This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Ophthalmology
Keratometry is done to assess: 
Select and explain. 
A. Corneal sensation, B. Corneal endothelium, C. Corneal thickness, D. Curvature of cornea
D: Curvature of cornea
Answer: D: Curvature of cornea 
Explanation: Keratometry measures the curvature of cornea e.g. Placido's disc, Orb Scan, Pentacam Placido's Disc Aesthesiometer is used to measure corneal sensation Specular microscopy is used for corneal endothelium - count and morphology of endothelial cells Pachymeter is used for measuring corneal thickness.