From Open Legend Wiki
Within this article you will find content that has not been officially published, and in many cases, still being "playtested" or experimented with. It is highly advised you take this into consideration before you attempt to start using it on your own. It would be good to see comments from other users, and to even view the discussion page on this particular article to see how people are using it.
Often times with Open Legend, people have attempted to homebrew something only to later realize you can already achieve this via the already existing core rules. Using homebrew content can easily break games, but that's the purpose of this wiki, to provide a single source for people to post ideas and playtest them to see if they work in practice and then fine tune them via editing of the wiki.
This is a good compliment with the Dark Vision Perk.
Whether through a racial trait, being a cave dweller from birth or from an accident, you are light sensitive. You can't stand high light-levels, like direct sunlight or the light from an electric torch being shone into your eyes.
Optional things to consider
You gain disadvantage 2 on attack rolls and perception rolls that are done in environments with high light-levels.
You might gain -1 on your Guard.
PC and DM may also consider giving disadvantage 1 in above-medium light-levels.
Taken from here.
Your eyes are sharp and keenly aware of many things, but this also makes you sensitive to sudden changes in light levels, often leaving you stunned or blinded.
Community Provided Advice/Information
Flavor for Settings
You are of a cave dwelling race mini dragons or giant humanoid rats, this flaw might be for you.
Radiation or poison has damaged your eyes, you can't stand the daylight.
You have spent so much time in the outer parts of the star-system that you have developed a sensitivity for the stars light. When you have to travel into the system, you close the visor on your craft to not be dazzled by overwhelming light.
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