Myopia is a significant public health issue worldwide. Today, people spend more and more time using computers and mobile phones. This has led to an increase in the number of patients with myopia. It is not always comfortable to wear heavy glasses, so corneal laser refractive surgery and phakic intraocular lens (pIOL) implantation are widely used to correct myopia. However, small-incision lenticule extraction (SMILE), laser-assisted in situ keratomileusis (LASIK), and some other corneal laser surgeries are too risky in patients with severe myopia because of insufficient corneal thickness. For these patients, laser in situ keratomileusis and small incision lenticule extraction may induce postoperative corneal ectasia. pIOL implantation can be used regardless of corneal thickness and topography, and thus is more suitable in such patients.

According to the site of implantation, pIOLs are classified as iris-fixated pIOLs, posterior chamber lenses, and anterior chamber angle-supported lenses. Angle-supported pIOLs are associated with corneal endothelial cell loss, iris retraction, secondary glaucoma, and subsequent pupil ovalization, and are rarely used. Iris-fixated pIOL and implantable collammer lenses have become more and more popular to correct high myopia. However, some postoperative long-term complications, such as endothelial cell loss, pigment precipitates, anterior subcapsular cataract, and postoperative intraocular light scattering need to be evaluated. More attention should be given to symptoms such as near vision, accommodation, binocular vision, and asthenopia.

In this Special Issue, we invite ophthalmologists to contribute original research articles and review articles, including new accurate preoperative measurements, recent devices, surgical techniques, short/middle/long-term outcomes and complications, and patient satisfaction.

Potential topics include but are not limited to the following:

• New advances and insights on examination, surgical techniques, and pIOLs design
• Short/middle/long-term outcomes and complications of phakic intraocular lens implantation
• Comparison between different types of phakic intraocular lenses
• Comparison between corneal laser surgery and pIOL implantation
• pIOL eye model experimental study on visual quality and optic theory
• Research on postoperative satisfaction-associated parameters, such as intraocular light scattering, tear film, dry eye, near vision, accommodation, binocular vision, and asthenopia
• Preoperative accurate measurement (e.g. anterior segment OCT, UBM, Pentacam system, corneal topography, etc.)
• Systematic reviews and meta-analyses based on pIOLs preoperative measurement, surgical techniques, and postoperative complications