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Lens Implantation Surgery for Severe Myopia: Understand the Side Effects and Misconceptions Before Deciding

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2026.06.10

Lens Implantation Surgery for Severe Myopia: Understand the Side Effects and Misconceptions Before Deciding

For those considering lens implant surgery for severe myopia, the most frequently searched keywords are "Side effects of lens implantation surgery" and "Misconceptions about lens implantation surgery.

For high myopia of -8 diopters or more, the discomfort of thick, heavy glasses, along with distortion and visual strain, often leads many to consider lens implantation surgery as an alternative. However, many hesitate after encountering misunderstandings without access to accurate information.


Today, we will clarify the common side effects and misconceptions surrounding severe myopia lens implant surgery.

Severe Myopia: Why Consider Lens Implant Surgery?

Severe myopia requires a high degree of correction, which can lead to excessive corneal tissue removal during laser eye surgery. Posterior chamber lens implantation is often recommended as a safer alternative in these cases.

By inserting a special lens inside the eye without removing corneal tissue, this surgery provides a wider range of high-diopter correction. This is why many seek this procedure to escape the burden of thick glasses.

Lens Implant Side Effects: Precision Design Determines Safety

The concern for "side effects" always follows lens implant surgery. Elevated intraocular pressure, glaucoma risks, and the possibility of cataracts are terms easily found in search engines.

However, the core of these side effects rarely stems from the danger of the surgery itself, but rather whether a the lens is properly designed to fit the shape of the eye. 

• Is the internal eye space (anterior chamber depth) sufficient?

• Is the lens size appropriate?

• Is the distance to the crystalline lens safe?

• Is the aqueous humor circulation smooth?

In other words, when detailed preoperative examinations are used to analyze the eye’s structure in high myopia lens implantation, the risk of side effects can be systematically managed.

Two Most Crucial Factors in Severe Myopia Lens Implants

Confirming Eye Space

Adequate space inside the eye for the implanted lens is essential. If there is not enough space, it can affect the flow of aqueous fluid and may lead to increased intraocular pressure. Therefore, before high myopia lens implantation, the anterior chamber depth and overall eye structure must be carefully and precisely measured.

Determining Lens Size

Determining the exact lens size is key to minimizing side effects. An oversized lens can compress the iris, while an undersized one may lack stability. Precise calculations tailored to your eye's size and structure are paramount.

Common Misconceptions About Severe Myopia Lens Implants

Can the lens never be removed?

Posterior chamber lens implantation is structurally designed to allow for lens removal or replacement. This reversibility is one of its defining advantages.

Does the lens move around inside the eye?

The lens is positioned in the space behind the iris and in front of the crystalline lens. When appropriately sized, it is not designed to move arbitrarily.

Will it worsen dry eye syndrome?

Because there is no corneal cutting, nerve damage is relatively minimal compared to laser surgeries. However, depending on the individual's tear film, temporary initial dryness may occur, highlighting the need for thorough preoperative evaluation.

The Criteria for choosing high myopia lens implantation surgery are clearly defined

Having severe myopia does not mean you are out of options. Various vision correction methods, including lens implants (ICL, EVO ICL), are available today. What matters most is making suitability judgments based on precise testing, rather than relying on misconceptions about side effects.

• Eye space measurement

• Precise lens size calculation

• IOP (Intraocular Pressure) and glaucoma risk evaluation

• Crystalline lens condition check

When this systematic process is followed, severe myopia lens implantation is a highly viable option. If you are considering a consultation in the Jamsil area of Seoul, it is crucial to verify whether the clinic prioritizes precise measurement and structural analysis.

BGN Eye Clinic Jamsil

BGN Eye Clinic Jamsil guides patients through a comprehensive analysis of eye space, lens size, and IOP risk factors prior to surgery. Ultimately, safety is determined not merely by the "surgical method," but by precision design and thorough suitability assessment.

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