。
The eyes say as much as the mouth.
Literal
Eyes [topic-は] mouth [extent-ほどに] things [obj-を] say.
A famous Japanese proverb: 目は口ほどに物を言う. ほどに ('to the degree of') marks the comparison — eyes communicate as much as speech. 物を言う ('say things') is a set phrase meaning 'be expressive, have an effect.'