Domestic blindness describes the situation that when you are trying to look for something in your house, but you can't find it, so you ask your spouse¹ or parents for help. Upon asking someone for help, he/she points to the item that you were looking for, which is usually standing² right in front of your face.

Domestic blindness描绘的是这样的情景：你在家找某样东西，怎么也找不到，于是让家人帮忙找。而家人立即就找到了，因为那样东西就在你面前。我们可以将这个表达译为“寻物眼盲症”。

For example:

I must've had a case of domestic blindness! I’ve been looking for my cellphone the whole morning, and it turned out that it is right in my pant pocket.

我一定是得了寻物眼盲症。我一早上都在找我的手机，结果手机就在我裤兜里。