Ophthalmological composition comprises nitrogen dioxide group substituted benzene compound (Q) as a dye. Ophthalmological composition comprises nitrogen dioxide group substituted benzene compound (Q) of formula (I) or (II) as a dye. R 1>, R 5> : optionally substituted hydrocarbon R 2> : optionally substituted hydrocarbon with at least a polymerizable double bond R 3> : H or optionally substituted hydrocarbon R 4>, R5a : H or optionally substituted hydrocarbon X : O, S, NH or NR 5> n : 1-3, when R 2> is (meth)acryl residue, or 0-3, when R 2> is not (meth)acryl residue X 1> : O, S, NH or NR 6> and R 6> : optionally substituted hydrocarbon. [Image].