For years, people who have been reading the science have been warning that covid infections cause immune system disruption.
Not in a mysterious hand-wavy way.
In a very specific, well-understood biological way:
Covid infections damage B cells and destabilise antibody production.
And covid infections also trigger autoimmune activity in a significant minority of people.
Eye problems are one of the most common after-effects of covid infections, and one of the most common issues of Long Covid - but they're not talked about much.
This is part two of my thread working through eye conditions that have become *much more common* since Covid struck.
Stan Laurel said your eyes are the windows to your soul.
I don't know about that, but I do know that your body is really complicated, but your eyes... yeah, your eyes are something else.
An orbital disorder is a problem affecting the eye socket. It can involve swelling, pressure, pain, double vision, or inflammation around the muscles and tissues that move the eye.
Covid makes these problems more likely because it can trigger strong inflammation in the tissues behind the eye and can affect the blood vessels and nerves that run through the orbit. That extra inflammation means more people needing hospital care for eye socket pain or pressure.
I've written before about the confusion Covid causes when it affects different age groups in different ways.
I'd like to just illustrate that by talking about the way the body handles potassium.
Potassium balance relies on four major systems:
Kidneys.
Hormones.
Acid base control.
Cell integrity.
Covid infection interferes with all four systems, and the result is *hyperkalaemia* - too much potassium in the bloodstream.