‘Dr.Cool’ is an ocular rapid cooling anesthetic device that anesthetizes the eyeball in just 30 seconds. 1) Less Waste & simple to use Different from current method of injection, it reduces the waste syringe by using disposable tips. It is more sustainable, since the doctors don’t need to replace the whole syringe after using it. Doctors can easily change the disposable tip by just inserting it into the product. 2) Safe & Ease of Fear Since it doesn’t use any chemicals, it reduces danger of side effects. It also eases the fear of patient by not sticking a needle into the eyeball. Patients will feel more comfortable and stable during anesthesia. 3) Comfortable & stable to grip The Gun shape of a body gives affordance of grip. This shape helps doctor to anesthetize stably and accurately. The blue-colored parting of the handle also gives visual affordance by indicating to the doctor of the grip.