What is a disadvantage of contact lenses?

Corneal irritation due to dust is a notable disadvantage of contact lenses. When wearing contacts, the lenses can trap dust and debris against the surface of the eye, leading to irritation and discomfort. This irritation can manifest in several ways, including redness, dryness, and an increased risk of infection if the lenses are not properly cared for. Maintaining lens hygiene and avoiding environments with high dust exposure can help mitigate these effects, but they remain a significant consideration for contact lens wearers.

Other options may present characteristics of contact lenses, such as being low-cost or suitable for sports, but they don't capture the essence of the physical discomfort that can arise from lens use. Additionally, while contact lenses can be dislodged during activities, this is less of a disadvantage for the user compared to the direct physical effects on the eye caused by dust and other irritants.