[thechat] Astigmata

Andy Warwick mailing.lists at creed.co.uk
Thu Apr 4 16:11:00 CST 2002


| On 2002/04/04, dave mclean said:

> I went for my first appointment ever with an Optometrist today.
Apparently
> I have astigmatism... (not to be confused with stigmata ;-)  My
prescription
> is +025 +075 90... does anyone know what this means or can point me in
the
> direction of a good vision web site that will tell me all about it?

Further to bragging re. my - so far unbeaten - super-strength contacts,
here's what those numbers mean...

<http://www.lens-net.com/html/doc.htm>
<http://www.laserforyou.com/faq.html#6a>

As an aside, apparently, 20/20 means you can read a letter 8.7mm tall at
20 feet; someone who can read the same size letter at 10 feet has 20/40
vision.

<http://www.longvieweyeassociates.com/faq_level/faqMain.html>

And as to what astigmatism is...

<http://www.kellogg.umich.edu/conditions/refractive/astigmatism.html>

HTH

Andy W



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