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Mirror phenomenon after a shower

  1. Sep 27, 2010 #1
    Whenever I look in the bathroom mirror after a shower. I immediately notice where the reflection of my eyes are, there is some sort of larger shadow around them. If I move closer, my eyes look like bright white rings (no, it doesn't resemble the normal reflection). Both phenomena seem to change size and shape depending on where in the mirror I look and they don't appear unless the mirror is fogged. It all looks like some optical illusion and I doubt it's my imagination because at first glance at the fogged mirror meters away without thinking about it, the phenomena immediately makes itself noticible always accurately indicating where in the mirror my eyes are.

    Try it yourself. What do you think is going on?
  2. jcsd
  3. Sep 27, 2010 #2
    Sounds like high blood pessure to me have it checked
  4. Sep 29, 2010 #3
    It's possible I have high blood pressure but why would it cause these symptoms?

    To give you a better idea of what I see from a distance, the black I see is like the non existent grey dots in this optical illusion:

    Next time you leave the bath/shower, look at your reflection in the fogged mirror. It would interest me to know if this is common.
  5. Sep 29, 2010 #4


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    I don't understand what you post #3 is trying to convey, so I'm going to ignore it.

    It seems to me that, when you are looking at your own eyes, that is the only circumstance under which your line of sight is exactly normal to the mirror's surface.

    My first guess would be that the dark and light rings you are seeing are a cumulative effect of images in the myriad drops of condensation on the mirror.

    If the rings are truly concentric around the image of your eyes, that means that every light ray in any given ring has the same angle and thus would be subject to the same refraction.

    So I'd speculate that it's basically a sun dog, writ small.
  6. Sep 29, 2010 #5
    I'll chew that one over.

    The optical illusion in the 3rd post gives the impression of grey dots where the white lines intersect. Their (grey dots) appearance & behavior of changing visibility depending on where you look resembles what I see around the fogged mirror image of my eyes even from across the room.
  7. Sep 29, 2010 #6


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    Got all that...

    Ah. So a sort of elusive peripheral vision thingy.
  8. Sep 29, 2010 #7
    Right, but smaller and localised on the mirror image.
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