People who should exercise caution when using light therapy boxes include:
Those with pre-existing eye diseases, including cataracts or glaucoma.
Those taking medications that increase sensitivity to sunlight.
Those with diabetes, which already increases your risk of eye damage. Light therapy can further damage your retina.
Those with bipolar disorder. Light therapy can trigger hypomania or mania.
You may need to use light therapy under medical supervision or use treatments for SAD.