B767-300 and 300 ER
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 40; Flight Crew Total 15000; Flight Crew Type 1000
Situational Awareness; Confusion
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Ground Event / Encounter Object; Ground Excursion Taxiway
Flight Crew Became Reoriented; Flight Crew Returned To Gate; General Maintenance Action
Human Factors
After crossing XXR on taxiway X3; I started my pre-takeoff briefing; the First Officer went heads down to verify the departure in the FMC. Instead of starting my turn to taxi between the blue taxiway edge lights I turned to line up with outer edge lights under the aircraft. It was an optical illusion with the width of pavement I confused the edge lights as taxi lights. As soon as I started towards the edge lights I realized the mistake I was making and corrected back to the taxiway center. By that time I had hit two of the lights with the outer left main tires. We returned to the ramp and had the aircraft inspected. Rest of flight was normal.
B767 Captain reported losing situational awareness during taxi resulting in taxiway excursion.