Tullahoma, Tenn. – October 06, 2026 -- Patients who still struggle with blurry vision despite wearing the correct eyeglass or contact lens prescription may be dealing with a tear film problem rather than a refractive one, according to insights from Dr. J. Shawn McBride, an eye health expert at Vision Source Tullahoma Vision Associates.

The explanation, published by HelloNation, centers on a detail many patients overlook: clear vision depends as much on tear quality and function as it does on corrective lenses.