Gel that costs pennies has restored sight to 7 out of 8 patients – Earth.com
https://www.earth.com/news/gel-that-costs-pennies-has-restored-sight-eye-low-pressure-to-7-out-of-8-patients/
1–2 minutes
https://www.earth.com/news/gel-that-costs-pennies-has-restored-sight-eye-low-pressure-to-7-out-of-8-patients/
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