Web page 423 from "A treatise on the attention, the manner and phaenomena of vision" by William Porterfield, Published 1759 in Edinburgh. With this reserve the word "optometer" seems for The very first time. Optometric heritage is tied to the event of[citation wanted]עשרות אלפי עסקים וארגונים משתמשים במוצרי ושי