Hi All,
I'm new to this forum so please bear with me...
We have a 1 1/2 year old patient with a +1.00 OD and a -5.75 OS. Cyl is minimal. If she gets glasses made I'm afraid that she won't wear them because of the vertical imbalance. Any suggestions or input would be appreciated!
Sv wearers with imbalances learn to simply turn their head and view the world through the OC's thus eliminating said imbalance. Now then, with this Rx, a bigger concern will be image size differential between the two corrections. (Aniseikonia ). An Iseikonic lens design may be in order to help with this. If the patient was older and had this correction for very long, they've usually adapted to suppressing vision in one eye to avoid the image size differential, but this young, the patient may not be *hard wired* to do this (suppress).
CL's will be this patients friend very soon.
Welcome to Optiboard!
Single vision slab off.
A waste of time and money. The patient will still only have about a two mm area in the lower slabed part before they encounter almost 1 and 2/3rds D of imbalance also. Head movement will still be required.Originally Posted by mshimp
Yes I agree. But it does help thin the -5.75 a bit more and helps as the patient naturally gazes downward. Also you could make the slab line a little higher. But you are right it is over priced and over kill for what you are trying to accomplish. I've done this for a little toddler before. I didn't charge them for it. Sometimes I forget what I do for a patient is expensive and arduous for other to do. Dittos on Iseikonic lens.
Are you in a medical practice where you have access to their records? Do you know what her visual acuity is? The child may not have much vision in one eye to begin with, if that's the case then you won't have to worry about imbalance. Call the Dr. and ask for sc acuity and cc acuity.
~Follow Your Bliss~
Probably amblyopia, penalizing the right eye with plus. Regardless, unless they're light perception only, or worse, in one eye, it would be prudent to place the optical centers at, or slightly below the primary gaze, minimizing vertical imbalance. Achieving a comfortable and stable frame fit is really your biggest challenge with what is probably/primarily a therapeutic pair of eyeglasses. Use 2mm minimum thickness Trivex or Polycarbonate.
Science is a way of trying not to fool yourself. - Richard P. Feynman
Experience is the hardest teacher. She gives the test before the lesson.
Just for the sake of it, put a plano instead of a +1.00 you're left with no vertical imbalance.
This child's main issue is aniseikonia not prism imbalance.
Still have a power/prism imbalance with plano OD when viewed away from the OS's OC. But yes, Aniseikonia would be the main issue here. ( if the patient is capable of binocular vision)
Or may very well be a therapeutic pair as Robert points out. (Instead of patching the good eye, blur it out)
Wow thanks for all the responses and the warm welcome! She doesn't have much vision uncorrected in her OS although I don't have her corrected acuities. Because of the age of the patient she is in a good position to adapt to whatever we give her, not having known anything different.
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