Do you think I may have an infection or a irritation of my left eye? Will my vision return to normal in my left eye? (Photos)

You need an ophthalmologist who is more motivated to get to the bottom of your symptoms.  I think it is time to make the drive to the big city and see a general ophthalmologist at the University of Colorado for a real assessment.  Please let us know what you learn.

Since the double vision started a couple of months after your blepharoplasty, I do not think they are related which means that you need to probably consult with another ophthalmologist in order to figure out what's going on. In terms of the eye irritation, it is probably a reaction to the eye drops that the doctor gave you for the dry eye. So sorry that you are experiencing this.Kindly,Kouros Azar

True double vision is concerning.  Blurred vision would likely be from dry eyes as your ophthalmologist thought.    You could try Alaway or Zaditor drops for the itching, but they may cause your eyes to become more dry.  The best drops are preservative-free, so check the package/bottle information of the drops you are using.  Benadryl cream may help for the itching, but don't get it into the eye.  If your double vision worsens and your ophthalmologist can't figure it out then get seen for another opinion.  Without further details of your health or and particular surgery details then it is hard to give any further thoughts or recommendations.  Best regards.  

Best to recheck with your eye doctor regarding your blurred and double vision.And keep up the lubricants to your eyes.