It's a known believe that elderly people prefer multi dose vials as eye-drops. Could you discuss about avantages vs disavantages? Anybody knows about peer reviewed studies?
From medical point of view the main advantage is to use conservant-free solutions preventing ocular surface toxic changes in case of long-life therapy such as glaucoma, another adavantage is avoiding contamination of bottle tip in case of elderly patients. Another issue to be discussed is a cost efficacy, plastic containers, their utilisation and further ecoimpact, etc.
Many caregivers are concerned about the usability of the vials, stating that the bottle is better than the single use vials. Of course in terms of preservative free solutions I fully agree with you. What about the other issues dr. Marianne told about?
One more point should be noted, psychological perception of mind at subconscious level that's lesser use of eyes drops means little bit problem have, that cause more healing captivity of the cells by neurotransmitters.
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