Modern cataract surgery is very safe and effective and generally seems straightforward but you do need to be aware what is involved and the decisions that need to be made about what intra-ocular lenses are most suitable for you.
Management of keratoconus is based on monitoring for progression and then corneal collagen cross-linking if necessary. Other procedures are available to improve quality of vision and reduce the need for contact lenses and glasses.
Surgical intervention for recurrent corneal epithelial erosion my be with anterior stromal puncture, excimer laser photo therapeutic keratectomy (PTK) or diamond burr keratectomy. Other general measures are also required.