Laser Cataract Surgery: Everything You Need to Know

A patient being prepared for cataract surgery. Dennis Macdonald

Laser surgery for cataracts is the removal of a lens that has a cataract, followed by replacement of the lens in the eye with an artificial prescription lens. Not all cataract surgery is done by a laser these days. The procedure is safe and effective, but according to the American Academy of Opthalmology, laser cataract surgery is more costly than the traditional method, and the cost is not covered by most health insurance plans.

What Is Laser Cataract Surgery?

Laser cataract surgery is a surgical procedure in which a cataract, which is a cloudy lens in the eye, is removed and replaced with an artificial lens. There are several steps in this procedure, and they are done with a laser device.

A femtosecond laser is used to make an incision in the eye with the assistance of built-in optical coherence tomography (OCT) imaging, which produces a magnified, high-resolution image of your eye.

There are several steps in laser cataract surgery:

  • With phacoemulsification, ultrasound vibration at a high speed dissolves the cataract into tiny fragments that are gently suctioned out of the eye.
  • A capsulotomy is the removal of the lens. The capsule of the eye holds the lens, so it has to stay in place to hold the new lens that will be inserted.
  • After phacoemulsification and capsulotomy, the new lens is inserted.

Laser cataract surgery is performed by an ophthalmologist (eye surgeon). Pain control is achieved with intravenous (IV, in a vein) sedation and local anesthesia.

An OTC-equipped laser is used for laser cataract surgery, whereas a small blade is used to make the incision in the eye for traditional cataract surgery.


There are several contraindications to cataract surgery. And laser cataract surgery has additional contraindications.

You can't have cataract surgery if you have had previous corneal or glaucoma surgery. And you cannot have cataract surgery if you have scarring in your eyes or problems with the function of your pupils.

And there are certain guidelines that determine qualification for laser-assisted cataract surgery. You can qualify to have this procedure if your astigmatism will be corrected during your cataract surgery or if you need a special lens implant, such as a multifocal intraocular lens (IOL).

Potential Risks

There are some risks associated with this procedure. Adverse effects of surgery include bleeding, swelling, infection, or damage to the eye. Vision can be permanently affected if these complications are not effectively and promptly treated.

And sometimes a secondary cataract can develop several months after cataract surgery, potentially requiring treatment.

Purpose of Laser Cataract Surgery

Cataracts are clouded lenses in the eye that cause blurry vision. Cataracts are diagnosed with an eye examination. Removing a cataract and replacing it with a clear, artificial lens improves vision.

The decision to have a laser cataract surgery instead of traditional cataract surgery is based on several factors.

Advantages of laser cataract surgery:

  • Laser incision has been found to seal better than an incision made with a blade, which results in better healing.
  • In laser cataract surgery, less energy goes into the phacoemulsification process than with traditional cataract surgery, This reduces the risk of complications, such as damage to the capsule, bleeding, or retinal detachment.
  • Multifocal lens implants may lessen the dependence on corrective eyeglasses after surgery.

The selection of a laser method instead of a traditional method is not always clear cut. Some studies haven't found an advantage or disadvantage in terms of the complication rate or healing of a laser cataract surgery compared to a traditional approach.

How to Prepare

Because Medicare and many insurance companies don't cover the cost of laser-assisted cataract surgery for all indications, you might need to check with your health insurance payer to find out if your procedure would be covered.

In addition to your eye examination that detected your cataract, your doctor will look at the structure of your eye with a non-invasive eye exam by dilating your pupils. You will have blood tests, including a complete blood count (CBC) and blood chemistry tests.

You will also have a chest X-ray and an electrocardiogram (EKG) as part of your pre-surgical testing.


Your laser cataract surgery will be done in an operating room or a procedural suite.

This is an outpatient procedure. You will go to your appointment from home and you can go home on the same day as your surgery.

What to Wear

You can wear anything comfortable to your surgery appointment. Be sure to have your hair pinned away from your eye and not to have cream or makeup around your eye.

Food and Drink

You should be able to eat and drink as you normally do before and after your surgery.


Your doctor might ask you to stop or decrease your blood thinners in the days before your surgery. Sometimes, you might need to adjust other medications that you take as well.

What to Bring

You should bring a form of identification, your health insurance information, and a method of payment for any portion of your surgery that you will be responsible for paying.

You should also have someone with you who can drive you home after your surgery.

Pre-Op Lifestyle Changes

You shouldn't have to make any changes in your lifestyle before your laser cataract surgery.

