Thanks to the advancement of lens technology, glasses lenses are no longer a single, one size fits all solution. There are a variety of different lens types that can be used in glasses, giving patients greater flexibility and control over their vision than ever before.
Also known as monovision lenses, these lenses are designed to correct the wearer’s vision at just one distance, and have a single prescription covering the entire surface of the lens. They are most often recommended for people who are either nearsighted (myopia) or farsighted (hyperopia) and who need glasses for a specific activity, such as driving or reading.
Progressive lenses are multifocal lenses that can correct a patient’s vision at different working distances, ranging from far distance to reading distance. However, rather than designating different areas on the lenses for different distances with visible lines separating them, progressive lenses have a gradual change so that the wearer can smoothly transition from one lens power to another.
As you may have guessed from the name, bifocal and trifocal lenses have either two or three lens powers depending on which type you choose. Bifocal lenses support distance vision in the top half of the lens, and near vision in the lower half. Trifocal lenses support distance vision in the top third of the lens, intermediate vision in the middle segment and near vision in the bottom third. Whichever variety you choose, you will see visible lines separating each segment.
Bifocal and trifocal lenses are recommended for patients who are near or farsighted, and those who develop presbyopia, which is the natural hardening of the eye lens, that occurs as we get older. Presbyopia makes it harder for the lens of the eye to adapt to focus at different distances.
Computer lenses are prescription lenses that are specifically designed to be worn when doing computer work. This is because they place the optimum lens power for viewing your computer screen exactly where you need it – which is closer than intermediate vision, but further away than reading material is usually held. Wearing computer lenses can significantly reduce the negative effects caused by the high visual demands of computer work, including blurred vision, redness, dry eyes, double vision and dizziness.
Also known as photochromic lenses, transition lenses are a special type of lens that darken when in the sunlight and lighten when in softer light or the dark. This versatility gives the wearer the convenience of being able to move between different environments without needing to change their glasses. This makes them extremely cost effective and prevent the wearer from needing to take multiple pairs of glasses out with them. Transition lenses also filter out many of the harmful UV rays that are emitted from the sun, helping to keep eyes healthy too. They are ideal for people who spend a lot of time going between inside and outside, or who work outside in varying weather conditions.
Blue light lenses are specially crafted lenses that contain filters that block out much of the artificial blue light that is produced by digital devices like computers, smartphones and tablets. Natural blue light is actually good for balancing our sleep-wake cycle, boosting our mood and enhancing our cognitive abilities so that we can function better day to day. However, too much blue light, especially from artificial sources, can have the opposite effect. Many people who fail to use blue light lenses can go on to develop digital eye strain, which produces symptoms like eye fatigue, dry eyes, blurred vision, headaches and more. Blue light lenses are recommended for anyone who spends a lot of time working on a digital device.
Polarized lenses are used to reduce eyestrain and improve the quality of vision in patients on especially sunny days, making them ideal for anyone who spends a lot of time outdoors. They can do this because they have a special filter that blocks some of the light from passing through the lens. Vertical light is allowed to pass through, while horizontal light, such as that which bounces off of water and can be blinding, is blocked. Polarized lenses are most often used in sunglasses since they are worn outdoors, and the wearer also needs to protect their eyes from UV damage.
Still have questions about which lens is right for you? Contact us to schedule an eye exam or an appointment to evaluate your individual needs.
Wearing contact lenses gives patients the flexibility and freedom to live life to the fullest, without some of the difficulties presented by wearing glasses. Many people who choose contact lenses do so because they don’t like the way that glasses look or feel, or because wearing glasses compromises their ability to perform certain tasks or activities, such as sports or jobs that require the use of safety goggles.
There are lots of different contact lenses to choose from, with two of the most popular being daily disposables and toric lenses.
As their name suggests, these daily contact lenses are disposable. This means that they can and should be discarded at the end of each day rather than re-worn. Disposable lenses do tend to be a little more expensive than some repeat-wear varieties, but the benefits usually outweigh the cost.
