Cataract and Cataract Surgery Flashcards Preview

BRB-2 > Cataract and Cataract Surgery > Flashcards

Flashcards in Cataract and Cataract Surgery Deck (12):
1

What is a cataract?

Any clouding of the eye's crystalline lens

2

What are some common symptoms of cataracts?

Blurry vision
glare
haloes around lights at night
dull colours/ yellowing
frequent eyeglasses script changes

3

What causes cataracts?

Aging
diabetes
family history
ocular trauma/surgery
UV
Steroids
Ocular inflammation (iritis)

4

What can protect against cataracts?

Excessive sunlight
No vitamins /anti oxidants

5

What are the most common types of cataracts?

Nuclear sclerosis
Posterior subcapsular
Cortical
Mature white
Hypermature (morganian)

6

When should cataract surgery be contemplated?

Only when the patient feels that the lack of vision is interfering with their quality of life or ability to perform daily activities

7

What cases warrants immediate cataracts surgery?

Congenital cataracts which should be removed in the first few weeks of life, or the damage could be significant

When it's causing iritis or glaucoma
When it's preventing treatment of retinal disease

8

Can cataracts be removed with laser?

Femtosecond laser assisted cataracts surgery is here

9

Define phacoemulsification

An ultrasonic energy pulse that breaks up the cataract into small pieces

10

What are possible complications of phacoemulsification?

Infection (1:1000)
Suprachoroidal hemorrhage (1:1000)
Retinal detachment (1:100)
Glaucoma
Macular edema
Posterior capsule opacification

11

What causes posterior capsule opacification?

Proliferation of cells left behind form surgery that migrate to the posterior capsule

12

How is posterior capsule opacification treated?

YAG lase capsulotomy

Risks: 1% retinal detachment, Macular edema, transient increase in IOP