Corneal endothelial cell count is measured by

Corneal endothelium is examined with a specular microscope, Which allows a clear morphological study of endothelial cells including photographic documentation The cell density of endothelium is around 3000 cells/mm2 in young adults, which decreases with advancing age. Image : Specular microscopy Reference : AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 95 - 96