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(주)지원메디칼

Keep your existing IOL —
add the vision you need with 1stQ AddOn

Add + Vision

  • 1stQ AddOn
  • About Cataract
  • News
  • Find a Clinic

서울특별시 강남구 언주로 71번길 30 지원빌딩Tel 02-542-1226

Fax 02-548-9958Email jiwon01@jiwonmedical.co.krHours 09:00 - 18:00

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About You IOL

Same surgery,
different results

Cataract surgery replaces the clouded natural lens with an intraocular lens.
Which lens you receive shapes your life after surgery.

Cross-section of an eye with an intraocular lens

What is a cataract?

When the natural lens turns cloudy, light can no longer reach the retina clearly and your vision becomes hazy, as if in a fog.
Because the lens itself has changed, new glasses cannot make your vision sharp again.

  • A living room that looks hazy and blurred
    Cloudy vision
  • Sunlight and headlights spreading into glare while driving
    Glare · halos
  • Fruit on a table that looks washed out
    Faded colors
  • A blurry road seen while driving at night
    Poor night vision
  • An older man lifting his glasses to read a newspaper
    Aging (most common)
  • A middle-aged man checking his blood sugar
    Diabetes and other conditions
  • A man wearing an eye shield at an eye clinic
    Injury · after eye surgery
  • A hat, sunglasses and a pill bottle in the sun
    UV light · certain drugs

Cataract surgery, step by step

  1. Anesthetic drops being placed in the eye

    Step 01

    Anesthetic eye drops

    Local anesthesia is given with eye drops.

  2. A tiny incision being made in the cornea

    Step 02

    Micro-incision in the cornea

    Instruments are inserted through a tiny incision.

  3. The clouded lens being removed with an ultrasound instrument

    Step 03

    Removing the natural lens

    The clouded lens is broken up with ultrasound and removed.

  4. An intraocular lens being implanted

    Step 04

    Implanting the IOL

    The folded lens unfolds inside the capsular bag.

Lenses used in surgery come in different types

Cataract surgery replaces the removed natural lens with an intraocular lens (IOL).
The type of lens you receive shapes your life after surgery.

How can I find out which lens I have?

Check the surgical record from the clinic where you had surgery, or ask during a consultation.
If you still have the materials you received at the time, review them as well.

  • A window view where the distant scenery is sharp and the nearby book is blurry

    Monofocal IOL

    The most widely used

    A lens designed to focus at a single distance.
    It is usually set for distance vision, and glasses cover near vision.

  • A window view where both the distant scenery and the nearby book are sharp

    Multifocal IOL

    Covers multiple distances

    A lens designed with multiple focal points.
    Choosing it requires a separate consultation and examination.

Is your vision cloudy again after surgery?

  • Posterior capsule opacification

    Cells grow on the capsule that holds the IOL and make it cloudy.
    This is not the cataract coming back.

    Cross-section of an eye with laser light passing through the lens capsule

    If your vision was clear for a while and slowly became blurry again

    It can be treated with a YAG laser

  • Residual refractive error

    The lens is clear, yet your vision still feels blurry.
    It is not clouding — some distances are simply not covered by the implanted lens.

    Cross-section of an eye with an AddOn lens in front of the existing IOL

    If certain distances have felt blurry ever since surgery

    Consider the 1stQ AddOn® lens,
    added in front of your existing lens

Instead of replacing your lens,
you can add one

Learn about the 1stQ AddOn® lens,
added while your existing IOL stays in place.

1stQAbout 1stQFind a Clinic

Frequently asked questions

The usual guideline is when declining vision makes daily life inconvenient, and your doctor makes the decision.

Usually one eye at a time with an interval in between, depending on your doctor’s judgment.

Vision brightens right after surgery, but final vision is usually confirmed after several weeks to a few months.

Most people return to daily life within a few days, though recovery speed varies.

The removed lens cannot develop a cataract again; posterior capsule opacification is a separate condition.

Yes — a lens can be added while your existing lens stays in place.

Learn about the 1stQ AddOn®