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
[{'content': 'Standard in perimetry is \nSelect and explain. \nA. Goldman type I, B. Goldman type II, C. Goldman type III, D. Goldman type IV', 'role': 'user'}, {'content': "Answer: C \nExplanation: 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", 'role': 'assistant'}]