Contact lenses are a frequent therapeutic option for correction of refractive eye anomalies. The last few decades have seen important technological and medical advancements in manufacturing and application of contact lenses, from rigid oxygen non-permeable contact lenses, to rigid oxygen permeable contact lenses, to soft contact lenses and soft silicone hydrogel contact lenses. In comparison with glasses, these very sophisticated medical devices provide better visual quality and wider visual field. However, contact lenses also have some disadvantages and carry some risks, primarily the risk of infection, if they are not cleaned properly. These are the reasons why the choice of contact lenses for each patient should be left to an experienced ophthalmologist – contactologist.

Key words:
contact lenses; contact lenses, hydrophilic; refractive errors; risk factors