( ( The ( same process ) ) ( ( can ( be ( used ( to ( ( make ( a lens ) ) ( with ( a ( concave ( paraboloidal surface ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ same) (NN process)) (VP (MD can) (VP (VB be) (VP (VBN used) (S (VP (TO to) (VP (VB make) (NP (DT a) (NN lens)) (PP (IN with) (NP (DT a) (JJ concave) (JJ paraboloidal) (NN surface))))))))) (. .)))
The same process can be used to make a lens with a concave paraboloidal surface.
(ROOT (S (NP (JJ Concave) (NNS lenses)) (VP (MD can) (VP (VB correct) (NP (NN myopia)))) (. .)))