It is either A or B because constructivism is building together
Depending on your tolerance to any type of drugs is how they will determine, your weight may be a factor but if you are still having pain after a certain amount of time they will up the dose of the medicine
I actually have that problem. I have 20/40 vision and my left eye is pretty much blind. I was prescribed glasses so that my sight in my left eye would not get worse. All to say, I would consider glasses to be necessary in this case. It definitely helps in every day life.
I hope this helps and have a great day!! :)