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Losartan Eye Drops: Corneal Scars | Eye Doctor

Compounded Topical Losartan: Corneal Fibrosis and Scars

Off-label ophthalmic compounded therapy to inhibit corneal scarring and restore transparency.

What are Losartan Eye Drops

Losartan potassium is an oral antihypertensive drug. However, recent ophthalmic research shows that topical application has a powerful anti-fibrotic effect. Since it is not commercially manufactured as an eye drop, topical losartan must be custom-made as a compounded sterile medication (galenico) by a specialized pharmacist upon a specific medical prescription.

Meccanismo Bio-Molecolare
TGF-β Inhibition

Blocks the Transforming Growth Factor Beta (TGF-β) receptor, which drives tissue fibrosis.

Scar Prevention

Prevents keratocytes from transforming into opaque myofibroblasts, keeping the cornea clear.

Tissue Regeneration

Promotes orderly healing after ocular trauma or surgery, reducing haze.

Clinical Indications: When is it prescribed

Scenarios where specialists evaluate topical losartan (off-label use).

Corneal Fibrosis and Opacity (Haze): To prevent or treat whitish scars post-infection or post-trauma that impair vision.

Refractive Surgery Sequelae: Controlling anomalous scarring after excimer laser procedures (PRK, LASIK).

Corneal Dystrophies: Supporting the clinical management of specific structural corneal alterations.

Refractory Corneal Damage: Surface lesions unresponsive to traditional treatments (can be paired with cyclosporine or autoserum).

Losartan is not a standard drop for common dry eye, but a targeted therapy for structural corneal management.

Compounding and Medical Prescription

As a master preparation, the ophthalmologist writes a non-repeatable prescription (off-label use). The compounding pharmacist uses pure raw material to create the drops in a sterile cleanroom. This allows for a customized dosage (typically 0.8 mg/ml, or 0.08%), preservative-free if necessary. The eye drops usually have a short shelf life (30-90 days) and should be stored below 25°C as indicated on the label.

Tolerability, Safety, and Side Effects

Transient irritation, redness, or a foreign body sensation may occur immediately after instillation.

Though applied locally, a minimal amount may be absorbed. Report any dizziness or drops in blood pressure (rare) to your doctor.

In active ulcers, losartan does not treat pathogens. It is used in the remodeling phase to prevent scarring.

Unless prescribed as a therapeutic bandage lens, cosmetic contact lens use should be suspended.

Supportive Regenerative Therapies

Healing corneal ulcers is complex. To prevent scarring (Losartan's action), it is often necessary to first support epithelial closure. Specialists may prescribe high-impact regenerative therapies like Autologous Serum Eye Drops or compounded Topical Insulin.

Explore Regenerative Therapies →

Frequently Asked Questions (FAQ)

Absolutely not. As a compounded drug containing a pharmacological active ingredient for off-label use, it requires a specific, non-repeatable specialist prescription.

The cost is regulated by the National Tariff for Medicines and raw material prices. Being a custom-made sterile product, it has a medium-high cost.

The topical ophthalmic dosage (e.g., 0.08%) is very low compared to oral tablets, so systemic effects on blood pressure are extremely rare, though hypotensive patients should be monitored.
Scientific Evidence and Bibliography
  • Abdelghaffar M, Güell J, Moura-Coelho N. Topical losartan ophthalmic drops - a review of corneal wound healing and topical losartan for managing corneal haze and potential future indications. Graefes Arch Clin Exp Ophthalmol. 2025. PubMed
  • Domene-Hickman JL, et al. Topical losartan for established corneal fibrosis with machine learning-based predictors. Ther Adv Ophthalmol. 2025. PubMed
  • Hospital Universitario Torrecárdenas. Stability assessment of preservative-free losartan potassium eye drops compounded for ophthalmic use. Eur J Hosp Pharm. 2026. PubMed
Deontological Notice: The information provided is for educational purposes. Topical Losartan is used off-label in ophthalmology; indications, contraindications, and dosages must be strictly determined by your treating ophthalmologist.

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