The eye has three layers: the fibrous (sclera and cornea), vascular (choroid, ciliary body, and iris) and the sensory or neural layer (retina). The fibrous layer is involved with protecting and lubricating the eye and the cornea is the light bending apparatus of the eye. The vascular layer is involved with obviously nutrients, oxygen and eliminating metabolic waste, as well as anchoring the extrinsic muscles of the eye. The sensory layer is involved in vision and visual processing.
As well, the eye has two compartments, one containing aqueous humor (more along the lines of water) and vitreous humor (more along the lines of blood plasma). The compartment with aqueous humor is in the front, between the cornea and iris and iris and lens. The posterior compartment is in the 3rd layer of the eye and contains pretty much what you are born with and live with for the rest of your life. It is a closed system and there is a lot of theory on why people get cataracts within this par of the eye.
The anterior compartment actually uses a Na/K pump to move out metabolic waste and in nutrients and oxygen. The cornea and sclera play a role in this and actually mesh into the second layer that anchors the 6 extrinsic eye muscles. So to make a long story short, if one has trigger points, a CN dysfunction with CN3, 4 and 6, as well as imbalances in these eye muscles from postural distortions, mental/emotional issues, etc, this can cause increase pressure on the 1st and 2nd layer of the eye and the anterior compartment (this is where glaucoma happens secondary to waste not being eliminated). AS well, the extrinsic eye muscles can create blurred vision, altered vision and so forth if there is an imalance in them.
What to do:
1. Get a CHEK Level 3 or 4 assessment (www.chekinstitute.com)
2. Neuromuscular Therapy (specific type of soft tissue work) to the extrinsic eye muscles, as well as any other that affect the cranium, entire c-spine and so forth.