Hopefully, someone with expertise can help me out. I attempted to order eyeglasses online but run into snags.
1) I have a asymmetrical face with one eye .5 cm lower than the other.
Two of the most popular online sites only cut bifocals to a standard height they do not cut two separate heights. Is there any that will? Do I have to go back to the expensive box stores to get this done?
2) I dug out my past 15 years of scrips, I had kept only 4, and discovered my PD as measured by opticians are all different. 58,59,60 and a couple entered as dual and completely opposite of each other. Now I can understand while so many people have trouble with new glasses. When I take my own using a ruler and camera I get 57. Now I discover there is a near and distance pd's. It would seem to me that taking a pd with a ruler would be the near pd but is how all the online sites say to do it for the distance. How do you get the near? How much allowable error is there? Why is my pd taken by opticians all different? I would pay someone to take it but now have my doubts of the accuracy. How do you get an accurate distance and reading PDs?
1) I have a asymmetrical face with one eye .5 cm lower than the other.
Two of the most popular online sites only cut bifocals to a standard height they do not cut two separate heights. Is there any that will? Do I have to go back to the expensive box stores to get this done?
2) I dug out my past 15 years of scrips, I had kept only 4, and discovered my PD as measured by opticians are all different. 58,59,60 and a couple entered as dual and completely opposite of each other. Now I can understand while so many people have trouble with new glasses. When I take my own using a ruler and camera I get 57. Now I discover there is a near and distance pd's. It would seem to me that taking a pd with a ruler would be the near pd but is how all the online sites say to do it for the distance. How do you get the near? How much allowable error is there? Why is my pd taken by opticians all different? I would pay someone to take it but now have my doubts of the accuracy. How do you get an accurate distance and reading PDs?