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.
Distance vision test for adults. This test will measure your distance vision in each eye. Before you take this test, you should know the difference between an eye check or test and an eye exam done by an eye doctor. This test does NOT replace regular eye exams. What you will need: âº What you will need: â¼. 1  a well-lit room a minimum of 10 feet long.