title: Low cost random access acuity projector.
mesh_terms: D003365:Costs and Cost Analysis; D006801:Humans; D010775:Photic Stimulation / Q000295:instrumentation; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000175:diagnosis; D014787:Vision Tests / Q000295:instrumentation; D014792:Visual Acuity