What Is Pseudophakia?

Implanting an Artificial Lens in the Eye

Your ophthalmologist may use the word pseudophakia to explain what happens during cataract surgery. Don't let the strange-sounding word worry you. Pseudophakia refers to an artificial or fake lens, also known as an intraocular lens (IOL), being implanted in your eye in place of the clouded lens removed during cataract surgery. The new false lens can significantly improve your vision and improve your quality of life.

Types of Intraocular Lens (IOLs)

Verywell / Theresa Chiechi

What Is a Pseudophakic IOL?

Pseudophakic lenses can be made of plastic composites, silicone, or acrylic material. Just like your eyeglasses or contact lenses, IOLs can compensate for most vision issues you may have, such as nearsightedness or farsightedness.

They are also selected in strengths specifically for your eyes. There are four different types of lenses that you may be offered. These include:

  • Monofocal IOLs: These are the most common lenses implanted and are all one power. This means they're clearest when you're focusing in a certain range. Most often, these are set for distance vision, with reading glasses used to see up close.
  • Multifocal IOLs: Some prefer the idea of pseudophakic correction for both near and distance simultaneously, which multifocal lenses allow. Multifocal IOLs include a new trifocal version which corrects intermediate in addition to near and distance.
  • Accommodative IOLs: These can provide different corrections as they change shape in response to the contraction of the eye's ciliary muscles, which allows the eye to focus closer than a traditional monofocal IOL. This muscle's movement changes the shape of the lens to create clear near, intermediate, and distance vision. (However, the near vision is not as strong as a multifocal IOL.)
  • Toric IOLs: A toric lens can correct errors for those with astigmatism caused by an irregularly shaped cornea.

It's not uncommon to still need glasses sometimes with pseudophakic IOLs. Discuss with your practitioner which lens might best suit your needs and lifestyle.

Purpose of IOL Surgery

Cataract surgery removes a clouded lens and replaces it with a clear pseudophakic IOL. While the practice of removing such a lens dates back to the ancient Egyptians, it wasn't until the 1940s when ophthalmologist Harold Ridley invented the first phakic IOL (when an IOL is inserted without removing the patient's natural lens).

An artificial IOL helps you to see after your own cloudy lens is removed. When the light enters the eye, a lens focuses it. When the light is focused to the right strength, you can see sharply. The pseudophakic lens will be clear, just as your natural lens once was.

Age-related cataracts tend to occur when proteins in the lens begin to break down and stick together in places, interfering with the clear transmission of the light to the retina at the back of the eye.

With the most common cataract surgery type, a small wand is inserted into the eye through a tiny cut. This gives off sound waves that break apart the cataract into tiny pieces, which can then be suctioned out of the eye. The pseudophakic lens can then be put into the area to replace the original lens.

Another approach sometimes used for removal is extracapsular cataract surgery, where a larger cut is made. This may be used if it appears the cataract may be difficult to break apart. Your natural lens can then be removed in one piece and the pseudophakic lens inserted.

The IOL is placed in the posterior chamber (between the usual location of the lens and the iris).


The surgery itself is an outpatient procedure. Here's an idea of what to expect.


Before surgery, be sure to alert your practitioner about any chronic conditions you might have, such as heart disease, high blood pressure, or diabetes, to ensure these are under control.

Also, discuss any medications you may be taking. While cataract surgery doesn't typically cause much bleeding, it may be suggested that you temporarily discontinue any blood thinners. But discuss this with the prescribing doctor first.

Be sure to also mention if you're taking any alpha-agonists such as Flomax (tamsulosin), Uroxatral (afuzosin), Hytrin (terazosin), Cardura (doxazosin), or Rapaflo (silodosin), since these can potentially interfere with the procedure.

Before surgery begins, your eyes will be measured with biometry to help determine the right power pseudophakic lens for you. You'll also likely be expected to take some eye drops to prepare.

During Surgery

On the day of surgery, expect to spend around two to three hours at whatever facility your procedure is being done. The procedure itself will only last around 30 minutes, and you will be awake the entire time.

