( ( eclipse ( ( blindness ( Focus-point type ) ) ( of ( ( vision loss ) ( caused ( by ( looking ( at ( ( the sun ) ( for ( ( ( ( too long ) ( a time ) ) , ) ( which ( can ( ( burn ( a hole ) ) ( in ( ( the retina ) ( of ( the eye ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB eclipse) (NP (NP (NN blindness) (JJ Focus-point) (NN type)) (PP (IN of) (NP (NP (NN vision) (NN loss)) (VP (VBN caused) (PP (IN by) (S (VP (VBG looking) (PP (IN at) (NP (NP (DT the) (NN sun)) (PP (IN for) (NP (NP (ADJP (RB too) (JJ long)) (DT a) (NN time)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (MD can) (VP (VB burn) (NP (DT a) (NN hole)) (PP (IN in) (NP (NP (DT the) (NN retina)) (PP (IN of) (NP (DT the) (NN eye))))))))))))))))))))) (. .)))
eclipse blindness Focus-point type of vision loss caused by looking at the sun for too long a time, which can burn a hole in the retina of the eye.
(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)))) (. .)))