Why do sometimes we get double vision?
Why do I have double vision?
I'm having short sight with lens power -1.75 both eyes. How can I compare it with 6/6 vision? What does it mean to have 20/30 vision? What are major problems in computer vision? What does it mean to have 20/15 vision? The doctor told me that I am short-sighted in one eye only, and the other eye is perfect. How can this be? How should one obtain a perfect 6/6 vision? For as long as I can remember I have had almost no peripheral vision. Is this something to tell my eye doctor about? What is 20/25 vision? What does it mean? Is it better or worse than 20/20 vision?  Why can people be both near-sighted and far-sighted simultaneously? What is the reason why one eye is bigger than the other? I have eye sight -4 how can I make my vision clear? What's wrong with my eyes? What is the difference between vision and illusion? When I stand up too fast or step outside at day I have a wave of dizziness and dots flashing across my vision, why is this? Is there a point at which your vision is so bad that you can't wear contacts? What's wrong with my eye? How is Vision able to fly? What are the major open problems in computer vision? I have a eyesight of -4 in each eye how can I recover my vision back to normal? Why does my vision go black and I get really dizzy every time I stand up? I've started getting this strange thing. When I stand up from sitting down or getting out of bed, my vision goes black and I get a sudden headache for about 2 minutes. Why is this? What does it mean to have 20/180 vision? Is 20/150 vision bad? What could be wrong with my eye? I have eye sight of 0.75 how can I recover my vision back to normal.? Why do people who wear regular spectacles get dark circles around their eyes? What did people with terrible vision do before the invention of glasses? Vision (eyesight): How many frames per second do humans see? What does 20/20 vision mean? I have eye sight of -0.75 and using glasses so how can I improve my vision to normal?