The best replacement for one eye is two eyes.

The best alternatives to one eye are rated as following:
★★★★★  two eyes

Your alternative for one eye is not listed? Suggest!
Speaking about one eye, one probably shouldn't forget about double vision.

Other search terms related to one eye and their ratings are:
★★★★★ double vision
★ blurred vision
★ squinting
You have in mind a companion for one eye and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of one eye in all years. Click on graph for more.
one eye
two eyes