In what part of an eye examination would a detailed assessment of the optic nerve occur?

During a fundus examination, a detailed assessment of the optic nerve takes place. This procedure involves using special instruments, like an ophthalmoscope, to look at the back of the eye, where the optic nerve is located. The optic nerve head, or disc, is carefully assessed for any abnormalities such as swelling, pallor, or irregular shapes, which can be indicative of various eye conditions like glaucoma or optic neuritis.

The fundus examination provides critical information about the overall health of the retina and the optic nerve, enabling the eye care provider to diagnose conditions that may impact sight or signal systemic diseases. Other examination components, such as the visual field test, refraction, and tonometry, focus on different aspects of vision and eye function rather than directly examining the optic nerve.