Abstract

Morphometric Study of Orbitary and Periorbitary Region in Peruvian Skulls: Importance to Surgical Approach

Background: The orbit is a conical structure where lies the elements that allow vision. The volume of the orbit and the distances between its reference points vary depending on race and sex, so there are different values determined around the world. Methods: Sixty adult human dried skulls from the collection of the Department of Morphological Sciences, San Marcos, Lima-Peru; were used in the present study, on request and authorization. The orbital and periorbital region were measured bilaterally using Digital Vernier Caliper “Onogal”® and the volume of orbit was determined in ml, using a modified method of displaced volume. Results: Significantly lower values were found in the medial wall from the left eye (Student's T-test, p=0.01), specifically in the distance from the Anterior Lacrimal Crest (ALC) to the Anterior Ethmoidal Foramen (AEF). Also, the lateral wall presented lower values (p=0.01) in the distance from Zygomatico Frontal Suture to the Lacrimal Fossa (ZFS-LF). Conclusions: Measurements of a medial and lateral wall from the Peruvian skulls were lower in the left orbital region, compared with the right side; and volume measurements are similar to findings from previous studies in Asian skulls. The similar genetic traits between Asian and Amerindian (Quechua-Aymara) races could explain these findings.

• Full-Text
• PDF