Keep the abbe high, CR, Trivex, 1.6 are the go to's for this script. This has everything to do with the material. Seeing color fringes means TCA Trans Chromatic Aberration.I don't have a magic bullet but I can offer a few suggestions: HOA's are really not a concern when designing ophthalmic lenses, except for PALs, where coma and trefoil can be managed somewhat, but not eliminated. 11 respectively.Įffect of chromatic dispersion of a lens on visual acuity. Using Trivex with an Abbe value of 44, the LCA is. If we do not split the prism, and use a 1.67 refractive index material with an Abbe value of 32, the LCA is. Values for P includes prescribed and/or induced prism.įor example, Rx is plano sphere OU with 10 prism diopters base out total.
We can calculate lateral chromatic aberration (LCA) by dividing the prism (P) produced at a given point through the lens using Prentice's rule, by the Abbe value (v) of the lens material.
Pupil sizes will change according to conditions as well as position of wear.What you are describing is Lateral Chromatic Aberration. The wavefront will not be perfectly corrected towards the periphery.
#Destiny 2 chromatic aberration plus#
A high plus lens is going to be subject to the HOA as the gaze is directed farther away from the optical axis. Pehaps the color fringing could be due to the high plus lens/prism deisgn acting like a spectrum prism depending on the oblique regions? Even with small pupils the aberration should still be considered. I agree with you but the spherical aberration I feel is a real problem here. Not sure if my question can even be answered but any advise at this point would be well received. She has been patient during this whole ordeal understanding that her Rx isn't typical and her eyes are uncooperative but I am starting to think I need to refer her back to her previous dispenser because I need to get her into her new glasses one way or another whether I do it or not. The worst part is that she was so happy with the service she received starting from the doctor and especially with the service at the optical in regards to the help she received choosing a frame etc. feeling bad that she still hasn't been able to walk away with her new glasses. embarrassed we haven't been able to get it right and 2.
#Destiny 2 chromatic aberration trial#
We have redone her lenses 2x already and she continues to complain of seeing a shadow of color around things that she doesn't in her old glasses and doesn't see while wearing a trial frame with the new Rx.Īt this point I am 1. She is in and has been in progressives before. She doesn't have Nystagmus but they go back and forth regarding which one dominates, shifting. She has VSP and high + power and cylinder, plus prisms and her eyes don't have a reliable PD. She is new to our office (coming from an optometry/chain store). Will using a larger lens than what a patient has been in before cause a patient with prisms to suddenly see what she describes as "bars of color" above and below the letters on the Snellen chart? The patient has gone from a very tiny "kids frame" sized frame to a bit larger "geeky" wayfarer type plastic frame. I hope all ringed in the new year with a bang. Good morning all! Its been a while since I have been on here.
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