Which intervention can help protect the eye of a patient with Bell's Palsy during sleep?

Covering the eye is an effective intervention to protect the eye of a patient with Bell's Palsy during sleep because the condition can cause weakness or paralysis of the facial muscles, including those responsible for blinking. This can lead to incomplete closure of the eyelid, resulting in exposure of the ocular surface, dryness, and potential damage to the cornea.

By covering the eye, the eyelid can be shielded from environmental factors like air irritation and drying out, as well as providing a physical barrier against potential injury. This is particularly important at night when the patient may not be consciously aware of keeping the eye closed.

While other options, like eye drops, wearing a bandage, or using a sleeping mask, can also play a role in eye care, covering the eye directly offers the most immediate and straightforward protection against the complications associated with Bell's Palsy.