My heart dropped a little, I needed to stop, just for a little while, before we made our way up the steep 90 minute climb that would bring us up onto the ridge.
I very feaberly called out "I just need to stop and get a drink." Tim looked back at me and was obviously happy to wait for me.
Then the panic struck.
I was 5 meters from Tim and I stumbled. An easy mistake to make I thought? I bent over and put my pack down in a flustered state and as I stood up again my vision failed.
I could no longer see straight. I couldn't focus in the centre of my field of vision and the edges were blurry and distorted. The light was bright on my eyes and it shocked me. My hands went up to rub my eyes in an attempt to clear my sight. Nothing.
Even though I was in a confused state, I had full consciousness and was aware Tim had seen me having some kind of problem. I remember him moving closer and me desperate to look at him for reassurance but my eyes just wouldn't focus. It got to the point where he was standing up close to me looking at me directly in the eyes yet my pupils were darting about the place, everywhere but at him. My balance was going fast. I felt as if I had been spinning round and around.
It all came as such a surprise and of course I wanted to tell Tim I want having problems seeing and being spacially aware. I opened my mouth to say "I can't see" but nothing came out.
I couldn't talk now either.
Somewhere in my head, the signals from my brain to my mouth had got tangled. I had no control of my mouth which then developed to having no control of my whole face.
I remember feeling confused and worried, I knew things were not right and were worsening.
Tim would say "look at me Lucy, look at me, talk to me Lucy, talk to me." His voice comforted me. He was remaining calm and collected but after the second time asking if I could talk, his voice cracked and I could sense he was getting considerably concerned.