Certified Ophthalmic Technician (COT) Test 2025 – 400 Free Practice Questions to Pass the Exam

Intraocular pressure is specifically measured using a tonometer. This instrument is designed to assess the pressure within the eye, which is crucial for diagnosing and managing conditions such as glaucoma. Tonometers can utilize different techniques, including applanation, indentation, and rebound tonometry, to obtain accurate readings of intraocular pressure.

The other instruments listed serve different purposes in ophthalmology. An ophthalmoscope is used for examining the interior of the eye, including the retina and optic nerve, but it does not measure intraocular pressure. A slit lamp provides a magnified view of the anterior segment of the eye, allowing the technician to examine various structures, yet it does not directly measure pressure. A retinoscope is employed for assessing refraction and determining prescription needs but is not designed for pressure measurements within the eye. Understanding the specific use of each tool is essential for effective diagnosis and treatment in the field of ophthalmology.