Hello, Thank you for the query and welcome to Healthcaremagic! To help you out further i will need some more information regarding your health like since when are you having this complaint? any complaint of redness/itching in this eye? by lazy eye do you mean difficulty in seeing or looking droppy?Are you on any medicines for any reason? any complaints of brief difficulty in seeing/ dropping of your smile on left side, less sensation on left side of face? If you have any of the other complaints that i mentioned above then its a good idea to get checked by a local neurologist to find out if related to a brain issue. If there has been a sudden eye number change then its best to get examine d by a local eye doctor. Astigmatism is a very common condition which reflects the difference in the surface of your eye cornea. Watering of eye can reflect issue related to eye( irritation due to dust, allergy,makeup, eye medicine, eye infection), related to brain. Hope this cleared your query, takecare!