lasilinsseillä

Lasilinsseillä is a Finnish term that translates to "with glass lenses" and refers to eyewear featuring lenses made of glass. Historically, glass was the primary material used for eyeglass lenses due to its optical clarity and scratch resistance. These lenses offer excellent optical quality, meaning they provide a clear and undistorted view. They are also known for their durability and resistance to scratching, which can be a significant advantage in certain professions or environments.

However, glass lenses have several drawbacks. They are considerably heavier than lenses made from modern plastic materials, which can lead to discomfort, especially for those who wear glasses for extended periods or require strong prescriptions. Glass is also more fragile and prone to shattering upon impact, posing a safety risk. While still used in some niche applications, such as high-index lenses where glass can achieve thinner profiles for very strong prescriptions, or in specialized optical instruments, glass lenses have largely been replaced by plastics like polycarbonate and various acrylics in everyday eyewear. These alternative materials are lighter, more impact-resistant, and can be easily treated with coatings for UV protection, anti-glare, and enhanced scratch resistance, making them the preferred choice for most consumers today.