Adverse effects due to contact lens wear can be acute or chronic in nature and can span the range from a mere annoyance to a disabling condition that results in permanent ocular damage or loss of the eye in general contact lens complications are the result of one or more of the following factors. Some of the possible serious hazards of wearing contact lenses are corneal ulcers eye infections and even blindness corneal ulcers are open sores in the outer layer of the cornea they are. 8 risks and side effects of using contact lenses 1 blockage of oxygen supply to the eyes since contact lenses lie directly on the eye and cover the entire cornea the 2 dry eyes contact lens reduces the quantity of tears getting on the cornea as they absorb most of our tears to keep 3 . Adverse effects of contact lenses a brief review brien a holden i introduction my task today is to briefly review the effects of contact lenses on the corneal epithelium the stroma the endo thelium and the eye lids and in particular the effects of chronic hypoxia inflammation and infection