Eye occluder and astigmatism test patch designed for universal use across all age groups. Suitable for preschool and kindergarten children, school age and adolescents, adults, and the elderly. Intended for use at home, in school vision screenings, and in clinical settings. Key benefits Reliable occlusion for vision screening and basic eye tests, helping practitioners and caregivers perform consistent assessments. Universal fit accommodates a wide range of face sizes and ages, reducing the need for multiple sizes. Easy to apply and remove, which simplifies testing for children and adults and helps maintain patient comfort. Compact and portable, convenient for use in family settings, school screening programs, and hospitals. Function and compatibility Primary function is to occlude one eye during vision tests and to serve as an astigmatism test patch for basic screening procedures. Compatible with routine vision screenings in educational institutions and with standard clinic examination workflows. Suitable for use by caregivers, school nurses, optometry technicians, and other nonspecialist personnel conducting preliminary screening. Attributes Universal size and design to suit different age groups and face shapes. Designed for comfortable wear during short to moderate testing periods. Stable fit to minimize movement during tests and improve repeatability of simple assessments. Use scenarios 1) School screening: A nurse or screening team uses the occluder to cover one eye while conducting visual acuity and astigmatism checks for a classroom of children. 2) Clinic exam: An optometry technician applies the patch during routine eye exams to isolate each eye for comparison and preliminary astigmatism screening. 3) Home screening: Parents use the occluder to perform basic vision checks before arranging a formal eye examination. Practical points Keep patches clean and store in a dry place between uses. Designed for quick application and removal to reduce stress during testing. Use as part of routine screening and referral processes; follow professional guidance for diagnosis and treatment decisions.