Corneal biomechanical changes in allergic conjunctivitis

Table 2 Comparison of corneal tomographic parameters between the non-allergic conjunctivitis (NAC) and allergic conjunctivitis (AC) groups

Parameter	NAC	AC	p^a
Parameter	Mean ± SD	Mean ± SD	p^a
CCT (μm)	550.45 ± 21.79	555.80 ± 25.89	0.45
K1 (D)	42.43 ± 1.05	42.50 ± 1.27	0.85
K2 (D)	43.40 ± 1.08	43.91 ± 1.45	0.18
Km (D)	42.90 ± 1.03	43.20 ± 1.28	0.38
Kmax (D)	43.90 ± 1.14	44.52 ± 1.51	0.13
ISV	16.50 ± 4.21	23.40 ± 10.35	0.01
IVA	0.14 ± 0.04	0.19 ± 0.10	0.04
KI	1.03 ± 0.02	1.05 ± 0.03	0.02
CKI	1.01 ± 0.00	1.01 ± 0.01	0.07
IHA	5.05 ± 4.16	6.75 ± 4.04	0.16
IHD	0.01 ± 0.00	0.02 ± 0.01	0.03
BAD-D	0.88 ± 0.37	1.41 ± 0.59	0.001

NAC = non-allergic conjunctivitis; AC = allergic conjunctivitis; CCT = central corneal thickness; K1 = keratometry of the flattest meridian; K2 = keratometry of the steepest meridian; Km = mean central keratometry; Kmax = maximum keratometry; ISV = index of surface variance; IVA = index of vertical asymmetry; KI = keratoconus index; CKI = central keratoconus index; IHA = index of height asymmetry; IHD = index of height decentration; BAD-D = Belin/Ambrosio enhanced ectasia total deviation index
^a Independent samples t-test

ISSN: 2326-0254