraoperative implantation and appropriate postoperative location of lenses are critical to ensure the outcome of ICL implantable, and the appearance of V4c ICL with a central hole ensures the safety of this surgery to a greater extent. However, the intraocular position of both ICL and TICL is not invariable. Some studies have shown that the vault has a trend of decreasing year by year after ICL surgery, but its reason is unknown. And spontaneous rotation may occur after the TICL surgery, thereby causing visual loss, which is one of the main causes of TICL replacement. And postoperative changes in the position of the central hole also need attention. In addition, the visual quality of the operated eye will change after ICL/TICL implantation, but whether the change of intraocular positions of implanted lenses will affect the postoperative visual quality is also a problem that needs to be paid attention to and explored. Therefore, this paper reviewed the postoperative changes in vault, TICL axis, position of the central hole and their causes, as well as the effects of these changes on postoperative visual quality, offering valuable clinical guidance for accurate preoperative selection of ICL/TICL and surgical design, so as to improve the effectiveness and stability of ICL implantation in correction of myopic refractive error.

Keywords

• implantable collamer lens(icl)
• vault
• rotation degree
• central hole
• high-order aberration