A ‣ A history of health technology
Ancient Egypt | The earliest crutches were in use. |
Middle Ages | Spectacles1, probably invented by Arab scientists, were used to correct vision2. |
1500-1600 | The first wheelchairs were developed. |
1800-1900 | 1804: the first general anaesthetic3 was used in an operation in Japan. 1896: X-rays4 were first used in medicine. |
1960-1970 | The first contact lenses5 were manufactured6. |
1 a more formal word for glasses
2 the ability to see
3 something used to make you unconscious when you have an operation, so that you do not feel any pain
4 a type of radiation that makes possible photographs of hidden objects such as bones and organs in the body
5 a small piece of transparent plastic which is worn on the surface of your eye to improve your sight
6 made in large numbers, usually in a factory
B ‣ The present day 
Medical technology has made rapid1 advances2 in recent decades3. Nowadays, a vast4 range of devices5 is available: people with hearing difficulties wear sophisticated6 hearing aids7; people with heart problems wear tiny pacemakers8. Artificial9 hips10 and knees are common, and are highly11 efficient. People who have lost an arm or a leg can have a prosthetic12 leg or a modern robotic13 arm and hand, which they can use to pick things up like a natural hand. Eyesight problems can be corrected by laser surgery14.
1 very fast
2 improvements or developments
3 a period of 10 years
4 very wide
5 object or machine made for a particular purpose
6 clever in a complicated way and able to do complicated tasks
7 a small device put inside someone's ear to help them hear better
8 a small device put inside someone's chest to help their heart beat correctly
9 not natural, a copy made by humans
10 the joint which connects the leg to the upper part of the body
11 very (more formal)
12 made to replace a missing arm or leg
13 able to be controlled and moved by the user
14 medical operations using powerful narrow beams of light
C ‣ The future
A recent TV documentary predicted the following developments in medical technology.
- Scanners which can identify health problems at an early stage1 will become more and more sophisticated.
- Diagnosing2 illnesses from a distance. Patients will sit at their home computers, describe their symptoms and send information automatically to their doctor (for example, their blood pressure3 or body temperature) using instruments such as thermometers connected to their computer.
- Computers and huge databases will provide doctors with more and more information and the tools4 to treat diseases.
- Keyhole surgery5 will become more common. It will not be necessary to cut open a person's body to operate on them.
1 during the first period of development
2 name the exact character of a disease or a problem, by exammmg it
3 measure of the strength at which the blood flows through the body
4 something that helps you do something
5 medical operations in which a very small hole is made in a person's body to reach the organ or tissue inside