Femtosecond Laser Implantation of a 355-Degree Intrastromal Corneal Ring Segment in Keratoconus: A Three-Year Follow-Up

Table 6

The postoperative complications.

	12 months			24 months			36 months
	Total no.	Moderate keratoconus	Severe keratoconus	Total no.	Moderate keratoconus	Severe keratoconus	Total no.	Moderate keratoconus	Severe keratoconus
Infectious keratitis	0	0	0	0	0	0	0	0	0
Corneal neovascularization	7 (18.4%)	3 (18.75%)	4 (18.18%)	11 (28.9%)	5 (31.16%)	6 (27.27%)	14 (36.84%)	6 (37.5%)	8 (36.36%)
Corneal melting	5 (13.15%)	2 (12.5%)	3 (13.63%)	8 (21%)	3 (18.75%)	7 (22.73%)	10 (26.3%)	4 (25%)	6 (27.27%)
Ring extrusion	6 (15.78%)	2 (12.5%)	4 (18.18%)	10 (26.3%)	4 (25%)	6 (27.27%)	12 (31.5%)	5 (31.25%)	7 (31.82%)