Computer Progressives

**Grubendol** · 12-06-2006, 06:19 PM

Is there a computer progressive option available in some form of high index? I know I can get the Access and Office in CR and Poly, but I want 1.60 or 1.67

**Grubendol** · 12-07-2006, 12:08 PM

Even if it isn't a true computer progressive, is there a recommendation for something which can work similarly in a 1.60? Any help would be greatly appreciated!

**hotsauce** · 12-07-2006, 12:48 PM

Liberty's probably the best repurposed-PAL-into-occupational-lens, but Poly's the highest index you can get it in. Since you requested 1.60, what about a Definity Short? Right index, short(er) corridor, and you can pick a +0.75, +1.00 or +1.25 add digression as the patient's needs require.

**Grubendol** · 12-07-2006, 12:53 PM

Definity was my first thought too. We are going to be doing this in a T2, so it needs to be a high index lens, otherwise there is no warranty on materials and high frequency of starring.

**Robert Martellaro** · 12-07-2006, 01:02 PM

Originally Posted by Grubendol

Is there a computer progressive option available in some form of high index? I know I can get the Access and Office in CR and Poly, but I want 1.60 or 1.67

Some folks believe that the best computer lens is a multifocal that has the distance and near powers adjusted to match the wearer's work distances, allowing the use of a variety of PAL designs and index of refraction materials.

Regards,

**EyeFitWell** · 12-07-2006, 01:49 PM

Definity short, but tell the lab that the patient's intermediate Rx is his distance Rx, then adjust add accordingly.
Works well for me!

**Fezz** · 12-07-2006, 01:58 PM

I have had much more success with either Sv or Ft-bifocal options as computer glasses. Much wider field of view and scanning area. The materials availability is obvious. A lot of my patients appreciate the cost savings also. I know it does not answer your question, just another angle!

**Grubendol** · 12-07-2006, 02:07 PM

FT isn't a solution for this case, neither is SV. Pt. needs the variable focus of a progressive

**Cherry Optical** · 12-07-2006, 06:38 PM

Originally Posted by Grubendol

Is there a computer progressive option available in some form of high index? I know I can get the Access and Office in CR and Poly, but I want 1.60 or 1.67

Shamir Office = Polycarbonate
Nikon Online = 1.67

Adam

**Grubendol** · 12-07-2006, 06:46 PM

Poly isn't any good for a T2, they crack really badly and are not warranteed against the same. I think we're gonna go with the Hoya Summit.

Thanks!

**Fezz** · 12-07-2006, 07:38 PM

Originally Posted by Grubendol

I think we're gonna go with the Hoya Summit.

Thanks!

Grub,

I assume that you mean the Hoya Summit CD? I fit a lot of Hoya lenses. I don't think that the CD is the way to go. The width of corridor, and reading is limiting for a lot of patients. As a computer lens, I would assume that the limited areas would be a hinderance? I could be wrong, though....

**Grubendol** · 12-08-2006, 10:31 AM

Fezz,

Thanks for the tip....what would you recommend? The limitations we're facing are due to the fact that the patient is using a T2 frame. The Lenswork lab has limited access to many lenses that are our mainstays. And T2's crack and star very easily unless it is trivex or high index. Poly just isn't a good option.

We have a high seg height for the glasses (22), the patient has a plano distance (mild cyl) and a 2.50 add.

Thoughts? Suggestions? Essilor products are a 2-3 week delay with T2

**mike.elmes** · 12-08-2006, 10:46 AM

Originally Posted by Cherry Optical

Shamir Office = Polycarbonate
Nikon Online = 1.67

Adam

We also use the Nikon Online with great success....available in 1.67 too.

**KStraker** · 12-19-2006, 02:01 PM

You might try a Hoya Summit ECP. It has a very wide distance area and good channel width.

**macularry** · 12-19-2006, 03:58 PM

I prescribe a custom lens for my patients. I use their age, height and monitor distance to configure the lens. Most computer lenses put a standard amount of additional plus in the distance or intermediate area. This works for some people, but is hit and miss at best. You can use any type of progressive once you have determined the proper power distribution. This will give 600% more computer viewing area.

Someone who is 6'1" as opposed to 5"1 will require up to .5 diopter difference in the computer viewing area, even if all other components of the "general use" prescription are the same. This is not taught in most schools.

In addition age is a factor. Someone who is 40 as opposed to 50 will require less plus because the same person at age 40 has more accommodation than when they are 50.

I use an algorithm that I created to configure the prescription for computer use. Anyone who uses the computer for more than 1 hour continuously is cheating their vision and work performance by using general use glasses. Even worse, wear monovision contacts at the computer for extended periods of intense computer use. In this case one eye is focused at optical infinity(20 feet) and the other is focused at 16 inches. Most experts recommend a minimum monitor distance of 22 inches. The algorithm can configure a computer prescription for this situation as well.

If you would like to use the algorithm, shoot me an email:

DrLarryTarrant@aol.com