Cherry eye is caused by the prolapse of the tear gland from its normal position in the eyelid, and it is a structural issue that typically does not resolve on its own. The prolapsed gland will not return to its normal position without surgical intervention, and it will continue to be visible as a red, swollen mass in the eye. In some cases, the condition may not be causing any discomfort or pain, and the vet may choose to monitor it instead of treating it surgically. However, if the eye is painful or if there is a risk of infection, surgery will typically be recommended to reposition the gland back into its normal position.