Fluids Hypertension Syndromes: Migraines, Headaches, Normal ...

Fluids Hypertension Syndromes – Dr. Leonardo Izecksohn – page 91
IX) – Optic Nerve’s Lamina Cribosa Pores –
Visibility and Pathophysiology.
Contents
A – Physiology of the Healthy Optic Nerve’s Lamina Cribosa.
Scheme IX-1: Healthy eye without Migraines.
B - Pathophysiology of the Optic Nerve's Lamina cribosa pores and Optic Nerve’s disk cup.
Scheme IX-2: Optic Nerve’s fibers atrophy with visibility of the Lamina Cribosa pores.
Scheme III-2 (repeated here): Direct ophthalmoscopic view of Optic Nerve’s disk 0.7/3/3/0.
C – We had 388 patients with some visibility of the Optic Nerve's Lamina Cribosa Pores.
Scheme IX-3: Optic Nerve’s atrophy and visibility of the Lamina Cribosa pores with simultaneous
Edema of the remaining Optic Nerve’s borders.
D - Glaucomatous evolution of simultaneous Ocular Hypertension and Cerebrospinal Fluid Hypertension.
IX - A – Physiology of the Healthy Optic Nerve’s Lamina Cribosa: Physiologically, the healthy
human being presents some equilibrium between the intraocular pressure and the Cerebrospinal Fluid
pressure at the other side of the Optic Nerve’s disk and respective Lamina Cribosa (Scheme IX-1). At
head-up positions, the physiological intraocular pressure is between 10 and 16 mmHg, and the
Cerebrospinal fluid pressure is between zero (0) and 10 mmHg. These pressures are healthy to the eye.
Scheme IX-1: Healthy eye without Migraines: There is an equilibrium between the intraocular
pressure and the Cerebrospinal Fluid pressure at the other side of the Optic Nerve's Lamina Cribosa.
There is few (physiological) squeeze over the Lamina Cribosa, no damage nor Migraine.
Physiologically, at the seated position, the intraocular pressure is around 5 to 10 mmHg higher than
the cerebrospinal fluid pressure. Many etiologies (excessive water drank, caffeine, wine, beer, and others)
cause temporary rises and downs of the Cerebrospinal Fluid and the intraocular pressures, but not
simultaneously, breaking the equilibrium between them and stretching one side or the other of the Optic
Nerve’s disk and respective Lamina Cribosa. When one of this stretching pressure is too much
above or below the other, the lamina cribosa bows and aches as Migraines and all the other signs
and symptoms.
After expelling the excessive fluids from the body, all the pressures reduce and the Migraine finishes.