Had a slightly similar event here last Saturday.Mrs Albs was putting her contact lenses in when she dropped one on the tiled surface in the bathroom. She dipped it in the lense cleaning solution (a new bottle and not the normal brand)to clean it and then popped it in here eye.She immediately started screaming in agony - I got het to rinse it with water repeatedly until it was bearable, but it was still very red,swollen and painful.She was adamant that it was caused by the lense cleaner,so to prove her wrong I tipped it in my left eye.
...........I immediately felt burning ,stinging etc.and ran upstairs to wash it out.
THEN - we decided to read the instruction.On the back of the bottle in red (but very small print) it said "contains hydrogen peroxide,do not allow to come into contact with eyes".
It comes with a special container provided which has a widget type thing inside,which after 6 hours of lenses being in there for a soak,neutralises the solution.Its then safe to put the lenses in the eyes.
Her eye wasnt back to normal until yesterday morning.