Teacher:Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).
Teacher: Now, understand the problem? Solve this instance: Abstract: A modification of Patterson's external antro-ethmoidectomy operation is described which provides a more direct and simpler approach than the transantral operation for decompression of the orbit. 
 Which is the apt title for the abstract? option1: The Patterson operation for decompression of the orbit. option2: Infectivity of Leishmania braziliensis promastigotes is dependent on the increasing expression of a 65,000-dalton surface antigen.
Student:
The Patterson operation for decompression of the orbit.