Origin of the Eye

The origin of the eye is intimately linked to embryonic development, particularly on the eighth day, when the amniotic cavity begins to form. This cavity, essential for eye development, emerges from the diencephalon, a structure derived from the third ventricle. During this phase, the neural system receives primitive amniotic fluid, which transforms into cerebrospinal fluid (CSF), enclosed within the neural tube. This process is crucial, as it lays the foundation for the formation of the primitive vesicles that will give rise to the eye.

The dynamic between the amniotic cavity and cerebrospinal fluid is fundamental for the balance of the eye, which seeks to maintain harmony between internal and external space. Zone B, a remnant of the amniotic cavity, houses this fluid, while Zone A represents the central axis of the body. The ectoderm, at this stage referred to as the epiblast, also plays a key role in structuring the eye and brain. Imbalances in this relationship can have repercussions on eye position, revealing information about an individual's state of balance. Pathologies such as diabetes or heart disorders can manifest as ocular abnormalities, highlighting the importance of the neural crest in body organization.