Abstract
This study aimed to investigate the incidence, patient background, and postoperative prognosis of implantable collamer lens (ICL) dislocation. We retrospectively reviewed all cases of ICL dislocation at four major refractive surgery centers in Japan until December 2019. The incidence, patient background, cause of dislocation, complications of repositioning surgery, and postoperative visual function were investigated. Seven ICL dislocations [0.072% of total ICL-implanted eyes (9775 eyes)] occurred at an average of 28.6 months (11–82 months) postoperatively. All patients were male. Five eyes were injured during sports activities, one due to a fall from a bicycle, and another due to ocular blunt trauma caused by a mortuary tablet. Two patients had re-dislocation in the same eye. Retinal detachment occurred after repositioning surgery in one patient, and scleral buckling surgery was performed without ICL removal. ICL dislocation is a rare complication of ICL surgery; repositioning surgery is effective, but retinal complications may occur.
Highlights
Implantable collamer lenses (ICL) have been found to be effective and safe for the correction of mild to moderate and high myopia [1–4]
This study aimed to retrospectively review cases of ICL dislocation that occurred at four major refractive surgery centers in Japan and determine the incidence of ICL dislocation, patient background, and prognosis after ICL repositioning surgery
Seven ICL dislocations occurred during the study period
Summary
Implantable collamer lenses (ICL) have been found to be effective and safe for the correction of mild to moderate and high myopia [1–4]. Toric ICL implantation is more effective than laser in situ keratomileusis (LASIK) for correcting high astigmatism [5]. Laser corneal refractive surgery is contraindicated in eyes with thin or abnormal corneas, such as those with keratoconus, and ICL implantation has been confirmed to be highly effective and safe in patients with mild keratoconus or borderline pachymetry due to its minimal impact on the cornea [6– 8]. Laser corneal refractive surgery, such as LASIK, may lead to ocular trauma, resulting in flap displacement [13, 14]. Surface ablation surgeries, such as photorefractive keratectomy, laser-assisted subepithelial keratectomy, and epi-LASIK, are recommended for patients with hobbies or occupations that are associated with a risk of direct impact to the eye.
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