This dye glows under ultraviolet light and will show the doctor if the virus is causing problems on the surface of the eye.

A breeze rustled the trees and caused ripples on the surface of the pool.

He tells her that Demeter is causing problems on the surface.

Its rays caused peculiar lighting effects on the surface of the small planet.

Most errors are caused by slag on the surface which is cooler than the salt bath.

These internal stresses cause stress cracks on the surface.

It caused the objects on the surface to rattle.

This is caused by the spreading of ink on the surface of the media.

It wouldn't even cause a ripple on the surface.

Unfortunately, they have come to inform them of mysterious forces causing trouble on the surface.