If you cover one eye then the other each morning, there's a reason.

I told myself I was just checking. Every test I've had says nothing's wrong, which is why I never mentioned it. The checking didn't stop.

The pamphlets talk about the dramatic version. What I keep noticing is smaller than that, and ordinary enough that I filed it under getting older.

If you've googled this after midnight, you know the list. Six conditions. Half of them terrifying. I did that more than once and went to bed with a longer list than I started with.

An appointment can find nothing and you can still be checking the next morning. I know because that's what I did. The checking isn't drama. It's what you do when last year felt more solid, and nobody has given the feeling a name you trust.

I'm not going to name a disease from a web page. I am going to say the bathroom test has a context, and that context is bigger than the lens.

I was living in the short horizon. What if it happens while I'm driving. What if it happens overnight. What if the next check is the one that doesn't come back. Nobody in a seven-minute visit is paid to sit in that with you.

So you keep the palm test, and you keep the search, and you tell yourself you're being careful. From the outside, careful and frightened look the same. From the inside it's just Tuesday morning.

Here is what had already failed, in the order I tried them:

• Covering one eye to test the other
• An urgent appointment that found nothing
• Searching symptoms at two in the morning
• Waiting for the change to become obvious

Waiting until it is obvious is how it stays unnamed. The useful signs, if they are signs at all, are the ordinary ones.

What does an early sign look like when it's still ordinary?

Figure · the barrier

A wall is supposed to keep the back of the eye on its own side. Something from the gut may not stay there as the years go on. That is a question. It is also the first picture that made the bathroom test look like information.

What people do with that picture is one capsule a day, with food. I wanted it asked out loud in a clinic before I ran the same search at 1am again.

If you are still checking before the kettle, try it for sixty days and see.