Eye Rhymes are words that look like they should rhyme but they do not. The words have similar endings but different vowel sounds and pronunciations. Some examples include comb and tomb, read and dead, cove and dove and wind and bind.

Sometimes rhymes in poems written centuries ago no longer rhyme today. They have become eye rhymes. This is not what the poet originally intended.

The Wikipedia entry for eye rhymes notes that some poems were written intending to rhyme centuries ago. Some of these rhymes have become eye rhymes over time due to changes in the way words are pronounced.

Wikipedia points out these lines from Shakespeare's Hamlet. Flies and enemies rhymed when Shakespeare wrote the lines, but it is an eye rhyme today:

"The great man down, you mark his favourite flies;
The poor advanced makes friends of enemies."

There is a pronunciation poem that points out many eye rhymes. The author of this poem is unknown.

"I take it you already know
Of tough and bough and cough and dough?
Others may stumble, but not you,
On hiccough, thorough, lough and through?"

Some of the eye rhymes in the poem include cough and dough, dead and bead, meat and great, fear and bear, goose and choose and heard and beard. You can read the full poem here. The poem also contains some words that do rhyme. Here is a video of the poem being read: