Abstract
OBJECTIVE: The objective of this study is to evaluate the cost of the use of lubricant eye drops, which are more used in the national market and contain in its formulation the same active ingredient – carboximeticelulose -, by considering their total number of drops in each flask. METHODS: An experimental study was accomplished by using three flasks of each one of the following eye drops: Lacrifilm®(eye drop 1) and Fresh Tears®(eye drop 2). To the analysis of their cost, [...]
Highlights
Dry eye syndrome is a multifactorial disease of the tears and ocular surface that results in tear film instability with consequent visual disturbances[1]
Two standard lubricating eye drops were studied in their 15 ml presentation: LacrifilmTM, called Product 1, and Refresh TearsTM, called Product 2. These products were chosen because they have same active ingredient and are among the most popular in the market according to a sales audit of DDD (Drug Distribution Data)
After variance analysis using the Mann-Whitney test, a statistically-significant difference was found between the two products for the total number of drops and the price (d” 0.000)
Summary
Dry eye syndrome is a multifactorial disease of the tears and ocular surface that results in tear film instability with consequent visual disturbances[1]. It is one of the most frequent complaints in ophthalmic practice. Its prevalence is comparable around the world, with rates ranging from 7 to 33%. This variation in prevalence is in part due to the different definitions of dry eye. The natural history of the condition is variable, with symptoms ranging from mild to severe[2]. The most common symptoms are fatigue, eye irritation, red eyes, photophobia, blurred vision, and foreign body sensation[3,4]
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