Results 1 to 13 of 13

Thread: Problems with a Balance Lense

  1. #1
    OptiBoard Novice
    Join Date
    May 2019
    Location
    Edmonton
    Occupation
    Dispensing Optician
    Posts
    6

    Problems with a Balance Lense

    Hey guys! i just need help as i am having a hard time trying to troubleshoot the problem.

    Patients Rx:

    OD: Bal -2.25x 005
    OS: -7.00 -2.25x 005

    OC height 29

    The whole job with the axis is all correct, except the OD OC hgt is 22 instead of 29. Would this height difference cause problems? Patient has been usinmg this prescription for 5 years and everything seems to be alright except of now. The only thing i can think about why she cant see well or make up anything is this. eventhough she has a balance on right lense.

  2. #2
    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
    Join Date
    Oct 2016
    Location
    Maryland
    Occupation
    Optical Wholesale Lab (other positions)
    Posts
    1,198
    Quote Originally Posted by bettomomo View Post
    Hey guys! i just need help as i am having a hard time trying to troubleshoot the problem.

    Patients Rx:

    OD: Bal -2.25x 005
    OS: -7.00 -2.25x 005

    OC height 29

    The whole job with the axis is all correct, except the OD OC hgt is 22 instead of 29. Would this height difference cause problems? Patient has been usinmg this prescription for 5 years and everything seems to be alright except of now. The only thing i can think about why she cant see well or make up anything is this. eventhough she has a balance on right lense.
    Wow...balance being notated mans that there is no appreciable VA in that eye. Something tells me that the optician did not mean balance due to some VA remaining in the OD. Was the OD RX -7 -2.25? Most labs, when they see balance disregard the OC ht in the balance eye and center it, and without adequate instructions, will assume that there is no VA to resolve.

    Tomato, potato, tomato, pototo....
    I bend light. That is what I do.

  3. #3
    Compulsive Truthteller OptiBoard Gold Supporter Uncle Fester's Avatar
    Join Date
    Dec 2004
    Location
    At a position without dimension...
    Occupation
    Dispensing Optician
    Posts
    5,300
    Need more info.

    What is that right lens power in her old pair? Both powers for that matter.

    Are the OC's the same heights relative to the pupils in the as worn position?
    Last edited by Uncle Fester; 05-02-2019 at 03:02 PM.

  4. #4
    Master OptiBoarder
    Join Date
    Jun 2000
    Location
    California
    Occupation
    Dispensing Optician
    Posts
    2,816
    rx is 5 years old??

  5. #5
    OptiBoard Apprentice
    Join Date
    Dec 2014
    Location
    United States
    Occupation
    Optical Retail
    Posts
    28
    I'm not sure what the problem is at the moment that you are trying to solve. Is the patient seeing poorly out of the left eye?

    Balance means the patient probably has little or no vision in that eye regardless of prescription. So usually whether you have a plano lens or a matching rx lens to the left eye usually doesn't do much whether the OC is off or not in many cases.

    If they have had no problem till now with the RX in the frame it might be possible there is a change in the patient's RX or the glasses are not fitting the way they should.

  6. #6
    Compulsive Truthteller OptiBoard Gold Supporter Uncle Fester's Avatar
    Join Date
    Dec 2004
    Location
    At a position without dimension...
    Occupation
    Dispensing Optician
    Posts
    5,300
    You didn't make the new pairs right lens plano -2.25 x 005 did you?

    Sorry it's your first post and confusing.

    Oh- And welcome to Optiboard!

  7. #7
    OptiBoard Novice
    Join Date
    May 2019
    Location
    Edmonton
    Occupation
    Dispensing Optician
    Posts
    6
    Quote Originally Posted by Uncle Fester View Post
    Need more info.

    What is that right lens power in her old pair? Both powers for that matter.

    Are the OC's the same heights relative to the pupils in the as worn position?
    Right lense power is -7.00 -2.25 x005 however the OC height on it is 22 instaed of (actual pupil level =)29. Eye exam was done just last year. however prescription did not change for the past 5 years. Her previous glasses which was made last year too had the same lense. Left lense was exactly where it is on 29mm.

