Eyes

Question 1

What are the functions of the eyes

Answer 1

The eyes scan our environment constantly taking in rays of light produced or reflected from objects. We can see detail and colour, judge speed and distance.

Question 2

When does the iris change size?

Answer 2

It changes depending if there is light or dark

Question 3

Structure of the eye

Answer 3

Light is reflected by objects we look at and travels rays into our eyes.
When we view distant objects the light travels in almost parallel lines so there is little need for refraction (bending) to focus them on the light sensitive surface at the back of the eye.

Question 4

What is AMD

Answer 4

An eye condition (age related muscular degeneration)

Question 5

Diagnosis for AMD

Answer 5

Test vision and examine retina look for yellow deposits under retina

Question 6

Treatment for AMD

Answer 6

There is no treatment but vision aids can help reduce the effects on your life

Question 7

Effects of AMD

Answer 7

• blurred/ distorted vision
• struggle to see in the middle of your vision
• objects looking smaller than usual
• colours seeming less bright than they used too
• hallucinations
• effects the cones in the back of the eye (colour)

Question 8

What is cataracts?

Answer 8

Dysfunction condition of the eye. Cataracts occur when changes in the lens of the eye cause it to become less clear

Question 9

Effects of cataracts

Answer 9

• blurry vision
• driving at night becomes difficult
• increased difficulty with vision at night
• need for brighter light for reading
• seeing halos around light
• fading or yellowing of colours

Question 10

Cause of cataracts

Answer 10

Develops when ageing or injury changes the tissue that makes up your eye lens. Some inherited genetics disorders that cause other health problems can increase your risk of cataracts. It can also be caused by other eye conditions, past eye surgery or medical conditions such as diabetes

Question 11

Treatment of cataracts

Answer 11

Cataracts surgery or laser eye surgery. They remove the lense and replace it with an artificial lense

Question 12

What is glaucoma?

Answer 12

An eye condition where the optic nerve, which connects your eye to brain, becomes damaged. It can lead to loss of vision

Question 13

Cause of glaucoma

Answer 13

Occurs when the fluid in the eye cannot drain properly, which increases the pressure. It generally affects people who are elderly

Question 14

Symptoms of glaucoma

Answer 14

• severe eye pain
• nausea and vomiting
• sudden onset of visual disturbance, often in low light
• blurred vision
• halos around the light
• reddening of the eye

Question 15

Treatment for glaucoma

Answer 15

• eye drops
• laser treatment
• surgery