In truth, many newly marketed materials have both advantages and disadvantages. Take, for instance, yellow-tinted intraocular lenses, which block out blue light. Some believe that these can influence mood and prompt depression.
事實上，許多新特材都有利有弊，就像號稱可以擋掉藍光的黃片水晶體，也有人認為可能有影響心情、造成憂鬱的疑慮！