title: A technique for testing visual function in the presence of opacities.
mesh_terms: D002386:Cataract; D003318:Corneal Opacity; D005069:Evaluation Studies as Topic; D006801:Humans; D007834:Lasers; D010775:Photic Stimulation; D010969:Plastics; D012160:Retina / Q000502:physiology; D014787:Vision Tests; D014792:Visual Acuity
chemical_list: D010969:Plastics