No. Vision screenings like the one performed for children in school or at optical-only stores only check for 20/20 vision. They do not check for the presence of sight-threatening eye diseases such as glaucoma, macular degeneration or cataracts. They also do not check for visual skill deficiencies such as problems with visual tracking or processing. Comprehensive eye exams are more thorough and use advanced equipment to evaluate your vision and eye health.