Table 3.

Corneal thickness in each diameter concentric circles and the difference P values between superior, inferior, nasal, and temporal areas in keratoconic patients after FBDALK

Diameter (mm)	Corneal thickness (μm)					P value
	Superior	Inferior	Nasal	Temporal	Mean
2	515±45	495±44	515±41	498±43	495±40	0.03*
4	568±48	533±47	562±42	542±46	540±39	0.00*
6	619±52	587±54	607±53	594±57	589±45	0.02*
8	660±79	643±74	653±76	629±70	633±61	0.20
Mean	547±68	565±79	584±75	565±74

Data are expressed as mean±standard deviation (n=47).

^*One-way ANOVA, significant at the 0.05 level