Eye strauin or dry eye?

[Tenderfoot855]

I take restasis twice a day.  Have some tears.  Have considerable atigmatism and wear polycarbonate lenses.  My eyes don't seem to feel stressed when I don't wear my lenses, but feel stressed when I do. The prescription has been checked and rechecked and has not changed significantly over the last five years.  Can the lenses (polycarbonate) and/or the astigmatism correction be causing my eye stress?  (I am 85 years old and in good health.  I take blood pressure medicine and a water pill.  I have tried omitting the water pill with no reduction in my eye stress, but my blood pressure rises above normal levels.)  I have increased my omega 3 intake significantly since reading the suggestion.  Tenderfoot855.

[John C Hagan III, MD, FACS, FAAO]

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[Tenderfoot855]

Thank you.

[John C Hagan III, MD, FACS, FAAO]

Frame size and shape, type of bifocal/trifocal/progressive, angle of lens (pantoscopic tilt), base curve of lens, pupillary distance, location of optical centers, tints, coatings, lens material, propriatary (patented) features of lens blending-manufactuer, lens material, apical distance these are the important along with the actual lens RX.
JCH MD

[Tenderfoot855]

Would you mind listing some of these other variables?

[John C Hagan III, MD, FACS, FAAO]

Some people don't do well with polycarbonate lens.  However there are a dozen or more other variables besides the PCB lens that might be causing eye strain.

JCH MD