What general effect does an improperly fitted contact lens have on a wearer?

An improperly fitted contact lens can lead to discomfort and reduced vision quality for the wearer due to several factors. First, a poor fit can cause the lens to shift on the surface of the eye, leading to irritation and a sensation of foreign body presence, which contributes to discomfort. Additionally, such a lens may not align optimally with the curvature and shape of the cornea, which can lead to blurriness or fluctuations in vision quality.

When a lens is not positioned correctly, it may also interfere with the natural tear film, leading to dryness and an increased risk of complications such as corneal abrasion or infections. As a result, the overall experience for the wearer is negatively impacted, ultimately affecting their ability to see clearly and comfortably while using contact lenses.

Hence, the consequences of an improper lens fit underscore the critical importance of appropriate fitting techniques and follow-up care in contact lens practice.