Some of the advantages of choosing daily disposable contact lenses include:
You don’t have to clean them, which saves patients a great deal of time and hassle. It also helps save money in terms of the ongoing cost of cleaning solution.
Disposable lenses are also great for people with eye allergies. This is because with ordinary lenses, there’s an opportunity for deposits and microorganisms to build up. With daily disposables, allergens have less chance to attach themselves to the lenses and cause irritation and other allergy symptoms.
You don’t need to schedule regular replacements either, which makes wearing contact lenses easier on your schedule.
Disposable contact lenses are particularly good for people who have busy lives and are likely to cut corners when it comes to caring for their eyes or contacts since there is no cleaning or maintenance required.
Daily disposable contact lenses are available in a wide range of prescriptions, including those for patients with nearsightedness and farsightedness. Your eye doctor will be able to advise you if you are a candidate for disposable contact lenses.
Toric contact lenses are recommended for patients who have a refractive eye problem called astigmatism. Patients with astigmatism have corneal abnormalities that cause the refraction of the eye to be different between the vertical and horizontal planes, causing blurred vision and difficulty seeing fine details. Toric contact lenses are shaped in a particular way that creates the different focusing powers needed in each part of the lens to correct your vision. For this reason, it’s essential that Toric lenses are placed into the eyes in the correct position. Fortunately, manufacturers design Toric lenses with features that help them to stay in place, including:
Creating areas of the lens that are thicker or heavier which helps secure it in position
An area where the bottom of the lens is slightly cut off
To keep them stable, Toric lenses are a little firmer than conventional soft lenses. This means that some patients can find them a little less comfortable, but the superior vision they obtain outweighs this. Your eye doctor will be able to advise you if you are a good candidate for Toric contact lenses and which variety would best suit you.
To find out more about daily contact lenses, speak to our friendly and knowledgeable team.
If you’ve never worn contact lenses before, it can seem a bit intimidating. After all, you’re inserting something into your eye! Let’s ease your mind about the first step – your contact lens exam. This post will walk you through what’s involved in a contact lens exam and what you can expect every step of the way.
Your eye doctor will first determine your overall eye health and vision. This includes a discussion of your health history and then a series of standard eye tests. These tests will evaluate eye focusing, eye teaming, depth perception, color vision, peripheral vision, and the response of your pupils to light. The doctor will also measure your eye’s fluid pressure to check for glaucoma, evaluate your retina and optic nerve, and test your vision with different lenses to assess whether contact lenses can improve your vision.
If contact lenses are appropriate for you, it’s time to talk about your contact lens preferences. For example, do you want to enhance or change your eye color? Would you prefer daily disposable lenses or overnight contacts? Ask about the benefits or drawbacks of each, so that you make the best decision. If you’re over 40, your doctor will likely discuss age-related vision changes and how contact lenses can address these issues.
Contact lenses require precise measurements of your eyes to fit properly. Using an instrument called a keratometer, your doctor will measure the curvature of your eye's cornea, the clear front surface of your eye. Next, the size of your eyes pupil is measured using a card or ruler showing different pupil sizes which is held next to your eye to determine the best match.
If you have dry eyes, your eye doctor will perform a tear film evaluation to measure the amount of tear film on the surface of your eye. If your tear film is insufficient or you have chronic dry eyes, contact lenses may not be a good option for you. However, some newer contact lenses deliver moisture to the surface of the eye, making them a better choice for individuals with dry eye issues.
The final step is to fit you with a trial pair of contact lenses. Once inserted, your eye doctor will examine the lenses in your eyes to ensure a good fit. He/she will check the alignment and movement of the lenses on the surface of your eye and if the fit looks good, the last step is to ensure the prescription is correct with a few more tests.
Your contact lens exam is over, but you’ll need to come back. Your doctor will usually have you wear the trial lenses for a week. After that, you’ll have a short follow-up exam to confirm that the lenses are working well for you and you can then order a supply of contact lenses.
