Fwd: [Tig] eyesight- lenses

[Rob Lingelbach]

Begin forwarded message:

> From: Bob Friesenhahn <bfriesen at simple.dallas.tx.us>
> Date: October 5, 2006 10:46:58  GMT+05:30
> To: Rob Lingelbach <rob at colorist.org>
> Subject: Re: [Tig] eyesight- lenses
>
> On Thu, 5 Oct 2006, Rob Lingelbach wrote:
>
>> what shop, is it a chain: where did you get them?
>
> It was a private optometrist shop.  Not a chain.
>
>> are they good at medium distances, such as the 20-30" I described?
>
> Yes, but I think that if you want to optimize for a particular  
> distance, then they should carefully measure your pupil position  
> for that distance to make sure that the inclination of your head is  
> most comfortable for that distance.  They seem to try to get your  
> pupil position centered such that only a tiny bit of head movement  
> serves to adjust the focus.
>
> You will find that success with such lenses is a matter of learning  
> how to hold your head in the precise position to obtain a clear  
> image of what you are focusing on.  Practice makes perfect.
>
>> can I repost your response to the list?   (many others may be  
>> interested)
>
> Yes.
>
> Bob
>
>>
>> Rob
>>
>> On Oct 5, 2006, at 10:12 , Bob Friesenhahn wrote:
>>
>>> On Thu, 5 Oct 2006, Rob Lingelbach wrote:
>>>> when you turn 50 or even sooner, you find that (in my experience  
>>>> anyway) your glasses don't give you the fine detail
>>>> at differing distances that younger colorists have.   Can anyone  
>>>> tell me about constant gradient (not bifocals) lenses?
>>>> do they help, are they worth it, is there a reason to use them?
>>> They seem to work well for me.  At first they seemed confusing  
>>> and weird but now that I am accustomed to them, close-up vision  
>>> is acceptable.  As with anything else, quality is important.   
>>> Make sure that the best coatings are applied (mine have Crizal  
>>> coatings).  It takes a several weeks to make good quality  
>>> lenses.  Don't purchase exotic lenses like these at a "one hour"  
>>> type shop.