AIM: To evaluate the efficacy of femtosecond laser assisted MyoRing intrastromal corneal implant and deep anterior lamellar keratoplasty (DALK) for management of moderate to advanced keratoconus regarding the degree of changes in visual acuity. refraction. corneal asphericity and aberrations. METHODS: A prospective non comparative interventional case study was conducted in Ophthalmolo... https://www.truvisionhealthftp.com/