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.
Analysis of Language. Linguists divide the study of spoken language into two categories--phonology and grammar. Phonology is the study of sounds. Grammar is how the sounds are used to make sense. Phonology. The smallest unit of sound that can be altered to change the meaning of a word is called a phoneme. In English, for example, the words gin, kin, pin, sin, tin, and win all have different meaning due to the fact that the initial sound, or phoneme, is different.