It's unlikely that you'll go blind from getting the Jalapeno Juice in your eye as long as you get the Jalapeno Juice out of your eye in a timely manner.
To get Jalapeno Juice out of your eye wash your hands first with soap and water and then dip your fingers into some milk.
After doing that grab a paper towel and dip it into some milk as well and then wipe the Jalapeno Juice out with the milk.
The enzymes in the milk will help stop the burning sensation of the Jalapeno Juice.
This works for other hot things as well such as hot sauce or other peppers or spices that get into your eye.