Blurry Left Eye Vision. Please suggest.

My left vision is  a bit Blurr , I can see everything when I wake in morning and slow slowly till evening it goes a bit blurr , Right eye is perfectly fine. I consulted 2-3 opthalmologist they told everything is fine and its just dry eyes and given me Genteal and Lacrygel . i worked on Computer for 7-8 hours . I use Genteal Eye drop and Lacrygel lubricant a 3 times a day as suggested by Doctor in both eyes. On using it for a month or 2 month i get a lot of releif and once I stop using this within 3-4 months I get again this vision issue. Most of time I face this problem in winters Because of this Vision Issue , I get light reflection issue in night while driving . I am using Driving  specs while driving , also Blue Ray glasses while working on laptop or seeing mobile Instead of all this getting this issue frequently Please suggest.