The ZEISS MEL 90 excimer laser reshapes the corneal surface to correct short-sightedness, long-sightedness, and astigmatism, forming the core of any LASIK or PRK refractive surgery service. Paired with a femtosecond laser for flap creation, it enables a full in-house refractive surgery offering — a premium, high-margin service line for eye hospitals expanding beyond routine ophthalmology.