![]() The effectiveness of a light box depends on daily use, so buy one that's convenient for you. Smaller light boxes are more portable and easier to pack if you're traveling during fall and winter. Some look like upright lamps, while others are small and rectangular. Is it the style you need? Light boxes come in different shapes and sizes, with varied features. ![]() Ask your eye specialist for advice on choosing a light box if you have eye problems such as glaucoma, cataracts or eye damage from diabetes. Make sure the light box filters out most or all UV light to avoid damaging your eyes. Can it cause eye damage? Some light boxes include features designed to protect the eyes.Contact the manufacturer for safety information if you have questions. How much UV light does it release? Light boxes for SAD should be designed to filter out most or all UV light.Usually, the recommended intensity of light is 10,000 lux. Brighter boxes will require less time to use each day, compared with dimmer boxes, to achieve the same effect. How bright is it? Light boxes produce different intensities of light.Lamps used for skin disorders mainly produce ultraviolet (UV) light and could damage your eyes if used incorrectly. Some light therapy lamps are designed for skin disorders - not for SAD. Is it made specifically to treat SAD? If not, it may not help your depression.Here are some questions to think about when buying a light box for seasonal affective disorder:
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