The Principal Act is amended -

(a) in section 21(1)(e), by the insertion of ", treatment benefit" after "paternity benefit" (inserted by section 3), and

(b) in section 138(2) (amended by section 11 of the Social Welfare and Pensions (No. 2) Act 2009) -

(i) by the substitution of the following paragraph for paragraph (a):

"(a) dental treatment;",

and

(ii) by the substitution of the following paragraph for paragraph (b):

"(b) optical treatment and appliances;".