Why do I get sharp pains in my eye as if a needle has gone into it then it goes bloodshot?
The likeliest cause is that a greater number than normal of cells from the cornea have sloughed off suddenly, and because your cornea is very sensitive you get a sharp pain. The front surface of your cornea is continually replacing cells for those that have come off just like skin cells. Sometimes a larger group of them comes off due usually to your cornea being dry. It often happens more at night or when you wake up in the morning. The treatment is to use lubricating eye drops (artificial tears) that you can buy over the counter or from your optician, and put them in frequently particularly at night and just before you go to bed. You might need to use them for a number of weeks depending on your symptoms. If your eye is otherwise red, gritty, sensitive to light or the vision is affected you may have an eye infection and should see your optometrist or GP.