Mesoamerican creation myths summoned the other gods, and together they decided to make man from wood. However, since these men had no soul and soon lost loyalty to the creators, the gods destroyed them by rain. Finally, man was constructed from maize, the Mayans staple and sacred food. The deity Itzamna is credited as being the creator of the calendar along with creating writing. Mesoamerican creation myths Mesoamerican creation myths are the collection of creation myths attributed to, or documented for, the various cultures and civilizations of pre-Columbian Mesoamerica and Mesoamerican literature. The Maya gods included Kukulkán (also known by the K'iche' name
Fixation disparity Fixation disparity Fixation disparity exists when there is a small misalignment of the eyes when viewing with binocular vision. The misaligment may be vertical, horizontal or both. The misalignment (a few minutes of arc) is much smaller than that of strabismus, which prevents binocular vision, although it may reduce a patient's level of stereopsis. A patient may or may not have fixation disparity and a patient may have a different fixation disparity at distance than near. There are several methods to quantify fixation disparity. The Mallett card, the Bernell lantern slide, the Wesson Card and the Disparometer may be used.