Lenses

Our Premier Optical team is dedicated to providing unparalleled vision with state-of-the-art lens technology.

 

 

 

 

www.nikonlenswear.ca

Digital Measurements

We use modern digital technology to map the most accurate measurements needed to build eyewear of the highest quality.

lense

Types of Eyeglass Lenses

The design of your lens is the most important step in ensuring the vision you need. Lens design refers to the characteristics of the lens, and is the process of designing a lens to meet a set of performances, including:

• Surfacing: the process by which a prescription is placed onto a lens. Digital or Traditional
• Lens Types: Single Vision, Anti-Fatigue, Progressives, Bifocals, Computer/Office and more
• Lens Material: CR-39 plastic, Hi-Index, Tribrid, Polycarbonate, Trivex and more
• Coatings: Scratch resistance, Anti-Reflective, UV protection, Blue-light blocking and more

Traditional vs. Digital Lens

Digital or high-definition lenses are custom made to account for the exact positioning of the eyes relative to the lenses and the frame measurements, including:

• Monocular PD – the distance from the centre of the nose to the centre of the pupil individually
• OC height – the vertical distance from the bottom of the frame to the centre of the pupil
• Frame wrap/size – the curvature of the frame/ size of the lens in the frame
• Pantoscopic tilt – the tilt angle of the frame front relative to the front plane of the face
• Vertex distance – the distance from the back of the lens to the eye

The result is that Digital/High-Definition lenses provide the widest field of view, sharper image quality/contract, better peripheral vision and improved colour enhancement. Full digital lenses are the best possible option within their own family of lenses.

Digital lenses are available in all types of lens design and all available materials.

Single Vision Lenses

This is the simplest type of lens which provides clear vision at a single focal length. For most people, such lenses are intended to view distance from far, reading or computer.

A single vision lens has the correct prescription situated in the optical centre. For ideal vision, the optical centre should be centered precisely in the centre of the pupil, in a well-fitting frame. Proper centration requires 2 measurements, the monocular PD and the OC height. Without these measurements, proper centration can not be achieved.

When the eyes do not look through the lens' optical centre, vision may become distorted and blurred. The amount of blur and distortion depend on the lens centration, frame measurements including how far the lens is to the eyes and the power of the lens.

Anti-Fatigue Lenses

Anti-fatigue lens has a near-active zone located at the bottom of the lens with a distance viewing focal point at the top. The minimal reading boost power is designed for close-up work and digital devices. This helps reduce strain on the focusing system, resulting in less fatigue and more comfort.

Anti-fatigue lenses were introduced to address digital eye strain. We are spending far more time looking at things “close-up” than we did before. This often resulting in lots of eye strain and stress on our eye muscles.

Progressive Lenses

With age, the crystalline lenses in our eyes begin to harden and become less flexible, which reduces our ability to focus up close. Presbyopia comes with age, even if you've never had to wear glasses before. Your vision is likely to change once you've hit your 40s or older.

Progressive lenses are designed to help with presbyopia by increasing the reading power the further down you look in the lens. The power of progressive lens changes gradually from point-to-point, providing the correct power to see clearly at virtually any distance.

There are more than 900 progressive designs that make it more complex for consumers. Each design is unique in how power transitions from distance to near. There are designs available that focus more on reading, Intermediate or distance.
There is no perfect progressive design for everyone, the choice of design is based entirely on what you need the most.

High-end progressive lenses are digitally surfaced with less distortion and blur on the sides, resulting in clearer viewing areas. These digital custom lenses deliver optimum vision at all distances.

Computer/Office Lenses

Computer progressive lenses are designed to offer better vision and more comfort at work. Modern technology governs and simplifies our lives both at home and at work. We spend a large portion of our time working on electronic devices and displays. As a result, it is essential to stay productive for long periods.

Full progressive lenses are not ideal for long-term computer use. They have a relatively narrower intermediate and reading area, which is also further down the lens. As a result, the user has to tilt his/her chin up and make a lot of head turn to be able to find the sweet viewing area.

Computer/office lenses are tailored to your specific needs and allow for a more relaxed posture. The lens design provides a wide field of vision from near to intermediate. Allow your head and neck to be in a natural, relaxed posture all day long. This helps you to see and work comfortably within the range of vision needed for your job.

Coatings

Anti-reflective (AR) coating is a thin, transparent film structure with alternating layers applied to the lens surface resulting in reduced reflection. The visual benefits of lenses with anti-reflective coating include, improved vision, better visibility, reduced eye strain, enhanced comfort during computer use, and a more attractive look for eyewear.

The more layers, the better the glare reduction, since each layer is specific for eliminating glare of a certain wavelength. The most premium anti-reflective coatings include surface treatments that seal the AR layers and provides an easy clean lens. Surface treatments that offer both Hydrophobic (water-resistant) and Oleophobic (oil-resistant) are highly recommended.

Modern anti-reflective coatings are almost invisible to the lens and provide tough scratch resistance, enhanced UV protection and blue-light blocking.

Blue-light coating

In recent years, blue light has been one of the most talked-about topics amongst eye health care professionals. Much of this emphasis has grown from concerns about potential harmful ocular effects related to extensive use of digital technology.

Blue light, also known as high-energy visible (HEV) light, consists of short wavelengths ranging from 380 nm to 500 nm.
Blue light is considered potentially harmful and have been implicated as one of the possible causes of photoretinitis (damage to the retina caused by high-energy light). Too much light in the ultraviolet and blue-violet bands could damage the human eye. It may also cause damage to the crystalline lens (cataracts) and, in particular, to the retina (macular degeneration)

Blue-light coatings are designed to divert and block blue light (short wavelength) from entering the eye. For this reason, these lenses have a blue colour tinge to them.

Lens coatings that feature a filter for blue-light can thus help protect your eyes in any situation. Blue-light blocking eyewear is recommended for everyone, especially if you spend hours every day in front of a screen. It can reduce eye strain and prevent tired eye and potential eye diseases.

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