What is the main reason for using alcohol spray on viewing glasses?

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Using alcohol spray on viewing glasses primarily hinges on its quick evaporation properties. When cleaning viewing glasses, it's essential to use a solution that dries rapidly to prevent streaks or residue that can be left behind by other cleaning substances. Alcohol-based sprays are effective in wiping down surfaces without leaving moisture for an extended period, which can distort clarity or visual accuracy.

Additionally, alcohol has the benefit of effectively removing oils and smudges, which are common culprits in obscuring vision through these glasses. The swift drying time allows users to maintain clear visibility without the hassle of waiting for a surface to dry after cleaning, making it a practical choice in various settings.

While there are other factors such as safety for materials, cost-effective cleaning alternatives, and visibility enhancement that may come into play, the rapid evaporation inherent to alcohol spray stands out as the primary reason for its use on viewing glasses.

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