The lens is the part of the eyeglass that the wearer sees through. The lens bends incoming light to help the wearer see more clearly and also protects the eye. Your lenses are custom-made based on your unique prescription and vision needs. There are several types of prescription lenses available depending on your needs.
Single Vision Lenses are used for individuals who have problems seeing at only one distance. For example, you may need single vision distance lenses to help you see objects far away more clearly or you may need single vision near lenses to see up close.
Bifocal or Trifocal Lenses have multiple powers that help the wearer see clearly at multiple distances. These powers are divided by "lines". For example, bifocals have two distinct powers: an upper region that helps the wearer see clearly at distance and a lower region that helps the wearer see up close. Trifocals also include a middle region for tasks that are at an intermediate distance such as computer work. The benefit of these multi-focal lenses is that the wearer doesn't have to switch back and forth between separate pairs of glasses when transitioning between distance and up close tasks.
Progressive Addition Lenses are also known as "no line bifocals". They are similar to bifocals because they also combine multiple powers to help the wearer see clearly in distance and near ranges. However, the powers transition seamlessly rather than being divided by a line. The lens still has an upper region for distance viewing and a lower region for up close tasks just like the bifocal, but it also has a region in the middle of the lens for tasks like working at a computer. There are several different tiers of progressive addition lenses from standard to more premium options depending on your needs, insurance coverage, and budget.
Near Variable Focus Progressive Lenses are also called "workspace or computer progressives". These lenses are a special type of progressive lens that maximizes vision for mid-range tasks like working at a computer. The lens has an upper region for intermediate vision and a lower region for up-close vision.
Eyeglass lenses can be made from a variety of materials to suit the needs and lifestyle of the wearer.
Plastic lenses are the most basic and affordable lenses. However, they are thicker and less impact- and scratch-resistant than other materials. The Medi-Cal program provides this type of lens for patients age 18+.
Polycarbonate lenses are designed to be thinner, lighter, and more impact- and scratch-resistant than plastic lenses and come with built-in UV protection. This type of lens is a good choice for children, active adults, and individuals with large prescriptions. The Medi-Cal program provides this type of lens for patients under the age of 18.
High index lenses are the thinnest and lightest lenses and can also be an ideal choice for individuals with large prescriptions. They also have built-in UV protection.
Trivex lenses are available for single vision and progressive prescriptions. Trivex lenses have the same features as polycarbonate but offer a higher optical clarity. We use Trivex material in rimless frames to protect the lenses from cracking.
Our office offers several anti-reflective (AR) coatings to help reduce glare and reflections caused by light bouncing off the lenses. These coatings enhance visual clarity because they allow more light to pass through the lens into the wearer's eye. This is especially helpful for night-time driving because it reduces the "starburst effect" caused by oncoming headlights. AR Coatings also provide increased scratch protection and are more effective at repelling dust, smudges, and water. The anti-reflective coatings that we offer also provide the wearer with UV protection.
There are several tiers of anti-reflective coatings that can be added to your lenses:
Standard AR Coat provides the most basic level of benefits listed above.
Crizal Easy Pro provides increased visual clarity, scratch protection, and is more repellant against dust, smudges, and water than the standard. This combines to make the lenses less likely to get dirty and easier to clean when they do.
Crizal Sapphire HR is one of the most premium AR coatings on the market and provides excellent visual clarity, protection, and cleanability.
Crizal Prevencia is a premium anti-reflective coating that also contains Blue Light Filtering Technology. We generally recommend this AR coating is used when an individual wants both Transitions and a Blue Light Filter in the same lens.
The glasses on the left do not have an anti-reflective coating while the glasses in the photo on the right do.
Anti-reflective coatings help to reduce the "starburst effect" of night-time lights.
Transitions® lenses are a unique hybrid of traditional eyeglasses with sunglasses. The lenses are clear indoors and darken when exposed to sunlight and provide UV protection. This means the wearer doesn't need to switch between regular glasses and sunglasses when going indoors or outdoors.
Transitions® GEN S change from clear to dark in seconds when exposed to direct sunlight and are fully clear indoors. These lenses darken slightly in the car, but not as much as a normal pair of sunglasses. There are 8 different colors available for single vision and progressive lenses: Ruby, Sapphire, Amethyst, Emerald, Graphite Green, Amber, Gray, and Brown. Bifocal and trifocal lenses are available in Gray and Brown.
Transitions® XTRACTIVE are best for individuals who are sensitive to light or are frequently exposed to bright light. They are nearly clear indoors with a hint of tint for increased comfort, transition more quickly and darker than the GEN S, and also darken some in the car. There are 3 different colors available: Gray, Brown, and Graphite Green.
Transitions® XTRACTIVE Polarized have the same features as the Transitions® XTRACTIVE but are also dynamically polarized which helps to reduce glare and provide the wearer with sharper vision and more vivid colors when the lenses are dark. It is available in Gray.