[Leica] Re:Adjustable eyeglasses

[LRZeitlin@aol.com]

In a message dated 3/5/04 1:20:24 AM, owner-leica-users@mejac.palo-alto.ca.us 
writes:

<< I have worked with the glasses you mentioned.  They were indeed for use in 

underdeveloped countries.  The lens power was adjustable by the user or a 

breifly trained technician to correct for small to moderate amounts of 

hyperopia (farsightedness) or myopia (nearsightedness).  The lenses were 

made from a stiff membrane on one side, a more flexible membrane on the 

other and oil in between.  A syringe type device "injected" the right amount 
of 

oil to create a plus or minus power lens.  It is still in development.  The 
lens 

mentioned in the article by Phillips could have broader usage than spectacle 

lenses.  Interesting technology.  On the other hand, it may be a "cure" 
looking 

for a "disease." >>

What a wonderful idea for aging eyes. I wear bifocals and use a third pair of 
intermediate focus lenses for computer work. The bifocal line falls across 
the lower middle of my optical field and it is a nuisance to have to hunt up the 
computer glasses whenever I sign on. What I would love is a pair of 
spectacles that focus on whatever I look at.

If a cheap P&S camera can adjust the focus of the lens accurately within a 
fraction of a second, why not a pair of eyeglasses that can adjust focus as 
well? Say a pair of miniscule sensors in the frame that triangulate on the object 
of regard and a miniature pump that adjust the amount of fluid between the 
lens elements. In bright sunshine the fluid could be darkened to adjust light 
levels. And when I feel blue, the fluid could be rose colored. But I digress---

Larry Z
- --
To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html