70. 以放射線治療眼眶的良性疾病(如 Thyroid ophthalmopathy),應顧慮到且盡可能完全避免的晚期後遺病(Late effects of radiation)為何? (A)視網膜病變(Radiation retinopathy) (B)視神經傷害(Optic neuropathy) (C)角膜潰瘍(Corneal ulcer) (D)白內障(Radiation-induced cataract)