You will likely first be given a sedative to relax you. You'll also be given a local anesthetic to block any pain. The doctor may administer some antibiotics or other drops just before the surgery and again right after.

After Surgery

Once the surgery is done, the staff will explain what you need to do to care for your eye over the next few weeks during your recovery.

After resting for about half an hour, you can then go home. But be sure to secure a ride ahead of time since the surgery will preclude you from driving.


Over the next several months, you will be asked to return for some postoperative visits. These usually begin just one day after surgery. At the visit, the practitioner will look at your eyes, test your vision, and make sure your eye pressure has remained more or less constant.

To ward off infection and tamp down inflammation, you will also be asked to take drops for a while. Your vision will be somewhat blurry the first few days after surgery, but it will begin to clear within the first few weeks.

In nearly all cases, vision improves after cataract surgery. However, you may be prescribed glasses or contacts to wear as well. This prescription will likely be different from any previous one.

How long do eye lens implants last?

Since synthetic IOLs do not break down like natural lenses, eye doctors usually consider implants permanent and expect them to last a person for the rest of their life. In fact, children who receive lens implants will normally have no problems with their lenses through adulthood.
However, there are some instances in which certain types of lenses cause vision problems within a few years of being implanted. Discuss the risks with your healthcare provider before determining which lens is best for you.


In most cases, placement of the pseudophakic lens goes smoothly, but some occasional complications can occur. These can include:

  • Your vision is corrected too much or too little.
  • The lens is incorrectly positioned or moves.

In addition to complications with pseudophakia, cataract surgery itself may at times carry some risks such as:

  • Infection
  • Bleeding
  • Retinal detachment
  • Vision loss
  • Glaucoma
  • Corneal edema or swelling
  • Inflammation
  • Requiring a second surgery

A Word From Verywell

Implantation of a pseudophakic IOL after cataract surgery is a very common, highly successful procedure. With this technique, most individuals have excellent vision, not unlike what they enjoyed before the cataract developed.

Frequently Asked Questions

  • Is it okay to have pseudophakia of both eyes?

    Studies show that people who with lens problems experience better vision and a higher quality of life when they have bilateral pseudophakia (in which lenses of both eyes are replaced). There are risks such as anisometropia, which is when the eyes don’t have the same refractive error or preciptionbut these issues can be managed.

  • What is aphakia and pseudophakia?

    Aphakia refers to the absence of a lens in one or both eyes. A person may be born without the lens, or it may be removed surgically due to injury or disease. Pseudophakia refers to placing an artificial intraocular lens in an eye that is missing it.

  • What is pseudophakic corneal edema?

    Following cataract surgery in which an artificial intraocular lens is implanted in the eye, cells of the cornea may become damaged. This leads to pseudophakic corneal edema, which is characterized by swelling, impaired vision, pain, red eyes, seeing halos around light, and the sensation that there's a foreign object in your eye.

10 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Columbia University Department of Ophthalmology. Pseudophakia.

  2. American Academy of Ophthalmology. IOL Implants: Lens Replacement After Cataract Surgery.

  3. Harvard Medical School. Cataract Surgery: What to Expect Before, During and After.

  4. Cleveland Clinic. Cataracts.

  5. Kaiser Permanente. Cataract Surgery Pre-Operative Instructions.

  6. Harvard Medical School. Considering Cataract Surgery? What You Should Know.

  7. Beiko GHH, Grzybowski A. Intraocular lens implants: Do they come with a life time guaranty? Saudi Journal of Ophthalmology. 2015;29(4):247-248. doi:10.1016%2Fj.sjopt.2015.10.002

  8. American Refractive Surgery Council. Is Cataract Surgery With Vision-Correcting IOLs Safe?

  9. Schuster AK, Pfeiffer N, Schulz A, et al. The impact of pseudophakia on vision-related quality of life in the general population – The Gutenberg Health Study. Aging. 2017;9(3):1030-1040. doi:10.18632%2Faging.101208

  10. American Academy of Ophthalmology. Pseudophakic Bullous Keratopathy.

By Maxine Lipner
Maxine Lipner is a long-time health and medical writer with over 30 years of experience covering ophthalmology, oncology, and general health and wellness.