Trust by optometrists, enthusiasts, and educators for eye testing accuracy in clinics, workshops, or electrical engineering tasks Lightweight design seamlessly fit over eyewears frame, providing a comfortable and hygienic barrier during optical assessments for views screening in clinical setting, school health programs, or personals projects requiring controlled monocular occlusion This eye exam accessory as a practical tool for electrical hobbyists, combining accurate functionality, easy to clean materials Optometry Occluder ensures precise views testing with its wear resistant construction, ideal for frequent use in professional eye exams and electrical projects, Manufacturer: ERRORY