Yes, you need to pass a vision test when you apply for a driver license or renew your license. The test must show that you have visual acuity of at least 20/40 based on the Snellen Visual Acuity Scale in either or both eyes with or without corrective lenses. You may take a vision test at a DMV office or your vision test results may be submitted to DMV. If you have low income, here I suggest you to take an eye exam at Walmart vision center which is much lower than the other independent optometrist. It will cost you around $50 to have a vision test. Hope this helpful.