The Eye Flashcards
What protects the eyeball
The sclera
What is the black dot at the centre of the eye which is a hole that lets light enter through the eye
The pupil
What is the coloured part of the eye that surrounds the pupil and controls how much light enters the eye by changing the size of the pupil
The iris
What is the clear window at the front of the eye that covers the iris and pupil
The cornea
What part of the eye is located at the back of the pupil, acts like a camera lens by focusing light onto the retina at the end of the eye
The clear lens
What is a light-sensitive inner lining at the back of the eye
The retina
What happens in a cataract operation
-the lens inside the eye that has become cloudy is removed and replaced with an artificial lens
Does cataract surgery require an overnight stay in hospital
No
What effect might cataracts have on health and well being
- the elderly can find it hard to adjust to sight loss
- it means that the elderly will need to rely on more people and lose independence
What does AMD stand for
Age Macular Degeneration
What are the 2 types of AMD
Wet and Dry
What are the symptoms of AMD
- blurring of your central vision
- lose ability to see fine detail
- lose contrast sensitivity (ability to distinguish between objects)
- images can become distorted in the centre
What are the causes of AMD
The exact cause isn’t known, but the condition develops as the eye ages
How is AMD diagnosed
- after a referral
- an ophthalmologist will examine the eyes
- they will use eye drops
- carry out a series of tests to confirm a diagnosis
What is the treatment for AMD (dry)
- try magnifying lenses
- there is some evidence that vitamin A diet may slow progression
