What is a common consequence of a flat fitting gas permeable lens?

A flat fitting gas permeable lens can lead to immediate corneal distortion. This occurs because if the lens does not adequately conform to the natural curvature of the cornea, it may not create the appropriate tear film reservoir that facilitates optimal lens alignment and movement. As a result, the lens can create uneven pressure across the corneal surface, leading to distortion in corneal shape, which can manifest as visual disturbances or discomfort for the wearer.

On the other hand, blurred distance vision can be caused by a variety of factors, such as incorrect lens power or misalignment but is not a direct result of the lens fitting being flat. Dry eye symptoms may arise from wearing any type of contact lenses but are not specifically linked to the fitting being flat. Lens dislocation is also a potential concern but typically relates more to lenses being too loose rather than flat fittings. Thus, immediate corneal distortion stands out as the most direct consequence of a flat fitting gas permeable lens.