UV filter lenses

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UV filter lenses

UV filter lenses - Lenses that block ultraviolet (UV) rays from the sun, protecting your eyes from potential damage, such as cataracts and other eye conditions. UV filter lenses are particularly important for outdoor activities and are available in both prescription and non-prescription options.

The Best UV Protection for Your Eyes

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Many people use sunglasses as a fashion accessory to add a touch of sophistication to their style during the spring...

The Best UV Protection for Your Eyes

Good UV protection should always be a priority when buying sunglasses. Get to know and understand the different classes of...

UV Protection Sunglasses – How Different Protection Categories Work

Many people use sunglasses as a fashion accessory to add a touch of sophistication to their style during the spring...

Transition lenses

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Transition lenses

Transition lenses - Another name for photochromic lenses, which change their tint based on the amount of UV light exposure. These lenses automatically adjust from clear indoors to dark outdoors, providing continuous comfort and UV protection without needing to switch between regular glasses and sunglasses.

Transitions® Lenses

Transitions® lenses contain photochromic molecules, which cause the lenses to automatically darken and clear depending on the surrounding light conditions.

Transitions® Lenses

Transitions® lenses contain photochromic molecules, which cause the lenses to automatically darken and clear depending on the surrounding light conditions.

Tear ducts

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Tear ducts

Tear ducts - Small channels located in the inner corners of your eyes that drain tears into your nasal cavity. Tear ducts help keep your eyes moist, remove debris and provide protection against infection. Blocked tear ducts can lead to watery eyes or infections and may require medical treatment.

Eye Anatomy

Our eyes are made up of many parts that work together with the brain. They are critical in helping us...

Eye Anatomy

Our eyes are made up of many parts that work together with the brain. They are critical in helping us...

Single vision lenses

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Single vision lenses

Single vision lenses - Lenses that have a single prescription across the entire lens, used to correct nearsightedness, farsightedness, or astigmatism. Unlike multifocal lenses, single vision lenses are designed to focus at one specific distance, either for seeing clearly at a distance or up close.

The Different Lens Packages We Offer

Learn how lens index and material affects glasses, and which of our lens packages is the right fit for you!

The Different Lens Packages We Offer

Learn how lens index and material affects glasses, and which of our lens packages is the right fit for you!

Retinal detachment

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Retinal detachment

Retinal detachment - A serious eye condition where the retina, the light-sensitive layer at the back of the eye, separates from the underlying tissue. Symptoms include a sudden increase in floaters, flashes of light, or a shadow over your field of vision. Retinal detachment requires emergency treatment to prevent permanent vision loss.

Everything You Need To Know About How Eyes Work

Eyesight is as complex as it is important. From eye anatomy to eye health, here's how it works.

Eye Anatomy

Our eyes are made up of many parts that work together with the brain. They are critical in helping us...

Everything You Need To Know About How Eyes Work

Eyesight is as complex as it is important. From eye anatomy to eye health, here's how it works.

Eye Anatomy

Our eyes are made up of many parts that work together with the brain. They are critical in helping us...

Pupils

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Pupils

Pupils - The black circular openings in the center of your eyes that control the amount of light entering the eye. Pupils dilate (expand) in low light to let in more light and constrict (shrink) in bright light to protect the retina. They play a key role in focusing and adapting to different lighting conditions.

Eye Anatomy

Our eyes are made up of many parts that work together with the brain. They are critical in helping us...

Eye Anatomy

Our eyes are made up of many parts that work together with the brain. They are critical in helping us...

Pupillary distance

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Pupillary distance

Pupillary distance - This is the measurement from one pupil centre to the other pupil centre, measured in millimetres, important for ensuring that your lenses are correctly aligned with your eyes. Accurate pupillary distance is crucial for the effectiveness of your glasses, especially for tasks that require precision, like reading or computer work.

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If you’re wondering how to read your prescription, we’re here to help. Maybe you’re entirely new to wearing prescription glasses,...

What Is Pupillary Distance?

Pupillary distance is the distance between your pupils. Learn how to measure PD in this article.

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If you’re wondering how to read your prescription, we’re here to help. Maybe you’re entirely new to wearing prescription glasses,...

What Is Pupillary Distance?

Pupillary distance is the distance between your pupils. Learn how to measure PD in this article.

