Why use preservative-free eye drops?
Preservatives in eye drops should be avoided as they may worsen the patient's condition. This applies particularly to patients with moderate and severe dry eye, who may have to use eye drops quite frequently.
In 2007, the DEWS1 report stated clearly that "Many components of eye drop formulations can induce a toxic response from the ocular surface. Of these, the most common offenders are preservatives, such as benzalkonium chloride (BAC), which cause surface epithelial cell damage and punctuate epithelial keratitis, which interferes with surface wettability. Use of preserved drops is an important cause of dry eye signs and symptoms in glaucoma patients, and it is usually reversible on switching to non-preserved preparations. Therefore, frequent applications of preserved artificial tear preparations should be avoided."http://www.tearfilm.org/dewsreport/
So how about VISMED® eye drops? Do they contain any preservatives?
The answer is that not only are the single-dose vials (VISMED®, VISMED® GEL) preservative free, but neither do the new "Just squeeze" multi-dose bottles (VISMED® MULTI, VISMED® GEL MULTI) contain any preservatives at all. Our multidose bottles (ophthalmic squeeze dispensers) have been specially designed to remain sterile for up to 3 months after first use, whilst being very easy to use and offering a precise and reproducible drop ejection.
0.18% Sodium Hyaluronate for moderate symptoms
0.3% Sodium Hyaluronate for severe symptoms and a longer lasting effect
VISMED® GEL MULTI
How does the VISMED MULTI bottle work?
These innovative multi-dose bottles have a unique inbuilt system to keep the lubricant free from contaminants. TRB Chemedica was the first company to use the OSD bottles (Ophthalmic Squeeze Dispenser) for VISMED® MULTI. And, in fact, the design of the bottle actually won an award in 2012:
You can read more about the design of the bottle here: TRB_Chemedica International/VISMED_MULTI_OSD_Dispenser (on the website of our parent company).
- Report of the International Dry Eye Workshop. Ocul Surf 2007; 5; 65-204