When we go to the eye doctor for a check-up, we are often told that we have both presbyopia and astigmatism, or nearsightedness and astigmatism. What is astigmatism? Is it caused by nearsightedness or farsightedness? How can we treat astigmatism? This blog answers your questions.

What is astigmatism?

Astigmatism is the inability of parallel rays of light entering the eye to focus accurately on a single point, preventing the formation of a clear image. It occurs because the curvature of the eye's refractive tissue (mainly the cornea) is not a perfect sphere.

Astigmatism can be categorized into regular astigmatism and irregular astigmatism. Patients with regular astigmatism see images with a clear offset direction, while patients with irregular astigmatism see images that are a mess.

In addition to vision loss, astigmatism patients are also prone to visual fatigue. Visual fatigue

When you receive a pair of glasses from Eyecedar, you notice that there is a lens cloth in the case. So you assume that it is for wiping your glasses.

View this glasses case

When we are out and about, in a restaurant or a park, our

In just a few minutes, you can have a pair of glasses that are as clean as new.

A clean pair of eyeglasses helps us to see clearly, while improving our comfort and preventing them from harbouring bacteria that can cause eye infections. If you spend just a few minutes each day cleaning your glasses properly, you’ll be able to wear them for longer. Here are the full cleaning instructions:

1. Clean hands. It's important to make sure our hands are clean before cleaning our glasses. Wash your hands with a mild detergent and warm water to make sure they are free of

Mobile phones, computers, televisions - it is hard to avoid using electronic screens these days. Eye problems caused by staring at screens for long periods of time are also common. Dry eye is a very typical eye condition.

What is dry eyes?

Dry eye is not just a lack of water. The surface of our eyeballs is covered by a tear film that protects our eyes and helps us to see clearly. The presence of dry eye means that the tear film is incomplete - there is a lack of tears or the nutrients in the tears are not plentiful enough. As a result, the most noticeable symptom of the loss of tear protection is dry eyes. Eye fatigue, foreign body sensation, burning, eye pain and photophobia are also symptoms that often plague dry eye sufferers. The eye discomfort associated with dry eye can also affect the quality of our sleep, and studies have shown that this can lead to anxiety and depression. Worse still, if left untreated,

Have you heard the claim that wearing glasses makes myopia worse or irreversible? Many people use their own experiences to prove the truth of this theory. Is it really true? In reality, this statement is only true in certain situations. If you want to know exactly what is going on, read on. In this article, you will find answers to the questions "Should I wear glasses?" and "How can I prevent myopia from increasing?”.

Do I have to wear glasses if I'm myopic?

First of all, we need to understand that myopia is divided into pseudomyopia and true myopia. Our eyes have a self-healing function. After our eyes are overworked, it is possible for our eyesight to recover naturally

There are many people who believe that if they have myopia, they will not develop presbyopia as they age. Is this true? Actually, no, people who are myopia suffer from presbyopia as well.

Why myopia and presbyopia can't cancel each other out

Myopic eyes can't see clearly in the distance, and presbyopic eyes can't see clearly in the distance. Ostensibly, this is a math problem where the pluses and minuses cancel each other out, but the fact is that the causes of these two eye conditions are completely different and do not cancel each other out. Myopia occurs when the eye's axis lengthens, such as when the eyeball becomes oval or the cornea thickens. Presbyopia occurs when the lens in the eye loses its elasticity. Our eyes adjust focus by changing the thickness of the lens. Therefore, myopia is not cured by the appearance of presbyopia. On the contrary, people who already have myopia will not only be unable to

"You have one unread message!" Many people use their phones to process messages before bed. Some people like to use their cell phones while lying in bed, often on their side. Do you have this habit? Don't do it again! This will greatly increase your chances of developing strabismus. And in addition to potentially causing an increase in myopia, lying on your side and playing with your phone can lead to many other injuries.

The dangers of using a cell phone while lying on your side

When we look at a screen, the ciliary muscle is working hard. The ciliary muscle is a circular muscle inside the eye that changes the shape of the lens, much like a photographer adjusting the focus of a camera so we can see things far away or up close. When we look away, the ciliary muscle relaxes and the lens flattens out. When we look close, such as at a cell phone screen, the ciliary muscle must exert force to make the lens convex. If we look at something close

Have you ever heard of "Dopamine Dressing"? This colorful style craze lit up the summer of 2023 and continues to this day. You may have heard of it or even tried it, but did you know that Dopamine Dressing can also prevent myopia? To find out how, read on!

What is dopamine?

Dopamine is a chemical in our body that is used to transmit messages between various nerves in the brain, and is known as the "happy chemical" and "love messenger. In our eyes, dopamine is closely linked to light perception, retinal cell growth and other physiological activities. The presence of dopamine allows us to maintain clear vision.
Studies have shown that a lack of dopamine can lead to nearsightedness due to multiple eye growth. When the body lacks dopamine, the eyes' ability to adapt to changes in light is weakened and our eyes become more susceptible to damage from the external environment. Therefore, promoting the production of dopamine in the eyes

Have you ever heard of progressive lenses? Originating in France, these lenses have been around for many years and are popular with presbyopes around the world. The special lens design allows you to wear them not only to correct presbyopia, but also to maintain clear vision at different distances. Whether you want to watch TV while doing needlework or watch the dashboard while looking at the road in the distance, progressive lenses can satisfy you. Let's learn more about what progressive lenses are, whether you're a candidate for progressive lenses, and how to choose the right frames.

What are progressive lenses?

Progressive lenses are a type of multifocal lens. The biggest advantage of progressive lenses over monofocal and bifocal lenses is their convenience. Progressive lenses can be used at all distances - far, middle, and near - without putting on and taking off reading glasses. This makes them particularly suitable for people who need

Have you ever worn photochromic glasses? These glasses have lenses that are clear when you are indoors, and when you are outdoors, the lenses darken in color, making them look like sunglasses. When you go back indoors, the lenses return to their original color. Today we will discuss how photochromic lenses work and why we need them.

How do photochromic lenses work?
The chemistry behind the seemingly miraculous function of photochromic lenses is not difficult to understand. Photochromic lenses are made with a special chemical substance that undergoes a chemical change when exposed to sunlight, causing the lenses to darken in color. This chemical change is reversible, and when the light decreases, the substance releases its energy and the lenses return to their original color. Therefore, the rate and degree of color change of photochromic lenses