# How do doctors test for diabetes? **URL:** \ **Category:** Factual Questions\ **Created:** [February 4, 2007, 2:50am UTC](https://boards.straightdope.com/t/how-do-doctors-test-for-diabetes/390735 "2007-02-04T02:50:34Z")\ **Posts on this page:** 2\ **Page:** 2
**Author:** ![alphaboi867](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/alphaboi867/32/3898_2.png) [@alphaboi867](https://boards.straightdope.com/u/alphaboi867)\ **Post date:** [February 19, 2007, 1:38am UTC](https://boards.straightdope.com/t/how-do-doctors-test-for-diabetes/390735/21 "2007-02-19T01:38:51Z")
[QUOTE=jcheckwood] …I noticed that I often had blurred vision at work, I was staring at computer screens for 12 hours a day so I attributed it to that. Soon after that I began having incredible urges to drink, sometimes 2 gallons plus of water a day. This of course caused me to have to urinate quite a little bit… [/QUOTE] I’ve worn glass since kindergarden and until a recent surgery had 20/200 vision sp the blurred part was never aplicable to me. Still is it odd that I go through 6-10 litres of water a day? ---
**Author:** ![TheBaptiste](https://avatars.discourse-cdn.com/v4/letter/t/f6c823/32.png) [@TheBaptiste](https://boards.straightdope.com/u/TheBaptiste)\ **Post date:** [February 19, 2007, 1:40am UTC](https://boards.straightdope.com/t/how-do-doctors-test-for-diabetes/390735/22 "2007-02-19T01:40:54Z")
I would have to say that it is an excessive amount. If you current blood work is ok, then you need not worry for a while at least. I wear glasses too, since I was young, the blurred vision is actually from the eyeballs swelling up due to the excessive sugar in the body. When I started on the insulin the blurred vision continued for a long time due to the shirinkage of the eyeballs back to normal size. [Previous page](https://boards.straightdope.com/t/how-do-doctors-test-for-diabetes/390735.md?page=1)