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The test used to measure pressure inside the eye is

  1. Slit lamp exam

  2. Tonometry

  3. Visual field testing

  4. Ophthalmoscopy

The correct answer is: Tonometry

Tonometry is the correct answer because it is the test specifically used to measure the pressure inside the eye. This test is crucial in diagnosing and managing conditions such as glaucoma, where increased intraocular pressure can damage the optic nerve and lead to vision loss. The other options are incorrect: A. Slit lamp exam: This is a different type of test used to examine the eye's external and internal structures under magnification, not to measure intraocular pressure. C. Visual field testing: This test is used to assess a person's peripheral vision and detect any defects or abnormalities in the visual field. D. Ophthalmoscopy: This is a procedure where the doctor examines the back of the eye (retina, optic nerve, blood vessels) using an ophthalmoscope. It helps in evaluating the health of the eye but does not measure intraocular pressure.