This research found chronic pain derived from dry eye disease can be permanent. This is an exert from a pre-publication titled "Neuropathic Ocular Pain: An Important Yet Underevaluated Feature of Dry Eye by Galor A, Levitt RC, Felix ER, Martin ER, Sarantopoulos CD. Eye (Lond). 2014 Nov 7. http://Nauka-Avto.ru/bitrix/redirect.php?goto=https://WWW.Opticaljournal.com/chronic-eye-pain-from-dry-eye-syndrome-can-be-permanent/