rosenbaum pocket vision screener eye test blurred chart medical with numbers. line sketch outline

rosenbaum pocket vision screener ophthalmologist orthoptist optometrist scientist chart optotype test eye eyesight sight check exam ophthalmology vector optician letter optometry visual examination alphabet glasses doctor table medical optical background health read measure sign view focus myopia see glaucoma blind poster white ophthalmic eyeglass text care look acuity symbol graphic