A contact lens that is too tight is likely to cause what issue?

A contact lens that is too tight can cause limbal compression because it exerts excessive pressure on the limbal area of the eye, which is the border region where the cornea meets the sclera (the white part of the eye). This compression can restrict the blood supply and lead to irritation or discomfort, as well as potential long-term issues such as corneal hypoxia (lack of oxygen).

When a lens does not fit properly and is too tight, it can disrupt the normal physiological processes of the eye, leading to complications that may affect overall eye health. Properly fitting contact lenses should allow for sufficient movement and resources to the cornea and should not compromise the delicate structures of the eye.