system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following is best to study corneal endothelium?
assistant
The correct answer is  Ans. b (Specular microscopy). (Ref. Parson Diseases of Eye, 19th ed., 113)SPECULAR MICROSCOPY# It is vital to count and study morphology of corneal endothelial cells, especially in the cases of cataract with suspected endothelial dystrophy.# Normal cell count is 2000-2500 cells/mm2.# IOL implantation is contraindicated if the cell count is < 1500/mm2.# Specular reflection by slit lamp biomicroscope (specular microscopy) allows visualization of corneal endothelium by viewing light reflected back from this interface, count of endothelial cells is possible using an Elser grid.