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Does fainting cause permanent blurred vision episodes?

I fainted for the first time in my life after receiving a needle while getting cavities filled. i had severe blurred vision for the next days and went the hospital for it where they found nothing wrong but found gallstone which i dont think would cause vision blurriness. My vision is blurry usually during the morning and i get dizzy standing up sometimes and it goes away after awhile and comes back they did blood pressure tests and diabetes test and said nothing was bad what is wrong? i am male 21 years old please help!
It sounds like you have a vasovagal reaction when getting a procedure done at the dentist office. A vasovagal reaction is when there is a strong stimulus such as pain, leading to syncope, which is fainting. You mention that you have blurry vision in the morning and also sometimes you get dizzy when standing. Vision could be blurry when you have orthostatic hypotension which is low blood pressures to the brain when you are getting up from a sitting or laying position. It sounds like you have your blood pressure measured and your glucose checked already. You didn't mention how long you have had this blurry vision for but the initial vasovagal reaction would not cause you to have permanent blurry vision. You should make an appointment with an optometrist or ophthalmologist to have your vision checked. They could do more tests that is specific to the eyes that a medical office cannot perform. You should also follow up with your primary care doctor to let them know that your blurry vision is still present and to see if he/she wants to perform more tests or other lab work. In the meantime, you should not drive a car. Again, please speak with an optometrist or ophthalmologist.
This answer is for general informational purposes only and is not a substitute for professional medical advice.
If you think you may have a medical emergency, call your doctor or (in the United States) 911 immediately. Always seek the advice of your doctor before starting or changing treatment. Medical professionals who provide responses to health-related questions are intended third party beneficiaries with certain rights under Zocdoc’s Terms of Service.

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