This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
Standard in perimetry is 
Select and explain. 
A. Goldman type I, B. Goldman type II, C. Goldman type III, D. Goldman type IV
C: Goldman type III
Answer: C: Goldman type III 
Explanation: Goldmann's perimeter: It consists of a hemispherical dome. Its main advantage over the tangent screen is that the test conditions and the intensity of the target are always the same. It permits greater reproducibility, Goldmann perimeter stimuli I through V. Unless otherwise instructed, the equivalent to Goldmann size III (4 mm2) white target. Reference : AK KHURANA COMPREHENSIVE OPHTHALMOLOGY, Edition4, Page-483,484