Fatigue can be a warning sign for you to slow down and check if you have an underlying medical issue. Also, many medical conditions associated with headaches and blurred vision and fatigue can lead to risks. You may look for an immediate treatment like vision correction procedures to avoid your blurred vision disrupting your everyday tasks. Taking a break to relieve stress and migraines can also stabilize your vision. If you are unsure about your medical status, you may visit a primary care physician to give you a general checkup.