<prompt> What is the investigation going on in Ophthalmology examinationPachymetryTonometryBiometryLASER interferometry  <response>: Goldmann Applanation tonometry Gold standard. Based on Imbe Fick law. If cornea is thinner than reading is falsely low. If cornea is thicker, it is falsely high. Applanation tonometry Other Options Pachymetry: Corneal thickness Biometry: Calculation of Power of IOL to be implanted after cataract surgery LASER interferometry: used to detect the maximum visual potential of the eye 