Glaucoma

Question 1

What is the aqueous humor

Answer 1

A liquid secreted from the posterior chamber to the anterior chamber that fill the space between the lens a the cornea and provides nutrient to the lens and the cornea.

Question 2

What is the pathophysiology in glaucoma

Answer 2

The aqueous humor does not drain properly (due to corticosteroids deposit, trabecular mesh work injuries or diabetes)

Question 3

What is a normal and what is a pathological pressure in glaucoma ?

Answer 3

Normal is 15,5

Pathological is 22 mmHg

Question 4

Why this pressure is armful ?

Answer 4

Circulatory disorder, the blood in sufficiently driven to the optical nerve and nerve fibers die

Question 5

Site three type of diagnostic means in glaucoma

Answer 5

Goldman Tonometer
Pneumotonimeter
Gonioscopy

Question 6

What is the principle of Goldman tonometer

Answer 6

Pressure applied with a stick to the cornea

Question 7

What is the principle of pneumotonometer

Answer 7

Déformation of cornea with a air steam

Question 8

What is the principle of gonioscopy

Answer 8

The angle of the anterior chamber is measured with a gonioscope but it is really inaccurate

Question 9

Site thé différent type for glaucoma treatment

Answer 9

Surgery - laser - pharmaceutical (beta blocker. Adrenalin)

Question 10

What is the glocoma valve

Answer 10

An implant for glaucome, when the pressure is too high the aqueous humor fills the tube and is then driven into a pokey and lead out the eye

Question 11

Describe system concept for implant

Answer 11

Pressure sensor in artificial intraoculaire lens
Transponder chip and micro coil on the non optical part of the lens
External télémétrie component into Googles
Combine drainage surgery with cataract surgery

The capacitance change of the pressure changes too (C(gesamt) = C0 + []C(p)