Maybe not the case here, but.....If it is red eye, it is essential to differentiate between infection and acute glaucoma. Most GPs are not adequately trained to make the distinction, or deal with many eye problems. Many patients have gone essentially blind before the correct diagnosis is made.
I well remember as a pre-registered student in uk, going into a pharmacy to buy diagnostic drugs for my practice. The pharmacist was sporting a red eye, in considerable pain, but had no idea what was wrong. He was self-medicating for an infection. I told him it was clearly not an infection, and he required urgent ophthalmology.....now! Off he went, I was right, and he thanked me in due course...
It is also important to differentiate between viral, microbial, and amoebic infection. The treatments are quite different, and the wrong one could blind you.
Asking the security guards' wife, or AN members, is not a very safe option!