Head-mounted display testing system

A system comprising:

• a head-mounted display (HMD) comprising (i) a housing having an external surface, (ii) a wireless transmitter, and (iii) a memory storing program instructions that, when executed by a set of processors of the HMD, performs first operations comprising:
• determining whether a set of criteria is satisfied based on eye-related readings collected by a camera the HMD;
• and
• wirelessly transmitting a set of messages via the wireless transmitter of the HMD in response to a determination that the set of criteria is satisfied;
• and
• an external attachment configured to attached to the external surface of the housing of the HMD and comprising (i) a wireless receiver and (ii) a set of light-emitting diodes (LEDs) to emit a light at a bleaching intensity, wherein the external attachment stores program instructions that, when executed by the external attachment, performs second operations comprising activating the set of LEDs to emit the light at the bleaching intensity in response to receiving the set of messages via the wireless receiver of the external attachment from the wireless transmitter of the HMD.

A method comprising:

• determining, with a head-mounted display (HMD), that a set of criteria is satisfied based on eye-related readings collected by a sensor of the HMD;
• wirelessly transmitting, with a wireless transmitter of the HMD, a set of messages in response to the determination that the set of criteria is satisfied;
• wirelessly receiving, with a wireless receiver of an external attachment, the set of messages from the wireless transmitter of the HMD;
• and
• activating, with the external attachment, a set of LEDs of the external attachment to emit a bleaching light in response to the wirelessly receiving the set of messages.