The Tono-Pen is a handheld device thatâs shaped like a large marker. It provides a digital readout of eye pressure. Your doctor can use it to touch your eye and measure pressure. Though useful in many cases, the Tono-Pen is considered less accurate than the Goldmann tonometer in people with normal corneas.
The English language has two types: British English and American English. Other variations such as Oxford English, Standard English, or other variants are mere adaptations of the two types (especially for consistency or reference use, e.g., in media or publication). British English.
For example, French and Spanish both come from Latin. Most words are said a little differently in Spanish and French, so the two are called different languages. Most languages belong to a language family, but some languages do not. These languages are called Language isolates. There also are Constructed languages, like for example Esperanto. Constructed languages are made for different reasons: making a 'world language', for fun, for use in fiction, etc.