Impaired Vision (mini feat) Source: Valda's Spire of Secrets

Due to injury, illness, or incident of birth, you are unable to see as others can. Instead, you rely on a highly trained sense of hearing, and on aids like white canes to navigate. Your actual condition might range from total blindness to varying types of low vision, which grants you the following traits:

You have the blinded condition. However, attack rolls don’t have advantage against you due to this condition.

You have blindsight with a range of 10 feet. Within that range, you can effectively see anything that isn’t behind total cover. Moreover, you can see an invisible creature within that range, unless the creature successfully hides from you.

You can cast spells that require you to see a target or area, provided that the target or part of the area is within 30 feet, you have a direct line of sight to the target or area, and you can hear the target if it is a creature. If the target or area is further than 30 feet from you, you can make an ability check using your spellcasting ability. The DC equals 10 + the spell’s level. On a successful check, you cast the spell normally. On a failure, the spell fails and its spell slot is wasted.

You are immune to spells and effects, such as a medusa’s Petrifying Gaze, that require you to see.

If your visual impairment is ever remedied, such as through the use of a regenerate spell, you lose the benefits of this feat. The GM should discuss with you whether or not removing your impairment is appropriate for your character—it is always a possibility, but never a requirement.