Irregular corneal shape can distort optics in a way glasses can’t fully neutralise.

Not always. Options may include Corneal RGP, hybrid, scleral, or other designs depending on corneal shape, goals, and tolerance.

Complexity usually relates to eye shape, stability, and design needs (e.g., asymmetric scleral landing zones, higher-order optics, post-surgical surfaces).

Yes when needed; especially for monitoring progression or when procedures are being considered.