Table 5.

Outcomes reported in literature comparing different CXL procedures (2013–2015)

Author (Year)	Techniques compared	Follow-up	Results		Type	Number of Eyes	Indication
			Kmax	BCVA
NG AL et al. (2015) [106]	Standard vs accelerated	1 year	Reduction Kmax in standard group	Improvement BCVA in standard CXL	CIS	26	Keratoconus
Shetty R et al. (2015) [107]	Standard vs Different Accelerated Protocols	1 year	Improvement Kmax in standard and accelerated group	Improvement BCVA in Standard and accelerated CXL	PR	138	Keratoconus
Rossi S et al. (2015) [108]	Standard vs TE	1 year	Improvement Kmax in standard and TE CXL	Improvement BCVA in standard and TE CXL	PC	20	Keratoconus
Brittingham et al. (2014) [109]	Standard vs accelerated	1 year	Stabilization K max in standard CXL		RCS	131	Keratoconus
Hashemian H et al. (2014) [110]	Standard vs Accelerated	15 months	Improvement Kmax in standard and accelerated CXL	Improvement BCVA in Standard and accelerated CXL	RCT	153	Keratoconus
Sherif AM (2014) [111]	Standard vs Accelerated	1 year	Stabilization Kmax	Improvement BCVA in Standard and accelerated CXL	RCT	25	Keratoconus
Stojanovic A et al. (2014) [112]	Standard vs TE	1 year	Stabilization Kmax for standard and TE CXL	Improvement BCVA in standard and TE CXL	RCT	40	Keratoconus
Tomita M et al. (2014) [113]	Standard vs Accelerated	1 year	Improvement Kmax in standard and accelerated CXL	Improvement BCVA in Standard and accelerated CXL	PC	48	Keratoconus
Cinar Y et al. (2014) [114]	Standard vs Accelerated	6 months	Improvement Kmax in standard and accelerated CXL	Improvement BCVA in Standard and accelerated CXL	PC	26	Keratoconus
Magli A et al. (2013) [115]	Standard vs TE	1 year	Improvement K max in standard and TE CXL	Improvement BCVA in standard and TE CXL	PC	37	Keratoconus

CIS= Comparative Interventional Study, PR= Prospective randomized, RCS= Retrospective case series, RCT= Randomized controlled trial, PC= Prospective comparative