Electronic devices with removable light seals

A head-mounted device, comprising:

• a head-mounted housing configured to receive a removable light seal having left and right vision correction lenses;
• an optical assembly in the head-mounted housing that is configured to provide an image to an eye box;
• a rail along which the optical assembly moves;
• a motor configured to move the optical assembly along the rail;
• and
• a sensor configured to gather information from the removable light seal, wherein the motor is configured to move the optical assembly based on the information gathered by the sensor.

A head-mounted device, comprising:

• a head-mounted housing configured to receive a removable light seal having left and right vision correction lenses;
• an optical assembly in the head-mounted housing that is configured to provide an image to an eye box;
• a rail along which the optical assembly moves;
• a motor configured to move the optical assembly along the rail;
• and
• a wireless transceiver configured to gather information from the removable light seal, wherein the motor is configured to move the optical assembly based on the information gathered by the wireless transceiver.