eyes need more light to focus

hey guys, i noticed that over the last few months (i started losing eye focus eight months ago) i need alot more light to be able to focus my eyes on anything,
this seems to be common with eldery but I'm currently 22 -_-
i've already seen two optometrists in the last 8 months and was wondering if anyone else with either adrenal fatigue or hypothyroidism (i'm not hyperthyroid as my endo has told me can cause eye problems) have the same problem or if i should look into other causes for this.
thanks :)
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