Cystadropes are new eye drops that can clear cystine crystal deposits in the cornea of patients with cystinosis.
Cystadropes can significantly reduce the deposition of cystine crystals in the cornea.
Cystine storage disease is a rare congenital disease that causes cystine crystals to accumulate throughout the body, causing extensive tissue and organ damage and a major effect on the eyes.
Cystinosis is a complex disease.
Early diagnosis and timely treatment are essential to slow the development and progression of symptoms.
Over the past few decades, advances in the treatment of cystine storage disease have led to increased life expectancy. Despite these advances, the ocular manifestations of this disease are an ongoing struggle for patients. Patients with acidosis are sensitive to light, discomfort and pain in their eyes. “They often even wear sunglasses indoors and try to continue their daily activities such as school and work.” It is a cysteine-lowering agent that has been identified for the treatment of corneal cystine crystalline deposits in adults and children with cystinosis.

Amount and method of consumption

Use 4 times a day when waking up.

Do not touch the tip of the dropper to the eyelids, surrounding areas or any surface, as it may contaminate the solution.

In case of concomitant treatment with other topical eye products, there should be an interval of 10 minutes between consecutive programs. Eye ointment should be used at the end.

Discard the drop 7 days after the first opening.

Patients should wash their hands thoroughly to prevent microbiological contamination of the contents of the bottle.

side effects

The most common side effects (٪ 10) reported during clinical trials were: eye pain, blurred vision, eye irritation, ocular hyperemia, discomfort at the site of induction, ocular itching, increased runoff, and ocular deposits.


There are no adequate and controlled studies of ocular cystamine in pregnant women for drug-related risks.

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