which greek base means eye?

1.neur
2.myel
3.phren
4.ophthalm

http://dictionary.reference.com/browse/ophthalm

The correct answer is number 4. 100% sure that is correct answer.

The Greek base that means "eye" is "ophthalm."

To determine the answer, we can break down each of the options and their meanings:

1. Neur: This Greek base means "nerve."
2. Myel: This Greek base means "marrow" or "spinal cord."
3. Phren: This Greek base means "mind" or "diaphragm."
4. Ophthalm: This Greek base specifically refers to the "eye."

Therefore, the correct answer is option 4, "ophthalm."