On account of the importance of Jurisprudence in the field of law, it is called, "The eye of law." According to Harald .J. Lasky, Jurisprudence is the eye of law, Jurisprudence is like an eye. It is compared with the eye. The eyes are one of the most important parts of the human body, without eyes we can neither see nor do something. This is the reason, that jurisprudence is the Eye of the law because Jurisprudence functions for law in the same manner as the eyes do in the human body. For example - the interpretation of law is a very difficult task, it cannot be done without the help of Jurisprudence.
'PATON' in this connection says Jurisprudence is a particular method of study, not the law of one particular county but of the general notions of law itself. Whenever any complicated problems regarding the law like:
- How and when the law developed
- What is its object
- Whether the law was made by people or it was due to the inspiration of some divine force
- Whether the law is a command of a sovereign or it is a result of the gradual development of civilization in society.
The main function of Jurisprudence is to study the origin of law, its development, and its contribution to society. The matters of birth, marriage, death, succession, etc. are equally controlled through laws. It is a well-known saying that, ignorance of law is no excuse." hence it is essential to know the correct basic principles of law which are contained only in the Jurisprudence.
Law is also connected with civil life. A person who obeys the law is known as a civilized citizen. A person who does not obey the law is punished. All people must have a sound knowledge of the law which is possible only with the help of Jurisprudence. Therefore, Jurisprudence, having so much importance for society, has rightly been called the eye of the law.