What to Expect on the Day of Surgery

When you go to your surgery appointment, you will register and sign a consent form. You will go to a pre-operative area, where you will have your temperature, pulse, blood pressure, respiratory rate, and oxygen saturation checked.

You will have an IV line placed in your arm or hand.

Your ophthalmologist and your anesthesiologist might see you before your surgery.

Before the Surgery

When you go to the operating room or suite where your surgery will take place, you will have your anesthesia started and your eye will be prepared for your surgery.

You will have the anesthetic medication injected into your IV to make you drowsy and relaxed. You might fall asleep. Then you will have local anesthesia injected in your eye with a needle or as liquid drops so you won't be able to feel anything.

Your face will be covered with a surgical drape. The area around your eye may be cleansed. And you may have antibiotic drops placed in your eye.

During the Surgery

You will have your laser cataract surgery with your eye open. A small retractor will be placed around your eye to keep it open.

Your ophthalmologist will make a small incision in the periphery of your cornea with the laser. This incision should be about 2 to 2.5 mm long, with a slight vertical and horizontal component.

Steps in your surgery include:

  • A femtosecond laser is used to break the lens into small pieces.
  • For the capsulotomy, a small opening is made into the front part of the lens capsule that holds the lens. The capsulotomy is created in a nearly perfect circular fashion due to the OCT integration with the laser. This circular incision can be centered perfectly to hold the new lens implant in place.
  • The next step in the cataract procedure is to insert a new intraocular lens implant to replace the lens that was previously removed.
  • Your surgeon might create small incisions with the laser to prevent residual astigmatism from developing after your surgery.

The incision is self-sealing, so stitches are not needed. Your eye may be covered with bandages for protection.

If you are still getting anesthesia in your IV, it will be stopped and you will go to a recovery area.

After the Surgery

In recovery, you may receive pain medication as necessary. Your nurses will make sure you are comfortable and can walk and eat without difficulty. If you aren't having any indication of complications (such as pain, bleeding, or swelling), you should be discharged to go home within a few hours after your procedure.

Before you are discharged, you will receive instructions about post-surgical eye care, when to make a follow-up appointment, and signs of complications to look out for.


Generally, healing after laser cataract surgery takes several weeks, but you may be able to see clearly within a few days after your procedure. You might be able to drive within the first week, but wait for your doctor to give you the green light before you start driving.

You should have a full recovery after about three months.

You will have an appointment to see your doctor within a week after surgery and again a few months after surgery.

If you are having an adjustable IOL, you will need to see your doctor about two weeks after your surgery so that your doctor can assess your vision and apply your prescription directly to your recently implanted lens with an ultrasound light.


You need to protect your eyes for several weeks after surgery while healing takes place. Don't get water or chemical in your eyes. And you need to wear sunglasses to protect your eyes from sunlight and from bright indoor lights.

You may see bright lights or halos around your field of vision as you are healing. Your eyes may feel dry or gritty. You can use artificial tears for comfort according to your doctor's instructions.

If you experience pain, swelling, bleeding, or worsening vision, be sure to call your doctor's office promptly.

Coping With Recovery

As you are recovering, you may experience a gradual stabilization of your vision. This happens as the lens capsule shrinks to hold the new lens in place.

The slight vision changes in the months after your surgery can make it difficult for you to drive, or even walk steadily. Take it easy, and discuss any concerns with your doctor, especially if you are having vision changes that are different from what you were told to expect.

Long Term Care

You should expect to experience substantial improvement in your vision. Typically, about six months after surgery, your vision should be stable.

You may still need to wear glasses even after your surgery. For most people, the calculated power of the new lens implant can decrease the need for glasses after surgery.

Sometimes, astigmatism will arise, causing reduced vision after surgery, and you may need to wear glasses to correct this vision problem.

Possible Future Surgeries

You can develop a cataract in your other eye or you can develop cataracts again in your surgical eye. If that happens, you would have to discuss your treatment options with your doctor.

Sometimes a YAG laser posterior capsulotomy is performed if cloudiness returns.

Lifestyle Adjustments

In general, you should not have any limitations as a result of having laser cataract surgery. However, it's important that you have regularly scheduled eye exams so that your doctor can identify vision changes early when they are still at a stage that is easy to treat.

A Word From Verywell

Laser cataract surgery is a method of cataract surgery. It is considered as safe as traditional cataract surgery, and there may also be some clinical advantages. This method isn't for everyone, and many health insurance payers cover the cost of traditional cataract surgery but don't cover the cost of laser cataract surgery. You and your doctor can discuss the best treatment approach for your cataracts.

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