What is the name of the instrument used to measure the thickness of the cornea and the depth of the anterior chamber?

The instrument used to measure the thickness of the cornea and the depth of the anterior chamber is called a pachymeter. This device is essential in ophthalmology, particularly in the assessment of conditions like glaucoma, where corneal thickness can influence intraocular pressure readings and the overall health of the eye. The pachymeter provides direct measurements that are crucial for diagnosing and managing various eye conditions effectively.

A lensmeter is used to measure the prescription of spectacles and contact lenses, while a keratometer measures the curvature of the cornea, not its thickness. A phoropter is used during vision exams to determine an individual's refractive error and the appropriate corrective lenses needed. Thus, the pachymeter is uniquely suited for evaluating corneal and anterior chamber dimensions.