hi all
was wondering if anyone can give me some help - and insight on my prism issue-
I have sen over the years - that the Od's understand and help opticans out in writing there rx's then some Md's
Some Background -
I have a few Md''s- most children Md's that write their rx's for prism as
od=== +2.00 - 75 x 120 ( 2.5 BU + BO @ 145
os=== +1.00 - 2.00 x 55 ( 1.0 BD + BO @ 160
Now I have no issues laying out Rx's such as
od- +2.00 -75 X 120 ( 1.00 BU + .50 BO )
but i get very confused and must outsoarce by orders when i recieve these rx's that the perscribing md uses a trial frame- has the PT spin the axis knob - and then just reads the axis locating of the totla prism - and i have issues when they don't BREAK IT OUT ---
can anyone help me with this - ? I was told there was a fomula to get the break down of the prism - in relations to laying it out - however it does not seem to work very well for me - and i am either told i am 10 or so degrees off of the prism - or whatever the case is - it is not correct-
When i spoke with my outside lab - they referred to this as resolve prism - however i am not sure if this is the correct turm -
It is no porblem for me to take a press on prism - use a protractor - and smack it on the axis they percribe - or iof we are dealing with a multifocal - i can easily place the prism on the axis in the SGX GENERATOR AND grind it --- but when they want this type of prism made in a SV finished pr of eyewear - ( no press on ) and i have to lay it out - i have issues ----
Thanks In adavnce for all you help - !!
Bt
Bookmarks