How to Understand if You Need Glasses
It is important to take care of the eyes and this sometimes means having to wear glasses. The most common sight defects are myopia, astigmatism, hypermetropia and presbyopia. Many people have some impairment of vision, but postpone the visit to the optometrist or do not go there at all. If you have the impression that your vision is getting worse, you should make an appointment as soon as possible. In addition to a reduced ability to see, there are other various clues that make you understand if you need glasses.
Evaluate the View from Far and Near
1) Check if the foreground objects seem blurred.
Close visual acuity could be a sign of hyperopia. If you struggle to focus on objects that are close to your eyes, you may be hypermetropic. There is no precise distance to which the object becomes blurred and which is equivalent to hypermetropia.
The severity of this visual defect affects the ability to observe objects at close range; the more you have to move something away to focus on it, the bigger your ametropia is.
Typical behaviours of a hypermetropic are: walking away from the computer screen and holding a book with arms outstretched.
2) Evaluate any problems with reading.
If you are used to working a lot at close range, for example, to draw, sew, write or type at the computer, but you realize that it is becoming increasingly difficult to concentrate on these tasks, then you may be lazy. This is a completely normal process, which involves the difficulty of focusing closely as one gets older.
You can do a check by simply holding a book in front of you to read normally. If you realize that the book is placed at a distance greater than 25-30 cm, you may be presented.
The same applies if you have to move the text further and further to distinguish the words.
In general, reading glasses are sufficient to solve the problem.
This vision defect usually develops between 45 and 65 years of age.
3) Check if distant objects appear blurred.
If you realize that objects lose sharpness as they move away, but all that is near is perfectly in focus, then it could be myopia. This ametropia, in general, arises during puberty but can manifest itself at any moment of life. Just like for hypermetropia, there are many levels of “gravity” even in myopia; if you can read a newspaper, but you can hardly see the blackboard at the back of the classroom or you realize that you have to get closer and closer to television, then you could be short-sighted.
There is evidence to show that children who spend a lot of time in activities that require close scrutiny, such as reading, are more likely to become short-sighted.
Environmental factors, however, have a lower incidence than genetic ones. 12 APRIL 2018
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4) See if you’re having trouble focusing on both far and near objects.
In some cases, instead of having a bad vision with objects near or far, you have problems focusing on all distances. If you notice that this happens to you too, know that you could be astigmatic.
Pay Attention to Blurry Vision, Pain, Dents and Abnormal Attitudes
5) Check the blurred vision.
If there are times when you see bad, then you should consider them very seriously. They could be a symptom of a wider health problem, for which it is necessary to make an appointment as soon as possible. If the blurred vision is an occasional phenomenon or concerns only one eye, go to the optometrist.
Blurry vision means the loss of image clarity and the inability to see the details of an object.
Evaluate if the problem occurs only with objects that are near, far apart or in both cases.
6) See if you have to squint to see well.
If you notice that you have to sharpen your eyes and squeeze your eyelids to focus on something and see it clearly, know that it is a symptom of some ocular problem. Try to understand how often you do it unintentionally and have an ophthalmologist visit you for a formal diagnosis.
7) Pay attention to diplopia cases.
Dual vision is caused by various factors of both muscle and nervous origin; however, it could also be a sign that you need glasses. Regardless of the origin, every episode of diplopia must be assessed quickly and seriously by an ophthalmologist.
8) Take note of every episode of a headache or eye strain.
If you have pain in your eyes or suffer from a headache regularly, then there may be some eye problems. Both disorders can be triggered after much time spent reading or doing work at close range, in this case, you could be presbyopic or hypermetropic.
This kind of visual defect is easily detected by an optometrist, so make an appointment to undergo a test.
The ophthalmologist may prescribe you a pair of glasses to suit your problem.
Observe the Reaction to Light
9) Check for any problems to see in the dark.
If you realize you have poor night vision, then you may suffer from an eye condition. The cause could also be the cataract, so if you notice a big difference between your visual acuity during the day and during the night you should go to the ophthalmologist.
Among the various difficulties, you may find some uncertainty when driving at night, or you may not be able to see in the darksome objects that are perfectly visible to other people.
Other indicators include the difficulty of seeing stars or going through dark rooms, like a cinema hall.
10) Take note of any difficulty in adaptation when moving from dark to enlightened environments and vice versa.
The times to get used to these changes, generally, increase with advancing age. However, if the problem becomes disabling and interferes with your normal activities, know that it is a sign of an eye disorder that could be corrected with glasses or contact lenses.
11) Observe whether or not you notice halos around the lights.
If you see bright circles that surround the light sources, such as light bulbs, then you may have some eye problems. Halos are very common among people with cataracts, but they are also the symptom of one of the four main eye conditions. You should make an appointment with your ophthalmologist for a diagnosis.
12) Pay attention to photophobia.
If you feel discomfort in the light and this disorder tends to get worse, then you should go to the eye doctor. This symptom could indicate many diseases, so it is necessary that an expert come to a conclusion. If the photophobia arises suddenly or is particularly severe, request an urgent visit.
If the light causes you pain, you notice that you squint or flicker every time you are exposed to light, then your sensitivity to this stimulus has increased.
Check the Home View
13) Use a printable optotype.
If you suffer from the symptoms described so far, you should not waste time and make an appointment at the ophthalmologist’s office for a checkup. However, you can test your visual acuity at home with some simple tests. Look for a printable table on the Internet that shows a series of increasingly smaller letters (optotype).
After printing the table, hang it on the wall of a well-lit room at eye level.
Back three meters and count how many letters you can see.
Continue to the last line or up to the smallest one you can read. Write down the number corresponding to the smallest row in which you can recognize most of the letters.
Repeat the test with both eyes, covering one at a time.
Results vary by age, but older children and adults should be able to read most of the 10/10 line.
14) Try to undergo some online tests.
In addition to the optotypes in printable format, there are many other tests you can do directly from the computer. Remember that these are not exams that provide a definite answer, but they give you some more information on the state of eye health. You can find specific tests for different eye problems, including colour blindness and astigmatism.
Generally, you must look at different images and shapes on the computer monitor and follow the instructions provided by the site.
Remember that these are rather vague tests, which give only an idea of the problem and should not be considered valid substitutes for medical supervision.
15) Go to an ophthalmologist.
Remember that if you display the symptoms described in this tutorial, you must make an appointment for a complete check. You will be subjected to a series of tests and examinations to understand the origin of your eye problems and, if you need glasses, the doctor will prescribe the necessary dioptres. Anything could scare you and intimidate you a little, but know that it is a fundamental step for the health of your eyes.
The ophthalmologist will use tools, point the lights in your eyes and ask you to look through a series of different lenses.
You will have to read the letters on the optotype with different lenses in front of the eyes.
Both the ophthalmologist and the optometrist can evaluate your visual acuity, but only the first can formulate diagnoses of eye pathology.
16) Learn about what you need to do in case you need glasses.
After the exam, your doctor will tell you if you need to wear corrective glasses or not, and if so, will give you the prescription. Bring it to the optician and choose the frame you like best. The optician is a professional who will help you choose the model that best suits your face and your visual needs.
Once you have chosen the frame, you will have to wait a week or two before the glasses are ready, then you can pick them up in the optical store.
Do not lie saying that you do not see letters because wearing glasses without really needing them can damage your eyes.
If you have to wear glasses, ask the optometrist when and how to take them.
Print or trace an optotype and then ask someone to help you evaluate your vision.