How should the condition of the eyes be assessed during a head and neck examination according to the chapter?

During a head and neck examination, the eyes should be assessed by inspecting the position and symmetry of the surrounding skin and tissues, and the position of the eyebrows and eyelashes. Visual acuity should be screened using a Snellen chart or a handheld chart. The condition of the skin around the eyes, the sclera, and the color of the conjunctiva should be noted. The lids should be examined for any abnormalities, and the cornea should be checked for scarring or opacities. Extraocular motions, visual fields, corneal reflexes, and pupillary reactions should also be assessed.

The assessment of the eyes during a head and neck examination involves several steps. First, inspect the position and symmetry of the surrounding skin and tissues, as well as the position of the eyebrows and eyelashes. Visual acuity should be screened using a Snellen chart from 20 feet or a handheld chart from about 12 inches, with the patient wearing corrective lenses if needed. Note the condition of the skin around the eyes, check the sclera, and observe the color of the conjunctiva. Look for any signs of exophthalmos, xanthelasma, pinguecula, ptosis, edema, or skin lesions. Examine the eyelids for hordeolum, chalazion, ectropion, and entropion. The cornea should be checked for scarring, pterygium, corneal arcus, and opacities. Palpate the lacrimal gland for tenderness and assess the patency of the lacrimal duct. Evaluate extraocular motions (cranial nerves III, IV, and VI), visual fields (cranial nerve II), corneal reflexes (cranial nerve V), and pupillary reactions (cranial nerves II and III) with direct and consensual reactions. A funduscopic examination is also recommended, often requiring dilation for elderly patients, to assess the fundus for any abnormalities.