That is a GREAT question!
Advances in contact lens technology have led to the development of more and more types of contact lenses. The Problem is, which one is best for you? Which is the most comfortable and which one is the safest?
So here is the breakdown of the TYPE of contact lenses that are out there:
HIGH OXYGEN / SILICON HYDROGEL
Leading the way in the newest technological developments has been the advent of silicon hydrogel disposable contact lenses. Silicon hydrogel lenses allow better oxygen permeability or breathability compared to regular hydrogel contact lenses. This has long-term health benefits for your eyes, allowing you longer wearing time, excess moisture, and eliminates the long term affects of cleaning solutions on your eyes. This helps keep the eyes healthier and happier.
Since the launch of silicon hydrogel disposable contact lenses, the technology has constantly improved, resulting in softer, more comfortable lenses. The range of prescriptions available in these materials is continually expanding. Silicon hydrogel lenses are available in several different lens materials and designs, including daily disposable, two-week or monthly disposable and multifocal lenses. Silicon hydrogel lenses may be suitable for you to sleep in according to the FDA, however, most ophthalmologists (like us) and most optometrists will never recommend it and in fact, most feel that it is dangerous to sleep in ANY contact lens.
RIGID GAS PERMEABLE LENSES
Rigid gas-permeable (RGP) lenses are made from hard, durable plastics that transmit oxygen. These are typically theleast prescribed, but most affordable lenses out there, however, they take a little longer to get used to compared to soft lenses. They offer excellent visibility and clarity, especially in patients with astigmatism or irregular corneas and they are particularly good lenses for conditions such as keratoconus and other rare corneal conditions. These lenses typically last a year and then need to be replaced.
COLOR CONTACT LENSES
To change or enhance your eye color, these are available in a range of colors with or without prerscription. You can even get “Wild Eyes,” which are contact lenses with designs and fun colors, perfect for an occasion like Halloween. Color contact lenses are available in daily, monthly disposable and soft conventional designs. It is important to know that an ophthalmologist should fit all color contact lenses, even those without prescription, as the color contact lenses you find in costume stores are extremely dangerous.
MULTIFOCAL (or bifocal) CONTACT LENSES
Multifocal contact lenses combine distance and near vision. Multifocal contact lenses are available in several different disposable and high-oxygen silicon hydrogel materials, including daily disposable lenses. These, however, can be quite pricey and take a while to get used to. Many patients often quit using them before they take the time to get used to them. By wearing multifocal contact lenses you have the advantage of not being dependent on reading glasses OVER the contact lenses. Many patients often prefer mono-vision (a plain contact lens in one eye for distance and another contact lens in the other eye for near) to multifocal contact lenses.
DISPOSABLE SOFT LENSES
The most popular contact lenses today are soft disposable lenses. These lenses are made of soft, flexible plastics known as hydrogels or, in more recent years, silicon hydrogels. Disposable contact lenses are available to suit most prescriptions and are generally very comfortable, and do not require much time to get used to them. Disposable contact lenses are available in daily, two-weekly and monthly designs and are to be replaced at these intervals. People who wear daily disposable contact lenses benefit from a fresh pair of lenses every time they wear contacts, providing excellent comfort and eye health. These lenses require no cleaning or maintenance as they are replaced daily. Two-week and monthly lenses do require maintenance and cleaning solutions.
Although contact lenses are widely prescribed, getting a prescription for them is NOT like getting a prescription for glasses. Glasses prescriptions only require a power and a pupillary distance (distance between the two eyes). Contact lenses however come in all shapes and sizes, besides different powers as well. This requires special measurements to measure how round and how large your eyeballs actually are, so the contacts can rest on your eyes properly and safely. Poorly fit contact lenses can be extremely dangerous, even when they are properly cared for. Many insurances and vision plans DO NOT cover these tests and often thee is an added fee for these tests.
You can book in a contact lens consultation with the front desk. When you call, however, please be sure to mention that you would like a contact lens fitting/consultation, so you can have an appointment with one of our contact lens specialists. Our specialists and ophthalmologists will be able to advise you on what’s the best type for you. After the consultation, you can then order your lenses from us. the specialists and ophthalmologists will also be able to advise you on contact lens care and maintenance to ensure your eyes stay healthy and your vision clear. Call 718-728-0224 to book your appointment today, or click on the “contact ust” area of the website to book it online now.
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Thank you for the article on contacts. I use soft contacts and contacts especially for astigmatism. What makes these contacts different from others? Also with regards to colored contacts, why are store bought ones dangerous? Thank you in advance.
I apologize for the late reply. First of all, thank you for reading my post. Now to answer your questions:
1) Contact lenses for astigmatism are called “Toric” Lenses. They are not a perfect sphere like regular contact lenses. They are oval-like shaped and therefore correct the astigmatism. However, everyone has a different degree or direction of astigmatism, so the oval shape needs to be in different directions for each person. The way this is accomplished is by making the bottom of the contact lens thicker, therefore making it heavier at the bottom. This allows the direction of the contact lens to stay constant and in the same direction, even if the contact lens shifts. It always reverts back to heavier side down. If you were to look at the lenses under a microscope, there is a marking at the bottom of the lens, which should always be fact down. This allows the doctor to confirm that the fit is correct. If the marking is off center, then the eye doctor knows that the direction is off, therefore needing adjustment.
2) In terms of store bought color contacts, there are a few reasons why they are more dangerous. Firstly, all contact lenses come in many shapes and sizes. Measurements need to be done to determine how large and how round or curved the contact lens needs to be for that particular patient. Store-bought lenses come in one shape and one size. Therefore, it will likely NOT fit your cornea properly. If it is too loose, it will constantly shift and damage your cornea. If it is too tight, it will stick on to your cornea like a suction cup. This can potentially cause two problems. It can suffocate your cornea because it is too tight. It can also suck on too much, therefore, when you take the contact lens out, the top layer of the cornea can come with the cornea. This can be extremely painful and risk horrible infections. Secondly, Prescription contacts have small microscopic holes on them which are meant to allow the flow of oxygen through them. Over the counter contacts are meant for one time use only, therefore do not have those holes. So basically, when you wear them, there is no oxygen getting to the cornea. This is a recipe for disaster, especially if you use it more than once.
Thank you for your time and feedback.
Thank you for reading the blog post. To answer your question about astigmatism contact lenses (toric lenses), your astigmatism lenses have an extra power built into the contact lenses. There are 2 parts to an astigmatism prescription…Part 1: Near sighted or far sighted portion. Part 2: Astigmatism correction which is always in a certain orientation, documented by a “degree of axis.” The degree of axis is the direction your astigmatism goes (up, down, diagonal, steep diagonal, etc.). Due to the need for the axis to be in an EXACT orientation, the contact lens is weighted at the bottom to assure that the axis degree is precisely lined up with what you need. Any small shift in the contact lens will blur your vision, so the weight helps prevent that and makes sure the lens is lined up properly.
Store bought contact lenses (such as costume stores) are extremely dangerous. Every year, after Halloween, we have patients pour in to the office with horrible infections or injuries from the costume contact lenses. If its purchased in an eye-professional store (eyeglass store, etc.) then it is assumed to be safe, because they would fit you properly.
how much do these cost?
Please call our office and ask for our contact lens specialists. They will discuss prices for you, because there are many brands and types of contacts out there, so it depends on what kind you want
That all depends on which type of lens you need/want. The prices vary widely, anywhere from $35 for a 3 month supply, and up to $155 for a 3 month supply for specialty lenses. It depends on your needs and your wants.