if the diagnosis is dry eye, your veterinarian may surgically move the duct from the parotid salivary gland to the eye, in which case the saliva will then compensate for the lack of tears, providing the needed moisture.

Make this proper case.
If the diagnosis is dry eye, your veterinarian may surgically move the duct from the parotid salivary gland to the eye, in which case the saliva will then compensate for the lack of tears, providing the needed moisture.