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Dry eye syndrome ranks as one of the most frequent eye conditions encountered by ophthalmologists. Dry eyes are often irritated, red and may also tear and burn. The symptoms of dry eyes can be alleviated with lubricating eye drops. Preservatives in the preparations can damage the eyes. Therefore, patients are advised to use preservative free eye lubricants.

Why do most eye lubricants contain preservatives?

Eye drops in conventional dropper bottles must be preserved in order to prevent the solution from becoming contaminated and to prevent the risk of eye infections. However, tests have shown that preservatives do not offer complete sterile protection. In a third of the eye drops tested, bacteria were found in the bottles after 15 days – despite the addition of preservatives. The actual use of preservatives is therefore questionable. In addition to this the preservatives used are not always tolerated well by the patient.1

Preservatives can damage the sensitive cornea (eye cells) and change the composition of the tear film. The condition of dry eyes can subsequently worsen due to this.

Eye drops with preservatives can, therefore, do more harm than good to the eyes if used for a long time. In addition, preservatives can trigger allergies, so it is especially important to use preservative free eye drops when using eye drops daily for long periods of time.

The COMOD® system eliminates the need for preservatives

The best alternative for dry eyes for long-term users and contact lens wearers are eye drops without preservatives. The innovative multi-dose bottles from URSAPHARM, the patented, unique COMOD® system, enable sterility without preservatives. The so-called AIRLESS application system prevents the eye drop solution from coming into contact with the ambient air at any time by means of a well-designed air duct when the metering pump is operated.

Bacteria and fungal spores cannot get inside the bottle, and germs are excluded. Thanks to the COMOD® system, the eye drops can be kept for six months after opening.


 1 Source: Press release from the German Ophthalmic Society (DOG), January 2013 ( )