CDBS

California Deafblind Services serves individuals from birth through age 21 who have combined hearing and vision issues, with or without additional disabilities.
https://cadeafblind.org/

Deafblindness is a rare and unique disability that occurs when an individual’s vision AND hearing are reduced, distorted, or missing. All children and youth who are deafblind experience some combination of vision and hearing loss. Only 1% of children and youth who are deafblind have profound hearing loss and total blindness and very few resemble Helen Keller. Most children and youth who are deafblind have some usable vision and/or hearing and one sense may be more impacted than the other.