Monson small-incision lenticule extraction fixation device.

Small-incision lenticule extraction (SMILE) is a stromal based, flapless, minimally invasive form of laser vision correction for the treatment of myopia and myopic astigmatism. SMILE surgery is a more technical procedure compared with other refractive surgeries and generally has a longer skill mastery acquisition period. Thus far, no new stabilization devices or techniques have been proposed.

Configural features of helmet-mounted displays to enhance pilot situation awareness.

Background: In the current research, we used configural displays to investigate what design features contribute to the formation of operator situation awareness (SA). Configural displays have been shown to provide better performance for integration tasks, yet the design aspects of these displays which affect the formation of operator SA have not been determined.

Objective: We compared the design features of three configural attitude head-up displays (HUD) [joint strike fighter (JSF), dual articulated (DA), and arc segment attitude reference (ASAR)] presented on a helmet mounted display (HMD) across four experiments to quantify what aspects of configural displays would affect pilot SA.