Diseases like this typically internally spread out along the ophthalmic division of the fifth (trigeminal) cranial nerve, having breached the blood-barrier rather than the blood-ocular barrier.
To have it show up in the eye repeatedly may simply indicate it’s travelled back down the nerve.
The pathway is not even rare, so I wonder what is newsworthy here. e.g. 500k Americans live with herpes simplex keratitis (or “eye herpes”) though many don’t realise, and you don’t see that on HN frontpage.
To have it show up in the eye repeatedly may simply indicate it’s travelled back down the nerve.
The pathway is not even rare, so I wonder what is newsworthy here. e.g. 500k Americans live with herpes simplex keratitis (or “eye herpes”) though many don’t realise, and you don’t see that on HN frontpage.