Table 1.

Demographic data

Characteristic	n (%)
Age in years, mean ± SD [Range], median (IQR)	21.5 ± 1.9 (18–29), 21 (20–33)
Gender
Male	124 (41.3)
Female	176 (58.7)
Ocular diseases
Nearsightedness (myopia)	111 (37.0)
Astigmatism	41 (13.7)
Farsightedness (hyperopia)	22 (7.3)
Vision corrective surgery within the last 6 months; like LASIK	1 (0.3)
None	164 (54.7)
Artificial tears use
Yes	132 (44)
Corrective lens use
Yes	161 (53.7)
Type of corrective lens (n = 161)
Eye glasses	151 (93.8)
Contact lens	10 (6.2)