Author Topic: tri-focals to shooting glasses (Read 362 times)

Jim n Iowa · « **on:** July 17, 2004, 11:41:15 AM »

I know this is not a problem for most but it will be. In shooting we tri focal people have the problem of rocking our head around to see front sights, thru the scope etc. Has any one a solution to this problem?
I was thinking that I don't need the reading part, but what amount of the medium should be upper compared to the long range lower or reversed?
Also what is advised for safety in glasses?
Jim

sgtt · « **Reply #1 on:** July 18, 2004, 08:51:37 PM »

I focus my scopes to my long range perscription. I no longer use any open sighted weapons for hunting. For plinking with open sights I purchased a set of stick on bifocals in my midrange optical plane from E. Arthur Brown. Works okay. If you figure out the perfect solution, I will be grateful.

Naphtali · « **Reply #2 on:** July 19, 2004, 06:54:05 AM »

I strongly recommend you consider a progressive lens. Rather than have it ground for ALL DISTANCES, have the near focus be at the edge of your arm's length. The lens will be lighter. It will have significantly less distortion. And it will remain useful much longer than bi- or trifocals. Remember, progressives are [infinitely] adjustable while trifocals are zeroed for three specific distances.

If you choose to go this route, the best available lens is Zeiss Gradal Top. A very good lens that is significantly less expensive is Varilux Wide-view.

Regardless of what lens you buy, GET GLASS! Grind will be more precise -- that is, you'll see better. And glass is much more scratch resistant than any plastic.

The only demonstrable downside to having glass lenses is that what I suggest is less impact resistant than polycarbonate.

I use only glass lenses, including my safety glasses in the shop.

Hope this helps.

Jim n Iowa · « **Reply #3 on:** July 29, 2004, 02:41:21 PM »

I have done my home work, and here is what I have ordered in glass's. Take the mid range (where you focus at arms length) place in the very center about double the height on your present mid range. This needs to be accomplished by raising the glasses on your face. (your Eyeglass people will explain). You will have a oblong sphere similar to a tri focal med and close in a glass that is all long range, with no reading part. You can have this made out of the same product safety glass is made of. I furnished the frames, and its about $50 per lens.
Jim