N.Y. Vehicle & Traffic Law § 404-A
4. Issue of plates. The commissioner shall issue sets of plates to such person in accordance with subdivision two of this section with proof of such disability of such person or such members of his or her family certified by a physician, physician assistant or nurse practitioner, to the extent authorized by law and consistent with subdivision three of section six thousand nine hundred two of the education law, or podiatrist pursuant to subdivision four-a of this section or optometrist pursuant to subdivision four-b of this section, to the satisfaction of the commissioner who is empowered to carry out the effects of this section by formulating rules and regulations. For the purposes of this section, a "severely disabled person" shall mean any person having any one or more of the following impairments, disabilities or conditions which are permanent in nature: