Comparing Deposit Formation Between Opaque And Visibility Tint Soft Contact Lenses.

It has been previously noted that opaque tint soft contact lenses cause slight discomfort when compared to clear lenses. One theory to explain this is that the dot matrix on the anterior surface of the opaque lens may facilitate deposit formation, thus decreasing comfort. A comparison study was done between opaque and visibility tint soft contact lenses to evaluate deposit formation differences. Using ten subjects, each as his/her own control, biomicroscopy was performed after two weeks of lens wear, using Wesley Jessen FreshLook Colors and LiteTint disposable lenses. Subjective ratings on comfort were also collected. At the conclusion of the study, it was found that the opaque tint lenses had a lower tendency to deposit than did the visibilitiy tint lenses. Therefore, no significant correlation was found between the presence of the dot matrix and deposit formation. However, the study did reveal a slight difference in subjective comfort of the lenses, with the visibility tint lens being more comfortable. Further studies in this area using a larger subject sample and more elaborate examination techniques might be indicated.