Glaucoma Flashcards

1
Q

What is it

A

Group of eye diseases cause increased intraocular hypertension

Damages optic nerve -> blindness

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2
Q

Anterior chamber made of

A

Corner to iris

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3
Q

Posterior chamber is

A

Iris to lens

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4
Q

Vitreous chamber

A

Lens to back of eye

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5
Q

Anterior and posterior chambers are found in

A

Anterior of the eye

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6
Q

Vitreous segment found where

A

Posterior of the eye

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7
Q

Anterior of eye filled with

A

Aqueous humour

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8
Q

Posterior eye filled with

A

Vitreous humur

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9
Q

What secretes aqueous humour

A

Ciliary epithelium

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10
Q

Aqueous humour route

A

To aqueous veins to episcleral venous system to sclera

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11
Q

Glaucoma does what

A

Blocks drainage system causing intraocular hypertension

Affects optic nerve

Vision loss

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12
Q

Types of glaucoma

A

Open angle
Closed angle (narrow)
Low pressure

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13
Q

Open angle glaucoma features

A

Drainage clogged
Increase pressure
Outer rim atrophy
Peripheral vision loss

Pressure leads to damage of optic nerve so central vision lost too

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14
Q

closed angle glaucoma

A

Angle between iris and cornea too small
Aqueous humour can’t flow
Drainage blocked so pressure builds

Abrupt eye pain, redness, blurry vision,headache,nausea, seeing halos

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15
Q

Normal tension glaucoma

A

Aetiology unknown
Damaged optic nerve due to hypoperfusion

Genetic hypersensitivity at normal pressures

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16
Q

Diagnosis

A

Tomomemtry To assess pressure

Visual field testing

Look for optic nerve damage
Imaging

Look for cupping in optic nerve

17
Q

Curebale?

A

No but can be slowed down

18
Q

Treatment

A

Decreased aqueous humour to releave pressure - beta adrenergic agonist /carbonic anhydrase inhibitor

Increase our flow of aqueous humour
Prostaglandins analogue

Decrease production and increase outflow

19
Q

Trabeculoplasty is

A

Laser treatment for open angle

20
Q

Iridotomy is

A

Laser treatment for closed angle

21
Q

Other laser treatment

A

Destroy humour producing cells

22
Q

Implants

A

Stunt fluid ut of anterior chamber