Discovering the Different Types of Eyeglass Lenses

Eyeglass lenses are crafted from a variety of materials and come in different types to cater to various needs. At Lakoh, we understand the importance of lens materials and their impact on vision correction. Let's delve into the different types of eyeglass lenses available today.

• Glass Lenses: Glass lenses were the earliest type used in ophthalmology. Made from optical glass, they offer superior optical properties and excellent transmittance. Glass lenses can be chemically treated for increased durability and scratch resistance. However, they are heavier and less impact resilient than other materials, making them less popular in modern eyewear.
• Resin Lenses: Resin lenses, both natural and synthetic, have gained popularity in recent years. Hard resin lenses, chemically synthesized, offer numerous advantages. They are lighter, more transparent, and provide enhanced comfort. With a softer surface and improved scratch resistance, resin lenses have become the mainstream choice in the market. They are also easily customizable to meet specific needs.
• Polycarbonate Lenses: Polycarbonate lenses are highly impact-resistant and shatterproof, making them ideal for outdoor activities. These lenses are exceptionally lightweight and offer 100% UV protection. While polycarbonate lenses are optimal for eyeglasses, their higher cost and production difficulty limit their availability in the market.
• Single Vision Lenses: Single vision lenses correct vision for a single focal length, making them the most commonly used optical lenses. They are designed for either distant or close vision and offer a large field of vision in one lens.
• Blue-Light Blocking Lenses: Digital protective lenses, also known as blue-light blocking lenses, effectively block harmful blue light with shorter wavelengths while allowing beneficial blue light with longer wavelengths to pass through. These lenses are suitable for heavy users of digital display devices to prevent potential damage from blue light.
• Sunglasses Lenses: Sunglasses lenses are designed to protect the eyes from excessive sunlight. By selectively absorbing certain parts of the sun's wavelength bands, they effectively block harmful light.
• Polarized Lenses: Polarized lenses reduce glare caused by sunlight reflecting off flat surfaces. With a special coating that suppresses strong light, polarized lenses are ideal for outdoor activities such as driving, skiing, and fishing.
• Photochromic Lenses: Photochromic lenses, also known as transitional lenses, darken in strong light and become transparent indoors. These lenses contain embedded molecules that adjust the lens color automatically based on light and ultraviolet intensity. They are a cost-effective option as they can function as both prescription glasses and sunglasses.
• Sport Lenses: Sport lenses and goggles are designed to protect the eyes from dust, water, and impact during physical activities. These lenses are typically made of highly resilient and tough materials such as polycarbonate or hard resin.
• Multifocal Lenses: Multifocal lenses provide multiple focal points in one lens, allowing wearers to see clearly at various distances. Progressive lenses, a type of multifocal lens, offer a smooth transition between different prescriptions within the lens. They eliminate the need for multiple pairs of glasses and provide comfortable vision correction.

In addition to different lens materials, lenses can also be classified based on their processing techniques, such as spherical lenses and aspheric lenses. Spherical lenses correct vision when there is no astigmatism, while aspheric lenses have an oval-shaped surface that gradually changes in curvature, providing better aberration control and a slimmer profile.

With an understanding of the various lens materials and types available, you can make an informed decision when choosing the most suitable eyeglasses for yourself. At Lakoh, we offer a wide range of glasses at affordable prices, with free international shipping. Explore our collection and find your perfect pair today!