In agreement with Reality Check,I believe you currently have a very low prescription.But that may change,given time.If you are now 11 years old or younger,you could have an eye grade of more than -3.0 and a higher amount of astigmatism once eye stops growing. As for now,I think you should get glasses,as one eye is at least -0.75.But you currently do not need glasses,other than to see things further away,say, beyond about 1.3 meters.