YOU SAID:

Staring at absolutely nothing for extended periods of time.

INTO JAPANESE

長期間にわたってまったく何も見ない。

BACK INTO ENGLISH

I do not see anything for a long time.

INTO JAPANESE

私は長い間何も見ません。

BACK INTO ENGLISH

I have not seen anything for a long time.

INTO JAPANESE

私は長い間何も見ていません。

BACK INTO ENGLISH

I have not seen anything for a long time.