N.Y. Comp. Codes R. & Regs. tit. 8, § 67.4
(b) To qualify for a training permit for basic ophthalmic dispensing training, a candidate shall present satisfactory evidence of:
(c) To qualify for a training permit for contact lens fitting, a candidate shall present satisfactory evidence of:
(2) attestation by a licensed ophthalmic dispenser, physician, or optometrist that the candidate's training and experience program shall meet the requirements of sections 67.1(c)(2) and 67.2(b) of this Part and be under the supervision of a licensed ophthalmic dispenser, physician, or optometrist who shall be on site and readily accessible to provide personal advice and assistance to the candidate, when the candidate is receiving clinical training and experience.
(d) Duration.
A training permit shall be valid for a period not to exceed two years, or until 60 days after notification by the department that the education requirement for licensure has been met, whichever first occurs. At the discretion of the department, a permit may be renewed for one additional period not to exceed one year.
(e) Supervision.
A licensed ophthalmic dispenser, optometrist, or physician may supervise concurrently no more than one candidate with a training permit.