YOU SAID:

I like both gender's eyes.

INTO JAPANESE

私は両方の性別の目が好きです。

BACK INTO ENGLISH

I like the eyes of both sexes.

INTO JAPANESE

私は男女両方の目が好きです。

BACK INTO ENGLISH

I like the eyes of both men and women.

INTO JAPANESE

私は男性と女性の両方の目が好きです。

BACK INTO ENGLISH

I like the eyes of both men and women.