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. 2019 Feb 7;10:1–6. doi: 10.2147/AHMT.S196573

Table 3.

Knowledge of adolescents about CCLs (N=392)

Knowledge true/false statements Percentage of incorrect answer
CCL user (n=53) Non-CCL user (n=339)

• CCLs are one-size fits all. 38 (71.7) 240 (72.1)

• It is okay to share CCL. 3 (5.7) 56 (16.6)

• There are no risks associated with using CCL. 16 (30.8) 142 (42.5)

• Selling CCL over-the-counter is illegal. 47 (88.7) 278 (82.7)

• CCLs are monitored by the FDA, the same as contact that correct vision. 49 (94.2) 295 (88.9)

• Buying CCL without a prescription does not increase your risk of permanent eye damage. 28 (52.8) 203 (60.8)

• If someone sells you CCL without asking to see your prescription first, they are breaking the law. 45 (84.9) 251 (74.9)

• “Circle” lenses (a.k.a “Anime” contacts) have not been approved by the FDA. 44 (84.6) 308 (92.2)

• Parasites can stick to CCL and can burrow into your eye. 30 (56.6) 214(64.3)

Total knowledge score: mean/SD = (3.28/1.52)a 3.2 (1.6) 3.0 (1.8)

 Low [0, 2] 17 (32.1) 131 (38.8)
 Medium [3, 4] 24 (45.3) 137 (40.5)
 High [5, 9] 12 (22.6) 70 (20.7)

Note:

a

One-way ANOVA P-value: 0.32, Kruskal–Wallis: 0.27.

Abbreviations: CCL, cosmetic contact lenses; FDA, Food and Drug Administration.