You think you've got problems Rob? i suffer from glaucoma. Ive had various procedures to help the situation including laser treatment and i ended up having a valve in each eye to relive excess pressure. This is basically a cut in the rear of the eyeball which lets fluid leak out. To stop the cut healing i have to use drops each night. During the operation my right eye was damaged and I'm classed as 50% blind in my right eye. If i shut my left eye and look through the right its like looking through a net curtain from the top half of my vision.
I'm right handed and right eye dominant so Ive had to learn to shoot left handed! To make matters worse i drive 44tonne chemical for a living so my mince pies get a right hammering