The difference between astigmatism and presbyopia

After people reach the age of 45, their eyesight will gradually begin to decline. Presbyopia is a problem that many middle-aged and elderly people are prone to. Similar to presbyopia is astigmatism. Obviously, when a similar situation occurs, it is necessary to understand the specific situation so that you can better solve the problem and choose the appropriate glasses. So, what is the difference between astigmatism and presbyopia? Let’s take a look below.

When people around 45 years old have declining eyesight and see things blurry, people naturally think of presbyopia.

The most common symptom of presbyopia is blurred vision when reading or doing other close work, which worsens year by year. It is well known that presbyopia is a normal physiological phenomenon. However, a considerable number of people have good eyesight when they are young, but when they reach the age of presbyopia, not only can they not see clearly at close range, but also see blurry images at a distance. After looking for a long time, they will feel sore and painful eyes, and even headaches. At this time, you should consider whether you have senile astigmatism.

People may not know much about presbyopia, but it is another important cause of blurred vision. This is because the upper eyelids of the elderly become loose, reducing the vertical pressure on the cornea (commonly known as the black pupil), making it relatively flat and the curvature smaller. The horizontal curvature of the cornea becomes relatively larger, making the black pupil no longer a perfect sphere. In this way, the parallel light rays entering the eye cannot be focused into a point after passing through the cornea and the refractive medium at the back of the eye, but can only form a line, causing symptoms such as double vision, decreased vision, and visual fatigue. This is the so-called presbyopia, also known as presbyopia against the rule.

Presbyopia requires correct glasses

If you have symptoms such as decreased vision and visual fatigue due to presbyopia, you need to wear glasses to correct it even if the degree is low. Most elderly people who have never worn glasses cannot accept full correction; they can try partial correction first and then transition to full correction.

If you are not suffering from myopia or hyperopia, you only need to wear simple astigmatism glasses to see distant objects; if you want to see close objects, you need to wear reading glasses that also incorporate astigmatism components.

After retirement, the elderly cannot do without reading and reading newspapers every day. Both presbyopia and astigmatism will cause inconvenience to their lives. Therefore, if they find that their vision has deteriorated and they see things blurred, they should go to the hospital for a check-up in time to see whether they have presbyopia or astigmatism. The right glasses can help older people return to a normal life.