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To evaluate the incidence of central hole‐induced ring‐shaped dysphotopsia after posterior chamber phakic implantable collamer lens (ICL) with central hole (hole ICL) implantation and to investigate the causes of central hole‐induced dysphotopsia.

The clinical study enrolled 29 eyes of 15 consecutive myopic patients implanted with hole ICL. The incidence of ring‐shaped dysphotopsia after hole ICL implantation was evaluated. In the experimental simulation study, non‐sequential ray tracing was used to construct myopic human eye models with hole ICL and ICL without a central hole (conventional ICL). Simulated retinal images measured in log‐scale irradiance were compared between the two ICLs for an extended Lambertian light‐emitting disc object 20 cm in diameter placed 2 m from the corneal vertex. To investigate the causes of hole‐induced dysphotopsia, a series of retinal images …