Corneal higher order aberrations by Sirius topography and their relation to different refractive errors

BMC Ophthalmology

Table 2 Age distribution of patients in study groups

Study group	Age (mean ± SD)	Study group comparison	P value
Control	21.49 ± 2.33	Control / Myopia	0.188
Myopia	22.74 ± 3.70	Control / Astigmatism	0.041^*
Astigmatism	23.11 ± 5.46	Control / Hypermetropia	0.0001^*
Hypermetropia	25.27 ± 7.27	Myopia / Astigmatism	0.37
		Myopia / Hypermetropia	0.0001^*
		Astigmatism / Hypermetropia	0.005^*
		ANOVA	0.0001^*

SD standard deviations. ANOVA test was used to compare differences of means among the four groups. Student's t-test was used to compare the difference between means of each two samples
^*Reached statistical significance (P < 0.05)

ISSN: 1471-2415