Table 2.

Comparison between clinical characteristics and corneal alterations of the study population

Clinical characteristics	Corneal ulceration and/or perforation	Superficial corneal alterations	p value
	M, SD	M, SD
Age (years)	51.93 ± 20.1	62.54 ± 14.71	0.0587
	n (%)	n (%)
Sex
Female	8, 57.14	9, 32.14	0.1836
Male	6, 42.86	19, 67.86	0.1836
Clinical staging
I	0, 0	19, 67.86
II	0, 0	9, 32.14
III	14, 100	0, 0
Diseased eye
Right	6, 42.86	9, 32.14	0.5159
Left	7, 50	11, 39.29	0.5298
Both	1, 7.14	8, 28.57	0.2302
Diabetes mellitus	2, 14.29	15, 53.57	0.0204
Systemic arterial hypertension	1, 7.14	10, 35.71	0.0668
Previous corneal surgery	1, 7.14	7, 25	0.2328
Topic medicine	14, 100	24, 85.71	0.2829
Contact lenses	2, 14.29	1, 3.57	0.2537
Herpes virus infection	4, 28.57	4, 14.29	0.4064
Eye redness	6, 42.86	7, 25	0.298
Without ocular pain	10, 71.43	23, 82.14	0.4508
Visual acuity deficiency	11, 78.57	23, 82.14	0.9999
Foreign body sensation	6, 42.86	15, 53.57	0.7442
Constant tearing	4, 28.57	4, 14.29	0.4064

M,—mean, SD—standard deviation