I am moderately sensitive to all light, sunlight most of all. If it is completely overcast, I can usually get by without sunglasses; partly cloudy merits sunglasses, clear sky requires sunglasses and a hat. (Fortunately, I live in the Pacific NW so overcast is the norm.)
Inside, I usually have several dimmer lights around me to lessen the impact of just one glaring source (such as the tv).
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Those who cannot tell what they desire or expect, still sigh and struggle with indefinite thoughts and vast wishes. - Emerson
Selfishness is not living as one wishes to live, it is asking others to live as one wishes to live. - Oscar Wilde