Had a pt come in with recently purchased glasses. Poly trans pal OD +.75 -.25 x054/ OS +1.25 -0.25 x141 2.50 add. Old lenses were psr trans pal OD +0.75 -0.50 x059 OS +0.75 -0.25 x136 2.50 add. prism at fitting cross was 2 BD in new and .75 BD in old. I initially was thinking material or prism or even polished edges? I was looking at a hill covered in snow through her lenses and could see a distinct blue line right at top of the hill with new and not in the old. Did not really notice looking anywhere else? I think the white snow line just made it more noticeable. Just curious if anyone with similar issues?
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