Varifocal lenses

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Varifocal lenses

Varifocal lenses - Multifocal lenses with a seamless gradient of varying optical powers, allowing clear vision at different distances without the visible lines found in bifocal or trifocal lenses. Varifocal lenses are often used to correct presbyopia, providing a more natural visual experience for activities ranging from driving to reading.

What Are Varifocal Lenses?

Varifocal lenses correct multiple vision problems by combining different prescriptions in one lens.

What Are Prescription Sunglasses?

Are you constantly straining your eyes to see while wearing non-prescription sunglasses outside? If you wear prescription glasses every day,...

What Are Varifocal Lenses?

Varifocal lenses correct multiple vision problems by combining different prescriptions in one lens.

What Are Prescription Sunglasses?

Are you constantly straining your eyes to see while wearing non-prescription sunglasses outside? If you wear prescription glasses every day,...

Prism lenses

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Prism lenses

Prism lenses - Specialised lenses used to correct double vision (diplopia) by altering the way light enters the eye, helping to align the images seen by each eye into a single, clear image. Prism lenses are often prescribed for people with certain eye alignment disorders, such as strabismus.

Prism Glasses

Prism glasses are used to treat binocular vision problems. This article explains how they work and what condiitons they treat.

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Prism Glasses

Prism glasses are used to treat binocular vision problems. This article explains how they work and what condiitons they treat.

Parts of Glasses: All You Need to Know

How many of the 11 different parts that makeup glasses can you name? By the end of this article, you'll...

Everything You Need To Know About How Eyes Work

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Everything You Need To Know About How Eyes Work

Ever wondered how eyesight works? Discover how our eyes communicate with our brains so that we can see.

The human eye is one of the most complex organs in the human body, second only to the brain. It comprises over two million working parts, all of which communicate to send signals to our brains.

This fascinating organ enables eyesight, its key sensory function. When the brain receives signals from the eyes, it interprets them to construct our perception of the world, allowing us to navigate our surroundings by producing an image of them.

Eye Anatomy

Cornea

The cornea is the dome shaped transparent part of the eye that refracts light as it enters the eye. Your cornea also helps to direct light as it enters the eyeball. Fluid from the tear ducts lubricates the cornea.

Sclera

The second layer of the outer part of the eye is the sclera. Where the cornea is a clear outer layer, the sclera is the visible white part of the eye that surrounds the iris.

Conjunctiva

The layers that make up the surface of the eye are protected by the eyelids and covered with a clear membrane called the conjunctiva. Our eyelids are also lined with protective conjunctiva.

Aqueous humour

This is fluid that fills the anterior and posterior chamber. The eye drains and reproduces the aqueous humour to regulate the eye’s pressure, helping to maintain the eye’s shape.

Vitreous humour

A common myth is that the eye is firm, which is actually not the case. The eyeball is filled with a clear, gel-like fluid called the vitreous humour. Alongside the aqueous humour, this also helps maintain the eye’s shape.

Iris

The iris is the coloured part of the eye, which is most commonly brown, blue or green. The iris is one of three parts of the middle layer of the eye, and contains the muscles that control the size of your pupil by making it contract and expand.

Pupil

The pupil is the black circle inside the iris and is another component of the middle eye. The muscles inside the iris control the size of the pupil to manage how much light enters the eye.

Lens

The lens is the third component of the middle layer of the eye. It focuses the light that enters your eye and directs it to the retina.

Retina

The retina is the innermost layer of light-sensitive cells located at the back of the eye. It converts light into signals that it then transmits these signals to the brain via the optic nerve.

Macula

The macula is instrumental to detailed central vision as it helps us see colour and fine details. As it’s in the centre of the retina, it’s responsible for processing most of what is directly in view.

Peripheral Retina

The peripheral retina is the outermost part of the retina which is responsible for your peripheral vision.

Optic nerve

This is the nerve that connects the retina at the back of the eye to the brain. It carries signals from the eyes to the visual cortex, the part of the brain responsible for sight.

External muscles

Alongside the internal muscles, there are external muscles around the eye that control its movement and position. These muscles also contribute to the eye’s shape.

DID YOU KNOW?

Your eyes are the second most complex organ in the human body, second to the brain.

The Brain-Eye Connection

Although eyes do have a certain aesthetic value, the eye primarily enables eyesight, an essential sensory function.

To do so, eyes capture and process light to create the images we see. Light first enters through the cornea, which helps focus it.

