How A Vision Tester Works

By Marissa Velazquez


Vision tester refers to a machine used in the medical field. This facility has been used for such a long time. Many health facilities have them, though not all. It is most commonly found in health centers that mainly deal with treatment of the eyes. This equipment is usually operated by well trained personnel.

For instance, there are people who can only see objects which are at a close range and not those far away. Such people are termed as being myopic. This problem results from defective formation of an image of an object in vision. Instead of an image being formed on the retina, distant images in this case are formed in front of the retina. This thus results in blurred vision, resulting in the necessity of aids in vision or some form of medication.

The second problem is that one in which an individual can only see the distant objects. Unlike the individuals with short sight, people with long sight cannot see objects close to them clearly. This problem affects both the old and young people. When the machine is used to detect this problem, images are placed at different distances and the patient asked t identify the distance at which they can see the image clearly.

Having identified these complications, there are various options of treatment available. The medical practitioners thus select the kind of treatment that is considered most appropriate for every single patient. For the two problems above, the most common remedy is glasses. These glasses have lenses of different powers to suit different levels of complications. They are meant to aid in sight, while correcting the problem.

Other more complex forms of treatment include those such as laser treatment as well as surgery. These methods are quite costly. They however are only recommended in case where the sight problems are too severe to be corrected using glasses. Some people may however just resort to use them because they offer a rather permanent solution. Some of the complications such as aches may just be treated using some gels and eye drops.

There are a number of merits as well as demerits associated with this kind of equipment. There are some which are small in size. These ones therefore make portability from one place to another very easy. When conducting tests, the patients and the operator are not strained at all, making the exercise comfortable for both of them. Operation also does not require much skill.

However, some people who live in abstract poverty may not afford to use this machine. This is because some health centers may charge high amounts of money for the facility. Some of the operators are also the kinds who have not been trained well. These ones thus may lead to faulty diagnosis which in turn leads to wrong medication. Such cases have resulted in consequences as severe as death.

Vision tester is equipment that has helped very many people. More people are being trained on how to use it well. The machine is also now available in the smaller health centers. Most people have appreciated its role in the medical field.




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