In order to add to my vast store of useless knowledge

[chip anderson]

I found that I have an old softlens demo lens (about 60mm in diameter when dry, hema.)
I placed this on the top of a receptical and filled it partially with Saline just to see if it would hydrate, or partially hydrate and how long it took.

I found that it took about 8 hours to show any evidence of hydration at all, and after 12-14 it became a little soft on the posterior side only in the area that contained saline, the anterior side remained dry and only very slightly flexible in the area with saline. No side to side imbibment (new word, maybe?)
I then repeated the process for the anterior side, similar result but the hydration took a few hours longer.

Don't know what I can do with this pearl of enlightenment, but there it is.

Chip

[Nettie]

You crack me up. Great experiment though.
I once put a poly lens under a chair leg and jumped up and down on it to see if I could break it. I couldn't.

[Chris Ryser]

You crack me up. Great experiment though.
I once put a poly lens under a chair leg and jumped up and down on it to see if I could break it. I couldn't.

Was that a weight reducing exercise ? The more you jumped up and down the less the lens broke. :bbg:

[Nettie]

Was that a weight reducing exercise ? The more you jumped up and down the less the lens broke. :bbg:

Exactly!

I think I need to try the experiment again though. I weigh about 6 pounds more than I did then so you never know........maybe the more I weigh the less it will break?:bbg:

[Jacqui]

hmmm... maybe I should try that

[Ladyoptician]

You crack me up. Great experiment though.
I once put a poly lens under a chair leg and jumped up and down on it to see if I could break it. I couldn't.

We took a poly lens and shot it with a 357 magnum. Put a dent in it. Was an excellent selling tool especially to police officers!!

[hcjilson]

My son put a BB through a polycarbonate lens. He was using a Daisy pump gun. The lens in question came from a Gargoyle frame made famous by Clint Eastwood in a Dirty Harry Movie. I will paraphrase a line from the film when responding to the story above. Ladyoptician, do you mean to tell us that a .357 magnum, the second most powerful handgun known to man, couldn't go through a poly lens? They did use a firearm demonstration at Optifair one year, but the firearm was a .25 caliber Crossman CO2 pistol which left the lens intact MOST, but not all of the time! :):)

[SharonB]

I had a patient who brought in his daughter's poly lenses with some hairlines on them. He wanted a Davis Vision warranty replacement. When I called Davis, they said according to the patient's panel, they would only replace broken lenses. I had the Davis lady on speaker phone for the Dad. He said, "OK, I'll break them" and left the office. About an hour later I got a call from him...."what are these things made of, ****ing rubber?" He had whomped them repeatedly with a go-devil, and of course they were in worse condition than before. We remade them at 1/2 the U&C. He was happy, and very embarassed.

[Dougfir8]

I had a patient who brought in his daughter's poly lenses with some hairlines on them. He wanted a Davis Vision warranty replacement. When I called Davis, they said according to the patient's panel, they would only replace broken lenses. I had the Davis lady on speaker phone for the Dad. He said, "OK, I'll break them" and left the office. About an hour later I got a call from him...."what are these things made of, ****ing rubber?" He had whomped them repeatedly with a go-devil, and of course they were in worse condition than before. We remade them at 1/2 the U&C. He was happy, and very embarassed.

Here is my ignorance showing. What kind of "go-devil" did he use? A dictionary says:
Main Entry:go–dev·il Pronunciation: \ˈgō-ˌde-vəl\ Function:noun Date:1852 : any of various devices: as a: a cultivator with wooden runners b: a weight formerly dropped in a bored hole (as of an oil well) to set off an explosive c: a cleaning scraper propelled through a pipeline d: a handcar or small gasoline car used on a railroad e: a child's sled
:angry: