What is a cataract?

What is a cataract?

A cataract affects the lens of the eye, which is nestled behind the iris. The lens is responsible for generating sharp images on the retina, by using and focusing the light that passes into the eye.

During youth, the lenses in the eye are transparent, flexible and in good shape. As the body begins to age, however, the lenses begin to thicken and the tissues within them break down and clump together. This produces clouding in small areas, which is known as a cataract.

Cataracts keep developing over time and, as they do, more of the lens gets covered with this clouding. A cataract inhibits light and stops the lens from creating a crisp, sharp image on the retina, resulting in blurry vision.

How do I know if I have a cataract?

There are a few signs that will help you identify if you have developed a cataract. Faded or yellow-tinged colours, increased sensitivity to glare and lights and a continual increase in lens prescription are a few symptoms.


If you find yourself needing brighter light when performing activities such as reading or writing, you may be experiencing light distortion as a result of cataracts. Other indications of cataract development include clouded, blurred or dimmed vision and seeing ‘halos’ around sources of light.


Often, the symptoms begin gradually, with only a small part of the eye’s lens being affected. You may not even be aware of the cataract at the beginning. However, as the manifestation grows larger and distorts the light you may begin to have more noticeable indicators.

Are there different types of cataract?

There are four different cataract types, which have slightly different indicators:

1. Posterior subcapsular cataracts
This type of cataract often experiences the fastest progression and affects the eye almost immediately to some degree. Vision impairment may occur with bright light and cause ‘halos’ to appear around lights when in dim surroundings. A posterior subcapsular cataract tends to form directly in the path of light, near the back of the eye’s lens.

2. Nuclear cataracts
Most often associated with aging, nuclear cataracts are normal with the progression of life. At first, this type of cataract will impede distance vision and cause nearsightedness. However, with time, cloudy vision is slowly introduced. This is due to the lens turning yellow, or even brown, which results in clouded vision and difficulty distinguishing between various colour shades.

3. Cortical cataracts
Cortical cataracts are detected on the outer edge of the lens cortex as white or creamy-coloured streaks. As the condition develops, these streaks elongate to the centre of the lens, which impedes the light that passes through the lens’s centre.

4. Congenital cataracts
A congenital cataract is a condition that people are born with, or develop during childhood. Genetics is usually the cause, although these cataracts can also arise through trauma, infection, or conditions such as rubella, myotonic dystrophy, and galactosemia. Unlike other forms of cataracts, congenital cataracts don’t affect vision in every single case.

Blue light filter glasses

Blue light filter glasses

Blue light is the natural light that makes up some of the light we get from the sun. When the sun is at its highest point in the middle of the day, we receive the most blue light and we get the least during sunset and sunrise. Blue light helps humans align our body clocks with our environment in order to strike the balance between wakefulness and sleep.

Aside from natural blue light, there is also man-made blue light. This is generated by technology such as lighting, phones and computer screens.

Is blue light bad?

Most light colours have different wavelengths and therefore different effects on our bodies. Blue wavelengths are beneficial during the hours we need to be awake, for example, while working or going about daily activities. This is because they they increase our reaction times and attention and boost our mood.

However, during the evening, when our bodies are meant to be winding down to rest, blue light can throw our circadian rhythm off. A disrupted body clock can result in poor sleep, anxiety, depression and even obesity.

How to counter the negative effects of blue light

During the day, the sun provides us with enough blue light to develop the melanin for when we need to go to sleep. Issues arise when we work in bright LED lighting at night, or use digital devices that emit blue light wavelengths. There are ways you can protect yourself at night, however, by using methods like blue light filter glasses and by changing your light bulbs.

If your home or workspace lighting emits cool-white, or blue-white light, replace the bulbs with those of warmer colour temperature, to give your body the best chance for a good night’s sleep. Another way to help yourself is to put your phone or device on to a night shift setting during later hours. This will reduce the amount of blue light you’re exposed to.

Perhaps the easiest way to keep your biological clock ticking correctly is to purchase and wear a pair of blue light filter glasses.

Benefits of blue light filter glasses

You may have heard of these glasses through friends or co-workers, or read about them, as these glasses are growing in popularity. Blue light filter glasses usually have clear lenses and are worn during the day – for example, while at work – and before bed to negate the negative effects of blue light.

It is common for people to complain of strained eyes, blurry vision and headaches from prolonged blue light exposure. Blue light filter glasses improve these symptoms using anti-glare lenses which help to alleviate eye discomfort.

These anti-glare lenses help reduce eye strain and counteract poor sleep habits caused by using electronic devices at night. Wearing blue light filter glasses is a great way to help you wake up feeling refreshed and rested from a good’s night sleep.

Designer glasses

Designer glasses

Eyeglasses are items you wear every day, all day, so finding ones that are comfortable and suit you is very important. There is a huge variety of frames to choose from, with options to suit all preferences.

Designer glasses are made to cater to a diverse customer base. If you are looking for a sturdy frame or one that rests lightly on your face, there are designer glasses made from a variety of materials, including metal, plastic, or a mixture of both.

