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What is a biosimilar
PTERIGION is a growth of the conjunctiva on the cornea, benign, usually bilateral, asymptomatic in many cases, which can lead to eye discomfort.
The PINGUECULA is, as it were, a previous step to PTERIGION since it is a lesion that does not invade the cornea, yellowish in color, which can become inflamed and give rise to secondary symptoms.
What are your causes?
The main risk factors of these two pathologies are ultraviolet radiation and dry eyes, hence they appear more frequently in warm countries and in patients who perform outdoor activities.
How do they manifest?
The PINGUÉCULA appears as a small white-yellowish lesion, close to the corneal edge, but which does not invade it.
The PTERIGION appears as a triangular or "wing" growth of the conjunctiva, which invades the cornea, often described as "a little face in the eye."
In many occasions, the patient who presents these pathologies is asymptomatic, but both lesions can become inflamed and give rise to the following symptoms and / or signs:
- Red eye
- Tearing
- Foreign body sensation
- Stinging
- Discomfort with contact lenses
- Photophobia
In the most severe cases, PTERIGION can lead to astigmatism or even invade the pupillary axis, resulting in decreased visual acuity.
What is your treatment?
The treatment of the PINGUÉCULA consists, if there is inflammation of it, in moisturizing and anti-inflammatory eye drops. The lesion is only removed if it causes numerous irritative episodes or for aesthetic reasons.
PTERIGION, when inflamed and producing symptoms, should also be treated with anti-inflammatory or corticosteroid eye drops and moisturizing. If drop treatment is not enough to control discomfort or if the lesion produces astigmatism and / or invades the center of the cornea, surgical removal should be considered. This surgery is performed using local anesthesia, does not require admission and in many cases, thanks to the new biological adhesives, it does not need sutures.
How can it be prevented?
We must take into account that although the lesion has been removed, it can grow again, so it is very important to prevent its reappearance using sunscreen glasses and moisturizing eye drops to reduce dry eyes.
Candelaria Pinto Herrera
General and Preventive Ophthalmology
CLÍNICA NIVARIA
Specialist in Ophthalmology via MIR (HUC)
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