Blurry eyesight can be caused by many things. Some causes that are on my radar include:

• ​Diabetes
• ​Inflammation of the pituitary gland
• ​Glaucoma
• ​Eye strain from focusing on close objects
• ​Eye strain from insufficient sleep
• ​Eye strain from phone, tablet and PC screens
• ​Dehydration
• ​Poor circulation(Glaucoma)

There are definitely more causes but I am focusing on what I believe may be the cause of my blurry eyes.