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.
The other rows contain letters that are progressively smaller. During an eye exam, your eye doctor will ask you to find the smallest line of text letters that you can make out, and ask you to read it. If you can read the bottom row of letters, your visual acuity is very good.
The following basic vision tests help to assess how well your eyes are functioning and to detect potential vision disorders. They are ordinarily included as part of a full eye examination. Techniques vary depending on whether you are a new or returning patient to the eye practitioner. Visual acuity tests help to evaluate your ability to distinguish the form and detail of an object or printed figure.