In future physicians can use implants LED to relieve your pain instead any a pill giving to patients.
Sometime very hard to maintain chronic pain by any physician, but researchers now found new technology to relieve your pain through an implantable electronic device in our body, which have feature to activate LED (light-emitting diode), it might be able to relieve your pain to switch on the LED.
Scientists have looked around the field of technology called optogenetics, it able to treatment for pain in the past. In previous versions they used external light sources which had to be attached to a part of the skeleton and limiting the circuits they were targeting to those near the skull.
In latest implantable system is made from thin, flexible material which is similar to those biological tissues. Scientists to understand the chronic pain, so they implanted device in a mouse's neural tissue without any harm. It's not only used for pain relief purpose, it could be used for the researcher's purpose for making better treatment.
Source: MIT Technology Review