Section 172(1) (amended by section 6 of the Act of 2015) of the Principal Act is amended by the substitution, in the definition of "relevant age", of the following paragraph for paragraph (a):

"(a) 16 years where -

(i) the person in respect of whom the claim for one-parent family payment is being made is qualified for -

(I) a blind pension under Chapter 5 of Part 3, or

(II) a carer's allowance under Chapter 8 of Part 3, including a payment under section 186A, or

(ii) a payment under Chapter 8A of Part 3 is being made in respect of a child,

and".