The best replacement for keratoconus is astigmatism.

The best alternatives to keratoconus are rated as following:
★★★★★  astigmatism
★★★  pellucid
★★  ectasia
★★  pellucid marginal degeneration

Your alternative for keratoconus is not listed? Suggest!
Speaking about keratoconus, one probably shouldn't forget about hydrops.

Other search terms related to keratoconus and their ratings are:
★★★★★ hydrops
★★★ cataracts
lasik
You have in mind a companion for keratoconus and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of keratoconus in all years. Click on graph for more.
keratoconus
astigmatism
pellucid