Objective and subjective diagnostic parameters in the fellow eye of unilateral keratoconus

BMC Ophthalmology

Table 2 Roc curve analysis for the ability of different parameters to differentiate between forme fruste keratoconus eye and control eyes

parameter	AUC	SE	95%CI	P value	cutoff	sensitivity	specificity
Ks	0.6	0.092	0.42,0.78	0.353	42.5	64%	50%
Kf	0.5	0.091	0.3,0.6	0.93	NA	NA	NA
Km	0.82	0.06	0.68,0.95	0.353	42.4	64%	80%
CCT	0.58	0.1	0.38,0.77	0.446	NA	NA	NA
CT min	0.61	0.6	0.4,0.8	0.3	516	60%	80%
PE	0.45	0.129	0.02,0.07	0.67	NA	NA	NA
BDE	0.60	0.094	0.41,0.77	0.38	3.5	53%	80%
PPI avg	0.404	0.016	o.19,o.61	0.37	NA	NA	NA
PPI max	0.64	0.093	0.64,0.83	0.174	1.31	50%	70%
ART avg	0.57	0.10	0.36,0.78	0.486	NA	NA	NA
ART min	0.56	0.10	0.35,0.77	0.551	NA	NA	NA
ART max	0.88	0.056	0.77,0.99	< 0.001	404	82%	70%
D index	0.67	0.102	0.47,0.87	0.097	1.2	71%	60%

ART Ambrosio relational thickness, AUC area under curve, avg. average, BDE back difference elevation, CCT central corneal thickness, CI confidence interval, CT min minimum corneal thickness, D index multimetric D, Kf flat keratometry, Km mean keratometry, Ks steep keratometry, max maximum, min minimum, NA not applicable,SE standard error, PE posterior elevation, PPI pachymetric progression index

ISSN: 1471-2415