I've been stung by Wasps several times. When six got stung in the stomach and was sick like the flu for 3 days. About 10 years ago I got stung by another one while mowing the yard. The reaction was like a normal bee sting on the site, but my vision got blurry for 3 days, then I could see 20/20 without my glasses for a month. I had to get some regular sunglasses with no prescription.
For the next two years every August those Wasp bustards would sneak up and sting me while mowing. The second year the sting site reacted about the size of your hand and had the same vision reaction. I put the vision thing together and associated it with the wasp sting. The third year my whole arm turned red and my vision did the same thing. My arm reacted bad enough I went to the doc. Had me take benedryl and said I was becoming more allergic with each exposure and offered to give me a bee sting kit. When asked if I have any allergies have to tell them wasp venom and they always look at me kind of funny. Doc says no idea about the vision thing that it must be a coincidence, no way.
They missed me the fourth year then got me again on the top of my head. The sting site didn't have more than a mosquito bite reaction, but my vision did the same thing. I figured the lack of site reaction was because there is just not much flesh on the top of your head to soak up and distribute the venom.
Every summer I go around with a can of wasp killer and spray around the windows and between the rain gutters and eave where they like to build nests. Haven't gotten stung since helping my nephews kids by paying them to mow my yard.
When I was driving from the R/C field to a gun show to sell one of my guns to get into R/C had my arm hanging out the window. A bee flew into my arm and stung me hard. Besides just hurting because I got hit in the arm at 40mph by a bee, stinger first, I didn't have any other kind of reaction. Was like literally getting stung by the R/C bug.
Think from the repeated exposure every summer I just might be becoming allergic to yard work. Always seem to break out in a sweat more and more as the season goes on.