BACKGROUND: Extra-Care soft contact lenses are made of hydrogel, and their water content, oxygen permeability coefficient and refractive index have reached national standards.
OBJECTIVE: To evaluate the effectiveness and safety of Extra-Care soft contact lenses compared with TB soft contact lenses.
METHODS: Totally 135 volunteers were enrolled in this trial, and randomly divided into trial group treated with Extra-Care soft contact lenses and control group treated with TB soft contact lenses. Subjective symptoms, visual clarity, stability of visual acuity, lens comfort, lens positioning, lens covering, foreign body sensation, corneal punctate staining, limbal hyperemia and tear breakup time were evaluated immediately, 7 days, 30 days and 90 days after wearing.
RESULTS AND CONCLUSION: There were no significant differences in the visual clarity, stability of visual acuity, lens positioning, lens covering, foreign body sensation, corneal punctate staining, limbal hyperemia and tear film breakup time between the two groups. However, the lens comfort in the trial group was superior to that in the control group (P < 0.05). The results indicated that Extra-Care soft contact lenses are effective and safe, improving lens comfort.