| Sumario: | Patients often present with symptoms that typically fall under the heading of pathology. Complaints of dry eye, blepharitis, apparent allergic reactions, and the like are usually treated medically with drops, ointments, punctual plugs, etc. The percentage of such cases in which these signs and symptoms are of a functional nature is unknown. Visual stress and functional deficits - eye movement, binocular, and/or accommodative type issues - can result in all the typical signs and symptoms with which we are familiar. Patients respond very well to proper lens therapy and active vision therapy when this is the case. We should be aware that many conditions appearing on the surface to be simply physiological in nature may in fact be the result of functional vision deficits. These often respond to non-invasive treatment, with the added benefit of all the improvement in visual function and comfort that emerge from proper lenses and vision therapy.
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