1. A method comprising: projecting light from a near infrared light source into a visible light illumination path of a fundus camera to form a near infrared illumination beam; spatially filtering the near infrared illumination beam to form an annular near infrared beam substantially overlapping an annular visible light illumination path configured to illuminate the fundus of an eye; tapping a portion of an annular near infrared illumination beam reflected from anterior and/or interior surfaces of an eye to form a tapped portion directed to a sensor that forms a near infrared image.