Federal Definition of Deaf-Blindness
Deaf-blindness means concomitant hearing and visual impairments, the combination of which causes such severe communication and other developmental and educational needs that they cannot be accommodated in special education programs solely for children with deafness or children with blindness.
34 CFR, Part 300, Subpart A, Sec. 300.7(c)(2)
Infants and toddlers with disabilities means “individuals from birth through age two who need early intervention services because they are experiencing developmental delays…in one or more of the following areas: cognitive development; physical development, including vision and hearing; communication development; social or emotional development; adaptive development; or have a diagnosed physical or mental condition that has a high probability of resulting in developmental delay.”
34 CFR, Part 300, Subpart A, Sect. 303.16