If your astigmatism prescription is wrong, there are several signs and symptoms that can indicate a problem. The most noticeable symptom is that your vision is not as clear as it should be. You may notice that things appear blurry or distorted at certain distances, or that you are unable to focus on objects at a distance. Additionally, you may experience frequent headaches, eyestrain, or fatigue when trying to do activities which require near vision. It is also possible to experience eye irritation or dryness, or difficulty with night vision.
If you think your astigmatism prescription might be wrong, the best thing to do is to make an appointment with an eye doctor. They will perform a comprehensive eye exam to assess your vision and determine if your prescription needs to be adjusted. They may also check for signs of any other eye conditions which could be causing your issues. Based on the results of the exam, your eye doctor may recommend changing your prescription or trying different types of contact lenses or glasses.
In some cases, it may simply be a matter of adjusting to a new prescription, so it is important to give your eyes some time to adjust to any changes. However, if your vision does not improve after a few weeks, it is important to speak to your eye doctor as soon as possible to make sure that your prescription is correct.