Fear in the neck conflict of a predator.
Both eyes are always involved. Each eye has a partner side and a mother or child side.
HH in paramedial visual cortex, interhemispheric right for the left vitreous hemispheres.
Partial opacification of the vitreous humor so that the predator (danger) is virtually obscured, but the view forward to the escape route remains unobstructed. In contrast to lens opacification (cataract), which results in the pcl-phase, vitreous opacification occurs in the ca-phase.
Decrease of vitreous opacity and vitreous edema (glaucoma formation = pressure increase inside the eye). Often, the edema pushes backwards through the entrance hole of the optic nerve. Neither in the ca- nor in the pcl-phase one may work here with laser, since one destroys thereby the vitreous body irretrievably.
ATTENTION: also here complications by syndrome if the glaucoma becomes too strong.
The pursuer in the neck is optically obscured, e.g., the rabbit then reels off its hacking program undisturbed, which brings at least a 10-fold improvement in the chance of survival, which it would not have if it looked up at the pursuer.
Partial clouding of the left vitreous body halves (“blinker phenomenon,” quasi partial “fogging” of the backward vision). The sense is that with the usually to the side looking eyes of the so-called prey animals, the danger from behind is quasi fogged or covered, therefore also only a part of the vitreous body is clouded (“blinker phenomenon”). The so-called predators can afford to look with both eyes forward because they have to be afraid of a predator to a much lesser extent. The human being is biologically seen as half prey animal, half predator.