Translation of "Discernir" in English

Tom tiene problemas para discernir distancias.

Tom has trouble judging distances.

Intentamos discernir las letras escritas en la pared.

We tried to make out the letters written on the wall.

No es tan estúpido como para no poder discernir lo correcto de lo incorrecto

He is not so stupid as to be unable to tell right from wrong.