I’ve worn glasses for nearsightedness since I was eight or nine. I went through a few years of contacts in my teens, but had a bad reaction to some kind of lens solution, and had to go back to glasses. I got my first pair of bifocals a couple of years ago, sometime around my 40th birthday. The top half is for distance, and the bottom half is for reading/cross-stitch. In retrospect, though, I probably should have looked into trifocals, so that I have something for the computer monitor, but the stupid eye doctor (I really don’t trust optometrists, but I just wanted glasses with no surgery and the office was close) insisted I didn’t even need bifocals. He claimed I was “much too young” to need them, and didn’t seem to hear me say that my eyes were in physical pain when I had to switch back and forth between near and far all the time.
I picked up the bifocals on a Friday, and tried to wear them all weekend. “Tried to” is the key word there. Having worn glasses on a daily basis for more than 30 years, the experience of glasses was not new to me in the least. However, I couldn’t see anything, close up or far away, regardless of how I tilted my head. I also had a constant headache, which was cured only by going back to my single-vision glasses and pulling them off whenever I needed to see something close at hand.
Monday afternoon, I went in to see the optician at the same office. The optician at this place is the best optician I have ever known, which is one reason I go there for glasses even with no MDs on staff. He checked my records, checked the glasses, and went back and huddled with the optometrist. He came back and told me that the doctor had written the wrong prescription, with virtually no correction for the close-up half, but that they were going to do another vision test and replace the lenses, on the house. I picked up the glasses the next day, had the optician adjust the angle, and I’ve been wearing them well ever since.
My advice: While it is not unusual to need some adjustment period with any new pair of glasses, if you continue to have problems after a day or two, go visit the optician where you got the glasses. I have found that optometrists know about as much about glasses as doctors know about medicine–lots of theory, with noso much practical experience. On the other hand, the opticians are trained primarily in lens technology, much like a pharmacist is trained in drugs, and are more likely to recognize existing problems, especially with new lenses.