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Torics for Astigmatism
Finding contact lens options for astigmatism used to be quite difficult, but new technology in the world of lenses has expanded the possibilities, providing a greater choice of wearing patterns and materials. We have a wide selection of contact lenses for astigmatism from well-known brands, including Clariti, Acuvue and Proclear.
What is Astigmatism?
Astigmatism is a common condition that causes blurred and distorted vision, caused by the lens or cornea not being entirely spherical in shape. When light enters the eye, it is bent by the cornea and reflected onto the retina which transmits the image to the brain. For people with astigmatism, the cornea is shaped more like an oval than a sphere and this results in light entering the eye at multiple angles rather than in one focused place.
There are three types of astigmatism, based on the meridians of the eyes – these are lines which connect on the opposite point of the eye. If the eye was a clock face, meridians would be the points of 12 to 6 or 4 to 10. Meridians mark out areas of the eye and can cause myopic or hyperopic astigmatism (long or short-sightedness), or a mixture which results in mixed astigmatism.
Astigmatism can also be regular or irregular – regular refers to the cornea being curved in one direction more than the other, which is the most common form of the condition. Irregular astigmatism is rarer and results in the cornea being curved in multiple directions.
What are the Benefits of Toric Lenses?
For people with astigmatism, finding contact lenses that fit securely is difficult because the asymmetrical shape of the eye. It can make the lenses uncomfortable to wear as the lens moves around while on the eye. Standard lenses can also result in a less than perfect visual experience.
Toric lenses are designed specifically for the rugby ball-shaped eyes of people with astigmatism, providing a more secure fit and crisper vision. Some of these style lenses are also weighted at the bottom to stop the lens from moving side to side when blinking, ensuring that the wearer’s vision stays clear throughout the day.
Torics have different strengths at different meridians of the eye, helping them to correct the varying degrees of long or short-sightedness in that part of the eye without affecting the rest. More so than with other lenses, the fit of a toric lens is vitally important as they have a particular orientation in order to stay on the eye in the right way. There are different ways that manufacturers achieve this, either through thin and thick zones, lens truncation which refers to a section of the bottom of the lens being cut off, and ballasting which is where the lens is either thicker or heavier. The axis values of the lenses focus on the location of the astigmatism, while the cylinder value is the strength of power which is used to correct vision problems.
Choosing Toric Lenses
There are a few different factors to consider when choosing toric contact lenses. Many brands have toric versions of their most popular lenses, but it’s important to ensure that the lenses you choose have either toric in the name or are listed as suitable for people with astigmatism. If you have dry eyes, choosing a lens that is hydrating and retains moisture will help to keep your eyes moist and comfortable throughout the day.
Toric contact lenses can be either made from soft and rigid gas permeable (RGP) materials or hard lenses. RGP lenses remain in place more effectively than softer materials but they also take longer for the wearer to adjust to wearing them and can be more delicate. Soft toric lenses are easier to manage, especially for new lens wearers, and are more comfortable.
Some lenses also offer better breathability than others, so this is a feature to look for to keep your eyes healthy, while others have UV blocking technology. Handling tints are a great feature for those who are new to wearing contact lenses. When buying a toric lens, you need to know the power and often the diameter and base curve of your prescription in order to ensure the lenses are accurate for your specific condition. You also need to be aware of the axis and cylinder values.
Types of Toric Lenses
As with other contact lenses, toric lenses come in a choice of patterns to suit the wearer. When you’re choosing the right lenses for your needs, it’s important to think about when and how often you will be wearing lenses. People who tend to wear lenses on occasion or for sport may prefer the convenience of daily lenses while those who are regular wearers often choose monthlies as they are more affordable.
Daily lenses are designed to be worn for one day before being thrown away and then replaced with a fresh pair. This style of disposable lens is perfect for people who don’t wear lenses every day and want the flexibility to change up their wearing pattern depending on what their schedule looks like. Daily lenses provide plenty of convenience and comfort, plus they are the most hygienic option as they are refreshed each day.
Monthly toric lenses can be worn for up to 30 days and are cleaned each night, then stored in fresh solution ready for the next wear. The benefit of monthlies is that they are more cost-effective than daily lenses, particularly for people who wear contacts on a regular basis, but they do come with a strict cleaning routine, so they are less convenient than dailies.
Two-weekly toric lenses are a halfway house between dailies and monthlies. They are good value and have a fresher feeling than monthlies, but still require cleaning each night as do monthlies. These lenses last for two weeks of consecutive wear and then need to be disposed of and replaced with a fresh pair of lenses.
Popular Torics for Astigmatism
These lenses combine the convenience and clear vision of dailies with the corrective power of toric lenses. The Laceron Technology of these lenses retains moisture, so they’re perfect for people with dry eyes, and they also have UV filters to block out harmful rays as well.
The Biofinity Toric lenses have Aquaform Technology that was designed to deliver a greater level of comfort and incredible breathability to keep the eyes healthy. These monthly torics offer great visual clarity and comfort, even for long periods.
A rarity in the world of lenses, the Proclear Multifocal lenses combine the ability to correct astigmatism and presbyopia which causes difficulty in adjusting focus when looking at near and distant objects. These lenses provide clear vision and up to 98% of hydration throughout the day so they remain comfortable even after 12 hours of wear.
Made from silicone hydrogel which makes these lenses incredibly comfortable, the Clariti lenses have been designed with AquaGen Technology to retain moisture more effectively. They have a special aspheric back which maintains an optimal lens position for greater visual clarity.
These lenses were designed specifically for sufferers of astigmatism, providing clear vision even in low light conditions. They allow higher levels of oxygen to pass through the lens too, ensuring the eyes stay as healthy and as comfortable as possible.
Our comprehensive range of well known branded toric lenses to correct astigmatism are at very competitive prices, giving you a considerable saving over High Street suppliers. Astigmatism is the term used when the cornea or lens is not perfectly curved requiring these specialised lenses to correct the vison. These technically advanced lenses will correct both long and short sight and astigmatism.