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Visian ICL™ versus Verisyse™ (Artisan) Phakic Intraocular Lens, LASIK, and PRK – Complications and Benefits

There is always some degree of risk associated with any surgery and refractive procedures are no different. Corneal refractive surgery and the implantation of phakic IOLs have both individual and shared features and risks. For zexample, LASIK and PRK share complications like dry eyes, but only LASIK has the risk of corneal flap complication. Similarly, Visian ICL (Implantable Collamer® Lens) and the Verisyse phakic intraocular lens are each implanted into the eye, but each has a different lens placement. Below, the similarities and differences of refractive procedures are outline.

Similarities of All Refractive Procedures

All refractive procedures are designed to improve some degree of refractive error, which may include nearsightedness, farsightedness, or astigmatism. In addition to sharing the common goal of improvement of vision, the procedures also share possible risks.

Some possible complications shared by all refractive procedures include:

  • Overcorrection
  • Undercorrection
  • Infection
  • A continued degree of refractive error

Corneal Refractive Surgery: LASIK and PRK

Both LASIK and PRK are laser eye surgeries used to correct myopia (nearsightedness), hyperopia (farsightedness), and astigmatism by reshaping the cornea. Because of the similarity between the procedures, PRK and LASIK share additional possible complications.

Some shared possible LASIK and PRK complications include:

  • Post-PRK or LASIK dry eyes
  • Glare and halos surrounding lights (especially at night)
  • Difficulty seeing in low-light situations

PRK Complications

In addition to the shared risks listed above, there are other possible PRK complications.

Delayed Healing

Because PRK surgery requires that the outer layer of the cornea be removed prior to the procedure, there is an increased healing time for the eye. The recovery during the first few days after surgery may be more painful than LASIK recovery, due to the removal of the epithelial cells.

Other Complications

Additional PRK complications include an increased sensitivity to light and the development of corneal haze. Corneal haze is a gray-white opacity that develops where the cornea was reshaped. In most cases, the haze will disappear within nine months; however, some occurrences of corneal haze do not disappear.

Comparison of Phakic IOLs

The Visian ICL and the Verisyse (Artisan) P-IOL are each a phakic intraocular lens approved by the FDA for vision correction. View the potential risks and complications of the phakic IOLs.

Both phakic intraocular lens implants:

  • Correct vision by complementing the eye's natural lens rather than replacing it.
  • Are able to correct a broader range of nearsightedness than LASIK, including severe myopia (up to -20 diopters of nearsightedness).
  • Are referred to as implantable contact lenses (ICLs).
  • Are removable if necessary.
  • Contain an ultraviolet filter.

The Visian ICL and Verisyse (Artisan) Phakic Intraocular Lens Differences

Although the Visian ICL and the Verisyse (Artisan) phakic intraocular lens share some characteristics, there are several notable distinctions between the lenses. These differences include:

  • Lens placement – The Verisyse (Artisan) phakic intraocular lens clips onto the iris and is visible to everyone, while the Visian ICL is placed in the posterior chamber making it invisible to the naked eye.
  • Lens material – The Visian ICL is made from Collamer; Verisyse (Artisan) P-IOL is made from a plastic called polymethylmethacrylate (PMMA). The Collamer material is only found in STAAR products, including the Visian ICL. Because the material contains a small amount of collagen it is uniquely biocompatible.
  • Flexibility – The Visian ICL is foldable, thereby requiring a smaller, self-healing incision. The Verisyse (Artisan) phakic intraocular lens requires small sutures to close a larger incision. The small incision required with the Visian ICL does not induce astigmatism.
  • Procedure time – The Visian ICL requires a short outpatient procedure that can be completed within 15 minutes. The Verisyse (Artisan) P-IOL requires a longer surgery since it requires an incision that is more than twice the length of the Visian ICL's incision.
  • Treatment range – The Visian ICL offers treatment of a wider range of myopia (-3.0D to -20.0D