  8. #8
    OptiBoard Novice
    Join Date
    May 2019
    Location
    Edmonton
    Occupation
    Dispensing Optician
    Posts
    6
    Quote Originally Posted by vv0vv View Post
    I'm not sure what the problem is at the moment that you are trying to solve. Is the patient seeing poorly out of the left eye?

    Balance means the patient probably has little or no vision in that eye regardless of prescription. So usually whether you have a plano lens or a matching rx lens to the left eye usually doesn't do much whether the OC is off or not in many cases.

    If they have had no problem till now with the RX in the frame it might be possible there is a change in the patient's RX or the glasses are not fitting the way they should.
    Yes patient is seeing poorly out of the left eye , however it is the same Rx of her last glasses too. and she sees doesnt seem to be seeing things well .

  9. #9
    OptiBoard Novice
    Join Date
    May 2019
    Location
    Edmonton
    Occupation
    Dispensing Optician
    Posts
    6
    Quote Originally Posted by Uncle Fester View Post
    You didn't make the new pairs right lens plano -2.25 x 005 did you?

    Sorry it's your first post and confusing.

    Oh- And welcome to Optiboard!
    Its -7.00 -2.25 x005 on the OD lens

    Glad to be in optiboard!

  10. #10
    Compulsive Truthteller OptiBoard Gold Supporter Uncle Fester's Avatar
    Join Date
    Dec 2004
    Location
    At a position without dimension...
    Occupation
    Dispensing Optician
    Posts
    5,300
    Quote Originally Posted by bettomomo View Post
    Yes patient is seeing poorly out of the left eye , however it is the same Rx of her last glasses too. and she sees doesnt seem to be seeing things well .
    Same material?

    When you dot up the OC's from the old pair and the new do they look to be at the same height in relation to her pupils?

    Are the lens base curves, wrap and panto angles matched or very close?

  11. #11
    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
    Join Date
    Oct 2016
    Location
    Maryland
    Occupation
    Optical Wholesale Lab (other positions)
    Posts
    1,198
    Quote Originally Posted by Uncle Fester View Post
    Same material?

    When you dot up the OC's from the old pair and the new do they look to be at the same height in relation to her pupils?

    Are the lens base curves, wrap and panto angles matched or very close?
    My thoughts, too. One more item. What about the vertex? Is this a new frame? Since the OD is a balance, I would not chase the OC issue on that one, instead, maintain your "focus" on the OS...excuse the pun, please.
    I bend light. That is what I do.

  12. #12
    OptiBoard Novice
    Join Date
    May 2019
    Location
    Edmonton
    Occupation
    Dispensing Optician
    Posts
    6
    Quote Originally Posted by Uncle Fester View Post
    Same material?

    When you dot up the OC's from the old pair and the new do they look to be at the same height in relation to her pupils?

    Are the lens base curves, wrap and panto angles matched or very close?
    Yes same materil from same suplier, heigh is exactly bang on. The only thing i noticed is she sits her old glasses a few mm further compared to the new set however the frames are still fairly close to her eyes as nose bridge is not as high and plastic frame.

  13. #13
    OptiBoard Novice
    Join Date
    May 2019
    Location
    Edmonton
    Occupation
    Dispensing Optician
    Posts
    6
    Quote Originally Posted by lensmanmd View Post
    My thoughts, too. One more item. What about the vertex? Is this a new frame? Since the OD is a balance, I would not chase the OC issue on that one, instead, maintain your "focus" on the OS...excuse the pun, please.
    There is not of difference in the vertex, as she was pulling the old frame close and further to describe to me that still see. Which really confuses me ..

    .....buyers remorse?

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Balance lenses
    By ASoule in forum General Optics and Eyecare Discussion Forum
    Replies: 18
    Last Post: 11-15-2018, 08:38 AM
  2. What is the definition of Balance Lens ?
    By James Ye in forum General Optics and Eyecare Discussion Forum
    Replies: 7
    Last Post: 02-08-2018, 08:45 AM
  3. Balance Lens Question
    By JuliaG in forum General Optics and Eyecare Discussion Forum
    Replies: 5
    Last Post: 11-05-2016, 07:31 PM
  4. Balance Lenses
    By keagles2 in forum General Optics and Eyecare Discussion Forum
    Replies: 9
    Last Post: 12-14-2006, 06:59 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
  •