Whether or not you should wear glasses while studying depends on a few factors. First, you should determine if you need glasses to aid your vision. If you are nearsighted and need glasses to see the words on the page then wearing glasses while studying is a good idea. On the other hand, if you don't need glasses to see the words on the page then wearing glasses might not be necessary.
In addition to your vision needs, you should also consider your comfort level while studying. If you find that you are more comfortable and better able to concentrate when wearing glasses, then go ahead and wear them. However, if you find that wearing glasses inhibits your concentration or makes you feel uncomfortable, then it might be best to take them off while studying.
Finally, you should consider the type of glasses you are wearing. If you are wearing glasses that are tinted or have a reflective coating, then you should take them off while studying as the tint or coating can cause glare and make it difficult to read words on the page.
Ultimately, it is up to you to decide whether or not you should wear glasses while studying. Consider your vision needs, comfort level, and type of glasses you are wearing when making this decision.