Does Diabetes impact your eyeglass prescription?

By Antique-Dave Latest Reply 2009-04-03 09:01:45 -0500
Started 2009-03-30 13:16:42 -0500

I was diagnosed on the 18th of March with T2 Diabetes. My Glucose was 238, A1c was 10.1 and BP was 160/104.

I just got a new set of glasses in February from an eye exam that was done last fall. The big change was I needed Trifocals but opted for Bifocals with an additional set as task glasses with the trifocal script.

I had them for a month before my diagnosis and really liked them but I'm finding now that they are just not working right for me. I had previously experienced some blurry vision this winter, that is not what is happening now. my vision for the distance is what has changed the most.

I've been making changes in my diet since the day I was diagnosed, I've had friends who died because they did not take their diabetes seriously, (thats not going to be me) my GP prescribed 2 oral meds for the diabetes and an ACE inhibitor on the 23rd of March.

Last night my BP was 117/77 I don't have a meter yet, my GP said not to get one just yet, he wants me back in April to see him.

I'm wondering if I should have another eye exam done.

12 replies

Petrea 2009-04-01 01:28:45 -0500 Report

Yes, your bs will impact your glasses prescription. That happened to me several years ago when I received my new glasses after an exam. I went back to the optician that fitted the glasses to me & he indicated that the lenses were exactly as prescribed by the dr. When I called the drs. office & stated my problem they asked me if I was a diabetic. I told them I was & they said to bring my log book with me with my blood sugars. The dr. found the date of my exam and then we looked back I think about 3 mos. worth & then compared the numbers to the day that I was there. Anyway, it all came down to the blood sugars. He did another exam (did not charge me) & gave me another prescription that worked. So yes, make sure your dr. knows your medical history & that you are a diabetic.

Antique-Dave 2009-04-01 10:23:01 -0500 Report

When I had the exam last fall I did not know I was diabetic, it helps to know that a few others have had this happen with their prescriptions, and it gives me some more nformation for when I talk to him this week. Thanks everyone for the input!

zobel 2009-04-01 00:55:54 -0500 Report

My experience with eyes
I find that sugar level affects eyesight. Be in target range for a few days at least before exam. And when you get new lenses, get yourself to the same range for a day or two before deciding that the grind is bad (it happens) I find that when i run high, they get out of focus, and i can not adjust fo it since i got bifocals. Glasses should work correctly when conditions are the same.

Retinepithy in my case, is areas of white while reading a book for example "fun time" may look like "fu ti e" with one eye only. Your mind tends to fill in the blanks with the other eye.

So in short wait until your sugar is under control then get re-examined and new lenses.

i have also had my cataracts replaced, so i now need readers all the time


p.s blood pressure may also affect eyesight (?)

Judimar 2009-04-01 01:30:30 -0500 Report


I had to change eye doctors due to a change in my insurance plan. When I called to make an initial appointment the receptionist asked me if I was diabetic. When I informed her I indeed was she then asked was my blood sugar was stabilized because high blood sugar will cause an error in prescriptions.

I really like the doctor I found. He has a machine that will check my eyes without dialating them and I find this much better.

Recently our insurance has changed again so I am hoping that I get to keep this doctor.

I agree that once your blood sugar level has stabilized you should get with your doctor and inform him of the change and that your prescription does not seem to be working for you.

Best of luck,


ewskis 2009-03-31 23:34:16 -0500 Report

hen I was diogosted With diabetes I had some blurred vision as my BG lowered it cleared up and I didn't need any prescription change. Also remember that you should have an eye exam ever year and make sure the eye doc dilates your eyes and checks for retenopathy ( that is what causes the blindness) and it gets worse if your BG goes uncontrolled. You should get a meter as soon s possible and follow your Doc's recommendation for how often you should test. Earl

Steven Hermele
Steven Hermele 2009-03-31 22:55:11 -0500 Report

I also am new to Diabetes (about 2 weeks) and found out mainly thru my eyes also. Although the symptons were a bit diferent. I found it to be a good indicator. Really laid of the sugars for a few days and back came the vision.

You need to go to an Opthalmologist and tell him that you need need an diabetic eye exam!

rbergman 2009-03-30 17:19:11 -0500 Report

As a diabetic and one with eye problems, I have to have an eye exam every 6 months. Part of the issue with a new prescription is that your eyes adjust to seeing poorly, and then when you get the new prescription your eyes have to be trained to use that prescription. I myself for the last year and 1/2 have been tested for glaucoma in my left eye, I'm nearly blind in that eye compared to my right eye and each time I'm tested the tests show signs of glaucoma beginning but not actually there, I honestly forget what they call that, anyway, yes, you as a diabetic can go blind without proper control of your blood sugars, in my case its been a fairly slow process but still a process and I am actually past due on having an exam done, I should have had it done in December but have to save up, even if I do just go to Wal-Mart it costs me more because of the prescription for my left eye. Ask your doctor if he/she feels you need another eye exam, but, if it was just done in the fall, its been around 6mo, they may not feel you need one that soon and only need one each year, but ultimately it is your call, if you think there is something wrong maybe another exam is in order, however, if you don't wear the new glasses on a daily basis it will take your eyes longer to adjust to the new prescription, there again, it is your decision but if you have only been wearing them since last month you may want to give it a bit longer to see if your eyes adjust to the prescription as it does sound like you had a big change as you stated.


Antique-Dave 2009-03-31 16:25:59 -0500 Report

I appreciate the insight from everyone on this, I guess the thing that concerns me is that the first 4 weeks before I was diagnosed and before I was on any medication the glasses were doing the job.

In the past 2 weeks I've been noticing a difference, especially in the distance part of the prescription being blurrier. I'm taking my glasses off a lot more recently to look at things that are say 4 feet or farther away, the trifocal and bifocal part of the script seem okay but there is definately a difference in the other.

Prior to this new set of glassess I had been removing the old pair a lot too. I guess I'll have to ask the doc if my high blood pressure could have had an imapact on the exam and prescription and now that is is going down if it's having an affect as well.

Sarguillo 2009-03-30 16:53:16 -0500 Report

If you were just diagnosed, give it some time to stabelize. You could have clowded your retinas. I remember when I first found I had D, I would see starburts at night while driving. Rear tail lights would burst on me. Dr. said that was sugar that had coated my retinas. See an Optomologigst, Sorry if I cant spell. an eye doctor who will look a the back of your eye, not the vision portion of your eye. I am 44 years old now. Always had best Eye sight in family. Now I also as of a few weeks ago, now wear glasses. Things were starting to get fuzzy on me. Not sure if its the 40 year old eyes or if it was from being T2. Once you stabelize, go back and have your vision rechecked.

sparkysmom 2009-03-31 16:37:15 -0500 Report

I have worn glasses since I was 18 months old. I am now 55. I see those same star bursts around lights. I know I use to see an Opthamologist every 2 years , now I have to go every year. My numbers effect my eyesight too.

Antique-Dave 2009-04-03 09:01:45 -0500 Report

I went in and talked with them, and have an appointment for Monday, it had been a little longer then I thought since I was in. I'll see what he has to say about it all.

lipsie 2009-03-30 16:47:32 -0500 Report

Diabeties definately effects your eyes. Being you JUST had them done seem weird to me but you never know so personally I would set up for another appt. and make sure they know you are Diabetic whereas they do certain testing for us, and maybe that's a good thing for you to get taken care of cuz you probably did not get that part done, I don't know though…just a guess. I know Glacoma is a HUGE thing for us. I am not sure about the rest. Good luck though, and I was just saying from my view…remember, I'm no doctor or expect at that. Sheila

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