When it’s time to select a new pair of eyeglasses, it can be challenging to find the frame that feels the best for you. Eyeglass makers have become increasingly aware of their clients’ desire to customize frames as well as offer a variety of colors, designs, and frame shapes. Understanding more about your face shape and the types of frames that would look best on you can help to reduce the amount of time you spend trying on frames that don’t complement your face shape. Here are a few useful tips to help you find glasses best suited for your face shape.
While there are thousands of different frame shapes, there are only seven different face shapes.
This face type is as wide is it is long. There are no specific or well-defined angles to this face type. Most people with this facial type look for frames that will elongate their face in order to draw out their natural features as well as give their face a thinner appearance. A good choice is often to select a frame that is angular and narrow.
If you can imagine the shape of a traditional heart, this face shape is easy to identify. The top 1/3 of the face is wider while the rest of the face tapers to a narrow chin. Individuals with this face shape will often seek frames that are wider at the bottom of the lens. This helps to balance the face and give the appearance of a narrower face at the top. Another great fit for this face type would be rimless frames.
This face type contains a wide jaw and cheekbones but is narrow at the forehead. Cat-eye type frames are great for this face type, as are frames that are heavier near the eyebrow to provide more balance.
This face type is the rarest. The diamond face is like the base-down triangle but differs because it has a narrow chin, thus appearing like a diamond. When selecting eyeglasses, look for oval-shaped frames, or frames that have more detail along the brow line.
This face type looks like an oval, but these individuals have a straight cheek line. This face is fuller than it is long. Frame types that add some depth are ideal for this face. This can be done by finding frames that have decorative pieces along the temples or that have more depth with a reduced width.
Oval faces are the most common face type. They are considered to have balanced proportions so that most frame types will work well. An oval face is longer than it is wide and includes plump cheekbones. Walnut shaped eyeglasses are an ideal choice, but frames that are as wide or wider than the broadest part of your face would work as well.
These individuals have a broad forehead and jaw that gives the appearance of the face having equal and straight sides. These face types usually do well with narrow or oval-shaped frames which will help to soften their features.
Your hair color may play a role in the best frame color for you. Individuals with warm hair colors (brown or black hair) do best to choose a lighter colored frame to add contrast. People that have hair on the lighter end of the spectrum can pick just about any frame color that they would like and may look to other features like eye color or skin tone to help make their decision.
Skin tone has the opposite effect from hair color on the best choices for the frame color. Those with lighter skin hues do best with similar frame colors, and those with warmer skin tones can pick and choose options that they enjoy the most.
Above all else, you should pick a frame that you like best. There may be additional factors to consider when choosing the right frame for you, but perhaps the most important factor is your overall happiness and comfort.
Just a few decades ago, computer vision syndrome (CVS) was not known or understood. However, with an increase in the role of computers in our lives, it has become an increasingly common issue. Researchers believe that 50-90% of people who use computers in their daily lives have experienced CVS to some degree. The amount of time that many people stare into a computer screen is increasing, which puts significant strain on our eyes.
CVS is not considered a single specific problem, but a suite of issues. And with the increased use of school computers, tablets and smartphones, children are also becoming more susceptible to CVS.
This syndrome is similar to many other repetitive motion type conditions such as carpal tunnel syndrome. Problems can start because as we are reading text on a screen, our eyes move in a repetitive motion throughout the day. Once the issue has started, continuing the same behavior can worsen any symptoms. While reading alone uses the same motion, digital screens add flicker, contrast, glare, and light that all put additional strain on our eyes.
Issues may also be accelerated if you should be wearing some type of corrective lens, but don't, and are therefore putting additional strain on your eyes.
Aging can also speed up the progress of these issues. Around the time that people turn 40, the lenses of the eyes begin to harden due to a disease called presbyopia, which affects your ability to see closer objects.
There is currently no proof that CVS causes long-term vision impairment or blindness. Continuing to use a computer or any other type of screen can continue to be an annoyance or reduce your ability to see properly. Some of the warning signs of CVS are:
Red or dry eyes
If you don’t properly treat CVS when these symptoms occur, you may begin to notice that you suffer from a decrease in overall quality of life or job performance.