Roca cape lighthouse in Portugal, West most point of Europe ( Cabo da Roca) Vertical. Roca cape lighthouse in Portugal, West most point of Europe ( Cabo da Roca) Vertical. The obelisk with a large white cross at Cabo da Roca. It is a cape which forms the westernmost extent of mainland Portugal and continental Europe.
[Read more about children's eye exams .]. 20/20 vision (or really, 20/20 visual acuity) is considered normal vision, meaning you can read at 20 feet a letter that most human beings should be able to read at 20 feet.
A HealthyWomen answered. Eye exams are done to test your vision and screen for glaucoma and macular degeneration, two common, often age-related conditions. Eye exams are recommended at least once between ages 20 to 29 and at least two exams between ages 30 and 39. At age 40, get a baseline eye disease screening.