Corneal ectasia is a progressive disorder in which microstructural changes within the cornea cause an alteration of its normal gradient curvature and of its biomechanical behavior. Over the few years, different treatments have proved to be safe and effective in halting or slowing the corneal ectasia progression and/or in remodeling of the cornea (such as corneal collagen cross-linking and/or intrastromal corneal ring segments).

The aim of this special is to compile the latest researches about the surgical and parasurgical treatments of corneal ectasia not only from a therapeutic perspective, but also for its refractive correction. We invite researchers to submit original articles as well as review articles that will contribute to knowing the best alternatives for a refractive correction of patients with corneal ectasia.

Potential topics include but are not limited to the following:

• Patient selection for surgical and parasurgical treatment in corneal ectasia patients
• Genetic testing for corneal dystrophies or corneal ectatic disorders as a preselection need prior to acceptance for refractive correction
• Phakic intraocular lens implantation and refractive lens exchange in patients with corneal ectasia
• Protocols for intrastromal corneal ring in different patter of corneal ectasia
• Surface ablation in keratoconus patient
• Risk factor and prognosis of surgical and parasurgical refraction correction
• Numerical microstructural models of the cornea
• Wavefront advantages of surgical and parasurgical treatment
• Biomechanical behavior of the ectasic cornea after treatment
• Refractive advantages of different corneal collagen cross-linking: iontophoresis, accelerated cross-linking, and standard and localized cross-linking