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Jeff's GeekBearCave on LJ

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January 2nd, 2010

(no subject) @ 01:16 pm

Music: HGTV DIY programme


chipped eyeglasses chipped eyeglasses
bathroom tile floor + eyeglasses + 5 foot drop => lens chipped and popped out.
let's hope this is the extent of broken stuff in 2010.

 
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From:putzmeisterbear
Date:January 2nd, 2010 06:47 pm (UTC)
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OK Geek Bear Jeff, live up to your handle and fix it with some tape.
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From:choochoo68
Date:January 2nd, 2010 07:03 pm (UTC)
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white masking tape for the corners?
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From:geekbearjeff
Date:January 3rd, 2010 10:46 pm (UTC)
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the lens popped back in without any need for duct-tape ;)

Edited at 2010-01-03 10:46 pm (UTC)
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From:choochoo68
Date:January 2nd, 2010 07:05 pm (UTC)
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that's what the spares in the glove box are for
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From:geekbearjeff
Date:January 3rd, 2010 10:49 pm (UTC)
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the spares in the glove box are the previous prescription and I'd be better off going all cap't hook-style and covering up the eye with the missing lens.
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From:choochoo68
Date:January 3rd, 2010 11:54 pm (UTC)
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now THAT would be interesting to see...especially if you have the rest of the outfit too ;)
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From:danthered
Date:January 2nd, 2010 10:26 pm (UTC)
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Nuts. Been there and done that, but still prefer my real glass lenses over plastic ones.
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From:geekbearjeff
Date:January 3rd, 2010 10:54 pm (UTC)
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ug.
the good news is that I can use them as they are and we've got appointments for next week with the optometrist up near where Mom lives for exams and checkups.

I'll check on glass lenses, except for dropping them and chipping the material, I seem to make out pretty well with the plastic lenses.
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From:danthered
Date:January 3rd, 2010 10:58 pm (UTC)
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Wait...these what you're showing us are plastic? Wow, from the nature of the chipping I would've sworn they're glass. I prefer glass because with my particular prescription, with plastic I get a lot of chromatic aberration off axis (bright objects appear to have a red band on one side and a blue band on the other).
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From:geekbearjeff
Date:January 3rd, 2010 11:12 pm (UTC)
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yup, they're plastic. I suspect the lens would have been completely destroyed if they were glass.

The banding sounds like what is seen with Panavision movie lenses and similar lighting conditions, so I suspect that you have a particularly strong astigmatism correction.
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From:geekbearjeff
Date:March 15th, 2010 05:10 am (UTC)
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Because I've managed damage the lenses of this and the previous pair Judy, the Optometrist's office mgr, suggested that I try a different type of plastic for the lenses, polycarbonate, I think, which I will not be using again.

I've been using the new glasses for a while and notice a similar fringing/banding when looking at a high-contrast scene or a sharply defined edge off axis and out the sides of the lenses. I see yellow when looking through the left side of the lenses and blue/cyan when looking out of the right side.

I've mostly gotten used to the 'fringing' but it can be quite unnerving when driving at night!

I hope this finds you well!
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From:danthered
Date:March 18th, 2010 09:44 pm (UTC)
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Oof. Yeah. Polycarbonate is mechanically very tough; it's highly impact resistant, so it's a common choice for lenses for rambunctious little boys and for safety glasses. With appropriate hardcoat, it can be reasonably scratchproof. But optically it's very inferior to other plastics, which in turn are optically inferior to glass.

All in all I'm reasonably well, thanks. It's a beautiful sunny day out, which of course explains why I'm inside.

And you?
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From:danthered
Date:March 18th, 2010 09:55 pm (UTC)
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The banding can be turned to advantage, BTW. Your field of vision now includes an ever-ready built-in spectroscope. So if you need to determine the relative characteristics of the SPD of whatever light source happens to be around…you're all set!

Jeff's GeekBearCave on LJ

[no user serviceable parts inside.]