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A comment on Declining eyesight improved by looking at deep red light. Parent comment

Re:Declining eyesight improved by looking at deep red light by PaulHoule on Friday August 07, 2020 @09:08AM (#24081365)
I think the commentator meant "depth of field"
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Re:Declining eyesight improved by looking at deep red light by moron4hire on Friday August 07, 2020 @10:31AM (#24082267)
yes, didn't have my first coffee yet
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