The document discusses eye health and common vision problems in children and seniors. It notes that 75% of blindness is preventable or treatable and vision problems affect nearly 13.5 million U.S. children. Common childhood vision issues include nearsightedness, farsightedness, astigmatism, strabismus, and amblyopia. Early detection is important to prevent learning issues or permanent vision loss. Common senior vision conditions include presbyopia, cataracts, dry eye, glaucoma, and age-related macular degeneration. Worldwide, someone goes blind every 5 seconds and 80% of blindness is preventable, with developing nations having far less access to eye care.