The pupil, controlled by the muscles in the iris, regulates light intake by adjusting its size based on brightness levels.

Once inside the eyes, light passes through the lens, which changes shape to refine focus.

The lens then directs it onto the retina, which contains rods which detect light and dark, and cones, which enable colour perception and sharp detail.

The image formed on the retina is inverted, but the optic nerve then transmits signals to the visual cortex, which corrects the image.

The visual cortex also integrates the input from each eye into a coherent image, creating depth perception.

The above process happens almost instantaneously. As sight is the primary sense through which we experience the world, this elaborate system allows us to map and navigate our surroundings.

A variety of factors can affect your vision. The eye muscles are constantly making subtle changes to the eye’s shape, directing the focus point so that light lands correctly on the retina.

The focus needs to be exact, and when it isn’t, vision appears blurry; similar to how a picture comes out blurry when a camera lens is out of focus.

Additionally, if the optic nerve is impaired, or if the connection between the eye and brain is not well developed, the signals sent to the brain won’t be interpreted correctly, making it difficult to see.

The process of seeing is clearly a very intricate process, with several connective elements that require perfect execution to achieve perfect vision.

However, if you’re struggling with your vision, you’re certainly not alone. Read further as we explain some of the many eye conditions that can affect your vision.

Eye Conditions

As the eye is such a complex organ, there are various conditions and diseases that can disrupt its proper function.

These conditions can be determined by several factors, including genetics, exposure, and a person’s overall health.

Our eyes are composed of various types of tissue, including muscles, nerves, connective tissue, and blood vessels.

When any of these components become damaged, the eye is unable to properly send signals to the brain’s visual cortex.

Refractive Errors

Refractive errors are some of the most common issues when it comes to eyes. In fact, your vision may be affected by a light refractive error without you even noticing it.

Refractive errors included three types; nearsightedness, farsightedness, and vision distortions such as astigmatism.

Retinal disorders

Damage to the retina can occur because of genetic or environmental factors. Retinal disorders include holes in the retina, detachment of the retina, diabetes-related retinopathy, and age-related macular degeneration.

Corneal disorders

Corneal disorders can be congenital conditions you are born with, or conditions which develop later on in life. Some of the most common corneal disorders include allergies, keratitis, dry eyes, or corneal dystrophies.

Optic nerve conditions

Injury or impairment of the optic nerve can have a significant negative effect on one’s vision as this nerve connects the eye to the brain’s visual cortex.

Some optic nerve conditions you may be familiar with include glaucoma and optic nerve atrophy; both of which reduce the field of vision and can lead to vision loss.

Age-related eye disorders

The severity of age-related eye disorders can range from the loss of near vision, known as presbyopia, to more serious concerns like cataracts, glaucoma, and age-related macular degeneration.

Since some age-related eye diseases are severe enough to cause permanent vision loss when not treated properly, it’s important to stay on top of eye health and get regular check-ups.

Eyes are also susceptible to more general illness or injury, including infections like conjunctivitis, injuries and trauma from sport, or even eye cancer, though this is rare.

When should I go for a vision test?

You should visit your dispensing optician once every 2 years, or more often if you require specialised care. This is crucial to maintain your eye health and update your prescription as necessary.

It’s also important to protect your eyes to prevent damage. Blue light glasses can help filter out the harmful blue-light emitted by digital devices, making them a great option for those who spend a lot of time at the computer.

Eyes are also highly sensitive to UV rays, so it’s important to wear protective sunglasses with UV protection when exposed to the sun.

If you have any further questions about eye anatomy or health, you can visit our Optical Centre for more resources on eye related topics. If you still have doubts, feel free to reach out to one of our certified dispensing opticians. They’ll be happy to help.

Vision Conditions & Eye Diseases

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What Causes Distorted Vision?

Learn more about distorted vision and dive into the different types and how to treat it.

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Our eyes are made up of many parts that work together with the brain. They are critical in helping us...

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Everything You Need To Know About How Eyes Work

Eye Anatomy

Cornea

Sclera

Conjunctiva

Aqueous humour

Vitreous humour

Iris

Pupil

Lens

Retina

Macula

Peripheral Retina

Optic nerve

External muscles

DID YOU KNOW?

The Brain-Eye Connection

Eye Conditions

Refractive Errors

Retinal disorders

Corneal disorders

Optic nerve conditions

Age-related eye disorders

When should I go for a vision test?

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Single vision lenses