Seunghun was born with normal hearing and vision, but at the age of 7 years he contracted meningitis. As a result he became legally blind and developed a moderate hearing loss. Seunghun can be said to have

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Adventitious deaf-blindness refers to the onset of deafness and blindness after a period of normal sensory functioning, such as in the case of Seunghun who contracted meningitis at the age of 7. Congenital deaf-blindness refers to deafness and blindness that occur from birth, while teratogenic deaf-blindness refers to deafness and blindness that occur due to prenatal exposure to drugs or other harmful agents.

Seunghun Was Born with Normal Hearing and Vision, but at the Age