Evaluation of a Tangential Map-Based Nomogram for Intrastromal Corneal Ring Segments’ Implantation in Keratoconus: One Year Results

Table 7

Value of change in outcomes of both groups at follow-up visits for cases with cone location discrepancy between maps. ThL: thinnest corneal location.

	3 months			6 months			12 months
	Axial (n = 18)	Tangential (n = 14)		Axial (n = 18)	Tangential (n = 14)		Axial (n = 18)	Tangential (n = 14)
Δ UDVA	0.2 ± 0.1	0.3 ± 0.08	0.03	0.25 ± 0.1	0.35 ± 0.2	0.03	0.15 ± 0.1	0.45 ± 0.1	0.02
Δ CDVA	0.17 ± 0.07	0.19 ± 0.1	0.7	0.13 ± 0.07	0.3 ± 0. 2	0.002	0.15 ± 0.05	0.45 ± 0.1	0.002
Δ MRSE	3.7 ± .3	6.5 ± 2.9	0.4	3.8 ± 1.2	7.2 ± 2.1	0.03	3.9 ± 0.9	8.4 ± 2.7	0.03
Δ Kmax	−4.3 ± 1.3	−7.2 ± 2.3	0.2	−5.1 ± 2.09	−7.8 ± 1.69	0.3	−5.5 ± 0.8	−8.3 ± 2.1	0.04
Δ Km	−4.2 ± 1.2	−4.7 ± 1.8	0.5	−3.8 ± 1.3	−4.2 ± 2.9	0.7	−4.7 ± 1.2	−6.00 ± 1.5	0.1
Δ Q	−0.4 ± 0.2	−0.42 ± 0.3	0.6	−0.3 ± 0.2	−0.52 ± 0.3	0.5	−0.3 ± 0.6	−0.6 ± 0.4	0.4
Δ ThL	31.6 ± 13.6	30.5 ± 9.2	0.3	10.1 ± 2.3	22.4 ± 12.7	0.4	23.1 ± 11.2	28.3 ± 10.3	0.9