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    Using a contact lens to treat corneal edema after cataract surgery

    It extracts fluid from the stroma, increase evaporation over lens surface


    Included in the study were 33 patients with an average age of 63 years (range, 23 to 80 years old). The patients were located in five centers around Europe, and they had had various forms of cataract surgery with IOL implantation or refractive lens exchange.

    Patients began to wear the lens immediately after surgery. One to two drops of hypertonic 5% sodium chloride were instilled, followed by an antibiotic. Patients continued a drops regimen at night, and surgeons checked their pachymetry and optical coherence tomography or Pentacam results at 1 day. This regimen continued as needed.

    Corneal thickness decreased from 730 µm at baseline to 630 µm at 48 hours.

    Although the study did not have a control group, Dr. Feinbaum noted that in peer-review literature, corneal edema after cataract surgery usually decreases after 1 to 2 weeks, sometimes longer in older patients. The contact lens treatment could be a way to shorten the amount of time a patient has edema, he said.

    The most common complication was discomfort, which was noted in four eyes. “In one eye, there was a tendency for the lens to fall out,” Dr. Feinbaum said. Patients had improved vision after treatment with the lens.

    In addition to cornea edema after cataract surgery, the contact lens is currently indicated for pain relief for the treatment of acute or chronic ocular pathologies such as bullous keratopathy, corneal erosions, entropion, and corneal dystrophies, he said. If needed, the contact lens can provide optical correction during healing, he added.

    Patients who cannot use the lens include those with an injury that abnormally affects the cornea or conjunctiva, severe insufficiency of lacrimal secretion, systemic disease that may affect the eye, and allergic reaction. Patients who cannot follow a reasonable lens care regimen also are not ideal for lens use, Dr. Feinbaum said.

    There is another study planned regarding the efficacy of the contact lens after corneal treatments such as laser refractive surgery.

    The Hyper-CL has a CE mark in Europe; it is not yet approved in the U.S., according to the manufacturer’s website.

    This article was adapted from Dr. Feinbaum’s presentation “Innovative soft contact lens to treat corneal edema” at the World Cornea Congress meeting in San Diego earlier this year.


    Claes G. Feinbaum, MSc, PhD

    E: [email protected]

    Dr. Feinbaum is a consultant for EyeYon Medical.


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