When choosing a frame for your designer glasses, it’s important to make sure you like their aesthetics. Glasses make a statement and influence people’s impressions of you so it’s important to pick frames that suit your personality and the image you want to portray.

Designer glasses are carefully designed to be proportionally balanced and aesthetically pleasing to match your facial features, whereas cheaper frames and knock offs don’t have the same degree of craftsmanship.

Choose designer glasses from a trusted brand

One of the main reasons to choose designer glasses is that they have a trusted and established name behind them. This means the brand cares about the quality of their products. A genuine designer glasses brand will usually come with a warranty that offers you peace of mind. Plus, the frames are made from high-quality materials that will last.

The Optical Superstore offers a wide range of designer glasses at affordable prices, so you have plenty of options to choose from. It’s never been easier to choose durable, fashionable and functional frames to suit your look and lifestyle.

If you want to stand out from the crowd, designer glasses are the ideal choice. By wearing well-known brand names you’ll instantly be identified as having style and class and you’ll subconsciously be associated with the high esteem the designer glasses brand offers.

Designer glasses are also a great conversation starter, as people often notice the name on the frame and comment about it. On the other hand, if standing out is not your ideal, then choosing a sleek, well-made pair of designer frames with a discreet, or hidden, brand name is the right choice.

Designer glasses make a statement

Whether you want to appear serious, sophisticated, or youthful, designer glasses can convey this well. The right eyewear will make a clear statement about your lifestyle and personality. And, with designer glasses from Optical Superstore, there are plenty to choose from.

Designer glasses come in a wide range of shapes and sizes, from classic and traditional to modern and bespoke. Ovals, rectangles and almonds are shapes that convey professionalism and they appear more conservative. Whereas bright colours and frames with a high gloss finish convey youthfulness and fun.

Creative people can show off their fun side with larger frames and eye-catching contrast colours, while vintage style frames are perfect to convey an aloof, edgy look.

Choose designer glasses from the Optical Superstore and create the image you want.

Prescription safety glasses

Prescription safety glasses

Eye injuries are common when working in many different occupations. From construction and carpentry to machine working and science, protective safety glasses are essential for avoiding debilitating trauma. The cost of prescription safety glasses is incomparable when weighed against maintaining good vision. Your eyes are invaluable and anything that safeguards them is a wise investment.

Choosing the right level of eye protection

Wearing the correct eye protection for the activity you are doing is very important. There are many different types of eye protection, such as face shields, welding helmets and goggles, safety glasses, splash-resistant goggles, and gas resistant goggles.

Safety glasses designed for medium impact, such as those offered at Optical Superstore, are suitable for protection from sun glare, ultraviolet radiation, horticulture and gardening, lawn mowing, riveting, hammering, manual chipping and small flying particles.

Just as it is important to have the correct prescription safety glasses rating for each job, it is equally critical to ensure they are comfortable enough that you will wear them while on the job.

For those with regular glasses, wearing safety glasses over prescription lenses can be uncomfortable and wearing glasses on top of glasses can cause light reflections and glare. Along with the discomfort, this distraction can also be dangerous in different work scenarios.

Another problem is that regular prescription glasses may cause improper placement of regular safety glasses, which can be dangerous in a hazardous situation. To prevent this, the best solution is to wear prescription safety glasses.

Prescription safety glasses

Regular prescription eyeglasses do not qualify as safety glasses regardless of their frame size or durability. In fact, they could pose even more of a risk. If the lens shatters from impact, for example, your eye could be irreparably damaged. This is why prescription safety glasses are essential when working in potentially hazardous situations.

Most prescription safety glasses and Plano (without a prescription) safety glasses are made of polycarbonate, a very tough but not brittle material. This means that, if struck, the lens will not shatter as easily but instead, ‘give’.

Another benefit to polycarbonate prescription safety glass lenses is that they block out both UVA and UVB ultraviolet light. Exposure to UVB and UVB damages skin cells by impairing the DNA within them. This can result in cell mutations that can lead to premature aging and even cancer.

Without protection, these ultraviolet rays can cause eye damage, such as cataracts. Prescription safety glasses made from polycarbonate are impact-resistant and are what space shuttle window shields and astronaut helmet visors are usually made from. You couldn’t ask for more protection than that!

The Optical Superstore offers SAI global accreditation on medium impact lenses. This means that the frames and lenses are tested in a certified NATA laboratory to ensure complete safety.

Prescription safety glasses are very affordable and tailor-made for each customer. This custom creation takes into account individual prescription needs and formulates the perfect safety glasses for each requirement.

Many people take their eyesight for granted but it is one of the most precious gifts we have. Protect your eyes with prescription safety glasses from Optical Superstore and make sure you stay safe in style and comfort.

Multifocal glasses

Multifocal glasses

Multifocal lenses are different from regular lenses as they allow you to see at multiple distances. Multifocals are great for accommodating various vision needs at once, including viewing objects far away, to those very close, and all the ranges in between.

