This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': "Recesses of the angle of anterior chamber are best visualized by: March 2013 (h) \nSelect and explain. \nA. Keratometer, B. Tonometer, C. Gonioscope, D. Snellen's cha", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. C i.e. Gonioscope Tests/ procedures in ophthalmoscopy Direct ophthalmoscopy: - Image is viual & erect, - Magnified 15 times Indirect ophthalmoscopy: - Image is real & inveed; - Magnified 5 times; - It is done for examination of periphery of retina (upto orra serrata) Keratometry: Measures curvature of cornea Electronystatogram: Graph of movement of eye Anomoloscope: Detects colour blindness Retinoscopy: Objective assessment of refractive state of eye Gonioscopy: Measures angle of anterior chamber Tonometry: - Measures intraocular pressure; - Best is applanation tonometry Swinging flash test: Tests pupil Snellen cha tests: Vision Ishihara plates, Hardy Rand Rattler plates: Color vision Landolt's rings: Visual acuity in illiterates, children Macular function tests: - Card board test (2 point discrimination test); Amsler grid test; - Maddox rod test etc.", 'role': 'assistant'}]