Re: double images
- From: ImageAnalyst <imageanalyst@xxxxxxxxxxxxxx>
- Date: Wed, 19 Sep 2007 19:05:33 -0700
On Sep 16, 6:51 am, Narasimham <mathm...@xxxxxxxxxxx> wrote:
A double image is temporarily formed due to lens accomodation
insufficiency in the normal eye e.g., when lower power of glasses is
first used for reading and then an attempt to see a far off object is
made.
Is the second image above the corrected image, below, or are the
images displaced one half up another half down equally? TIA
Narasimham
==============================================
I have never experienced this. In my experience when you use reading
glasses and then look far off, the image simply looks blurry -- I
don't get a double image just a blurry one.
The only thing I can possibly think you mean is if you took at the
very top edge of the lens, so that you are getting light from both the
lens and above the lens. I'm doing this right now as I write. A
small portion of the image seems to be doubled. And this is for only
a narrow band through the entire scene -- most of the scene is not
doubled and the top part is my naked eye and the bottom part is
through the reading glasses. The image through the lens appears at a
higher height than what you see with no lens. Again, this is my
actual observation right now.
Regards,
ImageAnalyst
.
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