They are very convenient and enable the wearer to keep a single pair of glasses on, instead of switching between long-distance and nearsighted glasses. The multiple lens powers help you see at all distances.

The upper section of progressive multifocal lenses is designed to view objects at a distance, whereas the lower section provides assistance for seeing clearly up close. The middle section helps you see objects at intermediate distances.

Multifocals work when you move your eyes up and down the lens. At different spots, your vision will be enhanced for whichever specific need you require. The lens zones can be altered for optimal positioning by your optometrist.

The need for a progressive lens escalates as aging continues. By midlife, around the age of 40, many people need aid in focusing their eyes.

Types of digital multifocals

Optical Superstore have specifically designed multifocal lenses to cater to every need. Trueform and Trueform plus are digitally-designed lenses that are suitable for all prescriptions and are a great choice for basic entry-level glasses.

Precision multifocals are designed for general use and everyday tasks. They have wide zones of distance for viewing far objects, landscapes and general views, as well as near vision for tasks like reading.

Digital Plus Panorama

Digital Plus Panorama multifocals are a great choice for those who are active and outdoorsy. They offer less distortion and, paired with a wide distance zone, are ideal for external adventures. Their generous intermediate and near zones are perfect for computer work or reading. Digital Plus Panorama multifocals boast clean, unobstructed vision and are ideal for driving, cycling and studying.

Digital Plus Defined

The seamless distribution of prescription over the lens results in an effortless adaptation for wearers that choose to go with this option. They are a great choice for everyday use, with their wide intermediate zone, along with a near zone for closer viewing.

Benefits of multifocals

Multifocals are aesthetically pleasing and can provide a youthful look with the right frames. The visible lines characteristic of bifocal lenses are often associated with aging. However, many multifocal designs do not include this feature. Many people opt to wear multifocals for the reason that they look like regular glasses.

Additionally, bifocals and trifocals are known for their irritating ‘image jump’. This happens when objects change in position and clarity when you look through the lens line. This can be extremely annoying and multifocals are often chosen for the fact they don’t have this feature.

It is important to note that a qualified optical dispenser is imperative to help you choose the right lens. If you are looking for multifocals – or want to discuss if they’re the right option for you – Optical Superstore can help.

Contact lenses

Contact lenses

Many people today require eyesight aid, in the form of lenses. Some prefer to use traditional eyeglasses, which become a staple part of their everyday wear, while others prefer the seamless and inconspicuous design of contact lenses.

Contact lenses are very thin, often transparent, pieces of material that contain a custom prescription. They are very handy for those who work in particular professions or play sports where glasses are impractical or uncomfortable. This is because contact lenses sit gently and unobtrusively in the eye.

Contact lenses come in many different brands, with variations of materials that cater for the comfort, needs and preferences of the user. Most prescription contact lenses are categorised into three unique types: daily, fortnightly, and monthly.

Three categories of contact lenses

Daily contact lenses are hassle-free and don’t require cleaning. They are disposed of at the end of each day and are made to be worn for a single day only. For this reason, if you wear daily contact lenses you don’t need to carry contact lens solution or cases with you. For those with sensitive eyes, dailies are a great option, as a fresh pair of contacts each day can be softer and gentler on the eye than reusable contact lenses.

Fortnightly lenses are a great option for those looking to save more money compared with daily disposable contact lenses. You can wear these every day for up to two weeks, providing they are cleaned daily and don’t have scratches or nicks in them. Fortnightly contact lenses mean you only need to purchase 26 lenses a year, which offers good value.

Monthly contact lenses are ideal for those who are looking for a cost-effective solution and who are prepared to take care of their contact lenses. These contact lenses can be worn every day for a month, except for at night time when they need to be cleaned with solution. Twelve lenses are ample for the whole year, providing you don’t lose or tear them.

Traditional style contact lenses are deemed reusable lenses. These can often last for six months or more. If you are travelling somewhere where contact lenses are unobtainable, for example, then these contact lenses are a good option.

When to replace your contact lenses

Even with good care, contact lenses should be replaced relatively frequently and according to the manufacturer’s advice. This is because your eyes are very sensitive and a build-up of contamination and lens deposits can harm your eye and increase the chances of you getting an eye infection.

Contact lens designs

Soft contact lenses can be made out of silicone, or hydrogel, which fits the eye comfortably. These are available in many different designs, depending on the user’s needs.
Cosmetic contact lenses are designed for changing your eye colour, or to add dramatic effects to the eye. Often used for costume, special effects contacts are also considered cosmetic lenses. These lenses are often used without prescriptions by the general public, however, prescription cosmetic contact lenses can be made for those with eyesight that needs correction.

Spherical contact lenses are designed for those with myopia and hyperopia. These maintain the same lens power throughout the lens to allow for everyday, general eyesight correction. Toric soft contact lenses have different lens powers in the meridians of the lens. This enables astigmatism to be corrected, as well as far and nearsightedness.

To find out which contact lenses are right for you, contact Optical Superstore and our helpful staff will be glad to help.