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Rigid gas permeable lenses can loses their coatings, and allergies/sensitivities to the preservatives in most cleaning solutions can develop over time. Both caused me problems, luckily a year of wearing glasses allowed me to recover. Now I only use hydrogen peroxide based cleaning solutions without extra ingredients. Much better, except for global supply chain problems right now....

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This is why I wish I could afford ICL surgery. I'm a -20 with some astigmatism and RGPs are my only option for 20/20 vision. Glasses (even high index lenses) are heavy and only get me to about 20/50 or 20/60. If I develop a sensitivity I'm screwed.

And the RGP market is so small that sourcing alternative solutions sucks - if Boston doesn't work for you good luck I guess.

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