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I guess I still don't understand the actual process that free form takes to get to the finished product.

can someone explain to me how free form progressive lenses are made?

I heard some pretty wonderful things about you; I didn't realize how talented you really were.

I was wondering how do we get catracts and is only when we get older?

So how much total power does the eye roughly have as a refractive device and how much of that is contributed by the corena ,so how much is delivered by the lens?

That is exactly what I was looking for. It makes easy to understand and fun to learn thank you

we'll i was wrong also it's not the bones I was looking for it was the walls but in my readings It said there are four walls the lateral, medial, roof, and floor

I thought that there was seven bones frontal, maxiallary, ethmiod, spheniod,palatine, zygomatic and the lacrimal bones and four orbitial walls the roof, floor, lateral and medial walls.

Thank you for the links they were great and very understanding.

How many orbital walls are there? Should we consider the orbit as part of the adnexa? Why or why not?
Is the orbit to be considered part of the adnexa and if so, what then is the function of the...

I think that this is a great idea, I would like to read and reply to these types of questions. Thank you

I was just curious I was doing some reading and I came across this paragreaph and thought I would ask the experts. Where is this mucin (mucous) layer produced?

Hi Everyone

I just wanted to thank you for the help I found the info I needed on history of glass lenses with that archive.

What's the difference between Heat treated and Chem treated glass lenses?

Can any one help me? I don't know how to use the archive. So I can find out more about the history of glass.
I am looking for info on mt past question "histroy of glass lenses".

I just wanted to thank you for your quick response

what side is bicentric grind put on convex or concave for glass material?

what does that mean? wrong right lap

if you have grayness on two obliquely opposite postions on the lens, why is this caused?

should you use very warm water with powdered polishing compound or use room temp water?

what are the disadvantages to oil as a generator coolant?

is the reason you would not tape a plastic lens before blocking to keep the lens from becoming slightly tinted from the generator coolant or from keeping the lens from being scratched?

I am looking for information on the history of glass lenses. Which city made a monooply on glass manufacturing?
what is lead glass, crown glass, flint glass? how are colored glasses made?
what are...