Figure 1.

Thermal windows assessed in the head. (A,B). In the orbital region (Regio orbitalis), the lacrimal caruncle was delimited with a circle (a1,b1), from the medial commissure of the eyelids up to half a centimeter toward the cranium. The periocular thermal window (circles (a2,b2)) extends above the upper and lower eyelid. The lower eyelid (a3,b3) was defined by a line of approximately 3 cm, from which the conjunctival irrigation can be assessed. In the skull region (Regiones cranii) (C,D), nostril, auricular, and frontal-parietal windows were delimited. The nostrils (c1) were marked by ovals. For the auricular evaluation (Regio auricularis), a circle was used to mark the auditory canal (d1). Lastly, the frontal-parietal region (Regio frontalis) was delimited by a circle (d2), a zone irrigated by cornual and supraorbital arteries.