A person registered as an OCI is eligible to apply for grant of Indian Citizenship under Section 5(1)(g) of the Citizenship Act, 1955, if he/she has been registered as an OCI for five years and has been residing in India for one year , out of the five years before making the application.
2) A child whose parents have renounced Indian citizenship can regain their Indian citizenship by making a declaration within one year of turning 18. The declaration must state the child's wish to resume Indian citizenship