( ( Looking ( at ( ( the sun ) ( ( ( through ( ( ( ( a camera ) , ) ( a telescope ) ) , ) ) or ) ( with ( your ( naked eye ) ) ) ) ) ) ) ( ( can ( cause ( immediate ( , ( permanent blindness ) ) ) ) ) . ) )
(ROOT (S (S (VP (VBG Looking) (PP (IN at) (NP (NP (DT the) (NN sun)) (PP (PP (IN through) (NP (NP (DT a) (NN camera)) (, ,) (NP (DT a) (NN telescope)) (, ,))) (CC or) (PP (IN with) (NP (PRP$ your) (JJ naked) (NN eye)))))))) (VP (MD can) (VP (VB cause) (NP (JJ immediate) (, ,) (JJ permanent) (NNS blindness)))) (. .)))
Looking at the sun through a camera, a telescope, or with your naked eye can cause immediate, permanent blindness.
(ROOT (S (S (VP (VBG Looking) (ADVP (RB directly)) (PP (IN at) (NP (DT the) (NN sun))))) (VP (MD can) (VP (VB cause) (NP (NN blindness)))) (. .)))