CHANGE: A Smartphone Eye Exam Service Launches in New York. “A service called Blink is launching today in New York that will bring an eye exam to your home or office for $75, administered by a technician who uses a trio of handheld devices that take the place of the bulky autorefractor, lensmeter, and phoropter you may have seen in an eye doctor’s office. The technician will send the results to an optometrist, who will write a prescription if necessary and e-mail it to you (in the U.S., only ophthalmologists and optometrists can legally write eyeglass prescriptions).”