Results 1 to 2 of 2

Thread: K-value table?

  1. #1
    OptiBoard Apprentice
    Join Date
    Aug 2019
    Location
    SB
    Occupation
    Dispensing Optician
    Posts
    11

    K-value table?

    Hello folks!

    I was looking into estimating lens thickness and I remember that besides the sag height formula, there was another way to estimate it where you can use a constant K-value and multiply it by the power and add the minimum thickness to get a rough guestimate. Does anyone have access to the table with constant K-values? System for Opth. Dispensing mentions the concept but never provides the table.


    Any help would be appreciated!

    p.s. Anyone know how accurate this would be compared to the sag height formula? Thank you.

  2. #2
    OptiBoard Novice
    Join Date
    Mar 2021
    Location
    Indiana
    Occupation
    Dispensing Optician
    Posts
    2
    Can anyone explain how to determine whether to SAP OR FAP when determining a ccl’s from an rx?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. In need of a Roto Table
    By iiii's in forum Optical Marketplace
    Replies: 2
    Last Post: 12-15-2015, 06:35 PM
  2. Table top Mirrors
    By Ocular Dexter in forum Optical Marketplace
    Replies: 5
    Last Post: 06-29-2012, 09:51 PM
  3. dispensing table
    By Gators in forum General Optics and Eyecare Discussion Forum
    Replies: 6
    Last Post: 02-07-2011, 03:59 PM
  4. but they're not even on the table...
    By Bobbi in forum General Optics and Eyecare Discussion Forum
    Replies: 4
    Last Post: 07-16-2009, 10:59 AM
  5. Dispensing Table
    By optigirl70 in forum Optical Marketplace
    Replies: 2
    Last Post: 04-07-2006, 08:53 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OptiBoard is proudly sponsored by:
Younger Optics and Vision Equipment