Presbyopia..Suddenly Uninvited Guest (feat. The Truth of Presbyopia Surgery)

Presbyopia..Everyone has a moment when the text on the smartphone, which was normally visible, becomes increasingly blurry, and when they look at the cellphone from a distance without knowing it, it comes to everyone.

Is it because your eyes are tired? Is it a cataract? Is it dry eye syndrome?

I bought a magnifying glass at a nearby optician’s store and carried it for a few days, but it was so inconvenient that I just stayed with it.

People around me say that “presbyopia surgery” is so good.

Today, we would like to learn about “presbyopia,” which begins in the early 40s.

Let’s take a look at why presbyopia occurs, why it can’t be prevented, and what kind of surgery is the most popular presbyopia surgery these days.

What is presbyopia?


Presbyopia can be defined as “an eye disease caused by a decrease in the elasticity of the lens and a decrease in accommodative power with aging .”

What is a lens?

The lens is the part of our eye that acts as the lens for the camera .

lens egg
The role and location of the lens

The lens is located at the front of the eye and is a convex lens that collects light entering the eye and focuses it on the retina, a film .

Lens, structure and function. the lens of our eyes

Presbyopia is a disease in which the elasticity and control of the lens are lost.

Then , what is the elasticity and control of the lens, and what does it do?

The elasticity and control of the lens

Healthy people can usually see clearly both near and distant objects . In other words, it focuses well at both far and near.

This autofocus automatically and continuously performs a series of “adjustments” in order to see a clear image in the eye , regardless of our will.

Presbyopia Principle
conditioning process

In order to deliver a clear image to the retina (film), objects at a distance have a thin lens, and objects at a distance have to thicken .

Because the lens cannot change its thickness on its own, the muscles that hold it around help.

The elastic lens is controlled by the process of thinning when the surrounding muscles pull on it and thickening when released .

Two conditions are necessary for this regulation to work well.

  • Adequate elasticity of the lens
  • strength of surrounding muscles

Presbyopia is a disease that occurs with aging and both functions decline due to aging .


The lens, which acts as a lens in the eye, uses its elasticity and the control power of the surrounding muscles to focus and see objects at a distance. As we age, the elasticity of the lens decreases, and the strength of the surrounding muscles weakens, making it difficult to see objects at close range.

Presbyopia symptoms

The elasticity and accommodative power of the lens begin to decrease from the early to mid 40s . Therefore , symptoms often begin to appear in the 40s .

Usually , near (near distance) blur is difficult to see, and you experience a slow shift in focus when you alternately look from near to far.

Seeing at close distances puts a lot of strain on your eyes, which makes your eyes tired easily and you may have a headache .

If you were originally wearing glasses for nearsightedness, you will need to take them off to see better at close distances.

Diagnosis of Presbyopia

Check the person’s symptoms and make sure there are no other causes of poor vision, such as cataracts.

“Presbyopia” can be diagnosed when there is no other cause, there is a difference between near and far vision, and there is improvement when wearing a magnifying glass .

treatment of presbyopia

Presbyopia is not a fatal disease to eyesight, but one of the natural aging phenomena, so we select a treatment that suits the patient’s situation .

Choose a method that achieves maximum effect with minimum treatment.

  • glasses prescription

  • presbyopia keratoplasty

  • Presbyopia Cataract Surgery

There is a degree.

glasses prescription

It is the simplest, most effective, and free treatment with no side effects .

Presbyopia is a condition in which the accommodative power of the lens has decreased compared to normal, and you can wear a magnifying glass that has the same intensity as the decreased accommodative power.

Magnifying glass prescription in presbyopia

The power of the magnifying glass should be prescribed with the minimum power without discomfort in consideration of the individual’s short-distance work propensity (how close to look), age, and arm length to reduce dizziness or discomfort.

If a patient who used to wear long-distance glasses for nearsightedness may receive separate prescriptions for distance glasses and near magnifying glasses , or to prescribe bifocal (multifocal) glasses with two powers at once.

However, in the case of multifocal glasses, it is recommended to make a decision through sufficient consultation as it takes adaptation and may cause severe discomfort such as dizziness depending on the user.

presbyopia keratoplasty

Keratoplasty is an operation that corrects refraction by changing the shape of the cornea, such as LASIK or LASEK.

Presbyopia cannot be corrected with LASIK or LASEK, which corrects myopia by removing a portion of the cornea.

presbyopia surgery
presbyopia keratoplasty

There are corneal inlay surgery, which inserts a thin lens inside the cornea , or high-frequency thermoplasty, which increases the refractive power of the central part by applying heat to the periphery of the cornea .

However, both procedures are invasive and not effective, so their use is limited .

Presbyopia Cataract Surgery

Cataract refers to a phenomenon in which the lens becomes cloudy due to aging, and cataract surgery refers to surgery in which the cloudy lens is surgically removed and then an artificial lens is inserted in its place .

Cataract surgery process (after anesthesia) – All about cataract (Part 6)

Unlike our natural lenses, IOLs do not have elasticity and control , so if you focus on a distance during surgery, you will not be able to see well at a close distance.

Compensating for these shortcomings is the “multifocal intraocular lens”, which is a lens with focus both at far and near distances .

Therefore, if you have a cataract, you can correct presbyopia by inserting a multifocal intraocular lens instead of a regular intraocular lens during cataract surgery.

multifocal intraocular lens

As shown in the figure, unlike ordinary intraocular lenses that consist of a single refractive power, multifocal intraocular lenses can focus at both near and far distances by changing the refractive power in multiple steps.

However, these multifocal IOLs are not without their advantages. Complications that are not often seen with ordinary IOLs, such as light blur, dizziness, decreased sensitivity, darkening, and halos, are more likely to occur .

Therefore , multifocal intraocular lens cataract surgery, often referred to as presbyopia cataract surgery, should be decided after sufficient consultation between the patient and the doctor .

Prevention of presbyopia

Various media have introduced many methods such as eye exercises to prevent presbyopia, nutritional supplements such as lutein, and eye exercise equipment.

“Lutein for Macular Degeneration” – Do not eat only lutein (Part. 6)

However , there is no medically proven method to prevent presbyopia .

Therefore, it is thought that the best prevention is early detection and appropriate treatment.


Presbyopia is a condition that occurs as the lens in the eye deteriorates with age and the ability to focus decreases.

Mainly, there are symptoms such as blurred vision at close range, slow focus transition, and easy eye fatigue.

There is no medically proven prevention method, and the easiest treatment is to wear a magnifying glass.

Although there are surgical treatments such as presbyopia cataract surgery, there are side effects and complications, so it is recommended to make a decision through sufficient consultation with a specialist.

Learn more about presbyopia.

Thank you for reading this long post, and if you have any questions, please ask the community ^^

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