Ключевые слова: alphabet, background, blue, care, chart, check, clinic, composition, contact, copy, correction, diagnostic, different, doctor, exam, eye, eyeglasses, eyesight, eyewear, flat, frame, glasses, health, healthcare, hospital, illness, lay, lenses, letters, light, look, many, medicine, object, ophthalmic, ophthalmology, optical, optometry, read, see, sight, snellen, space, test, text, top, trial, tweezers, view, vision,