"The retina is like a sheet of cellophane attached to the entire back wall of the eye. The tears usually occur in the periphery where the gel may be tugging on it. If a tear occurs, then fluid inside the eye can travel through the tear and track between the retina and the back wall of the eye thereby separating the retina off the back wall of the eye. This is called a retina detachment. Wherever the retina is detached there is no vision. Since this usually occurs first in the periphery it may be experienced as a total loss of vision in the peripheral field of view as if a curtain is being pulled across the vision from the side and it may advance across the center of vision."
"The retina splits into two layers in certain areas. The retina is like plywood with many laminated layers which rarely separate. This is called retinoschisis."
"The retina is like an electronic circuit whose schematics have been lost, whose components have unknown specifications, and whose design is a matter of conjecture. Therefore my lab studies retinal components to determine their specifications, and integrates this knowledge into systems-level hypotheses about the overall design of the retina."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.