a simple vista

to the naked eye

a simple vista(ah seem-pleh bees-tah)

phrase

1. (without the help of devices)

a. to the naked eye

A simple vista este baño parece estar impecablemente limpio. Sin embargo, bajo una lupa se ven todos los microbios escondidos aquí.

To the naked eye this bathroom seems to be impeccably clean. However, under a magnifying glass you can see all the germs hidden here.

2. (at first impression)

a. at first sight

Tal vez no se note a simple vista, pero si te fijas bien verás que este cuadro tiene una imperfección.

You may not notice it at plain sight, but if you pay attention you'll see this painting has an imperfection.