This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Subject name: Ophthalmology
Corneal endothelial cell count is measured by - 
Select and explain. 
A. Specular microscope, B. Ophthalmoscope, C. Synoptophore, D. Amsler's grid
A: Specular microscope
Answer: A: Specular microscope 
Explanation: Ans. is 'a' i.e., Specular microscope o Corneal endothelium is examined with specular microscope, which allows a clear morphological study of endothelial cells including photographic documentation.o The cell density' of endothelium is around 3(MHI cells/mm2 in young adults, w hich decreases with advancing age.