Keratoconus is known to experts as a non-inflammatory condition affecting the cornea. It usually causes weak vision due to irregular astigmatism. Studies show that for mild keratoconus, eyeglasses may still help. When your keratoconus progresses, you need specialized contact lenses to improve your vision. Specialists have several lens options available. Here are the contact lenses from which you can choose based on your needs.
Eye specialists say that these special contact lenses do not conform to your cornea’s surface. RGPs are the most common contact lenses used for treating keratoconus. They are hard corneal lenses that always maintain their shape. RGPs are also made of breathable material that allows oxygen to reach your cornea. This enhances the overall health of your cornea. Rigid gas permeable contacts are also easy to maintain, put on, and remove. Specialists recommend RGPs because these lenses can correct your vision significantly. Even so, other patients cannot tolerate long hours of wearing them.
As large-diameter gas permeable contact lenses, scleral lenses are popular for patients with keratoconus. They can be as large as a nickel to as large as a quarter. These lenses keep a firm sphere as it goes over your cornea and settles on your sclera. The size of scleral contacts allows you to fill the lens bowl with a non-preserved saline solution before you place them on your eye. You may find this procedure tedious, but most users gain excellent comfort and vision with these scleral lenses.
These disposable contacts are made of advanced hydrogel. Vision specialists say that soft lenses are not a common option for keratoconus cases. Despite giving less visual clarity, these lenses may be the only choice for those who cannot tolerate hard lenses.
Also known as tandem contact lenses, piggyback lenses are a combination of soft lenses and gas permeable (GP) lenses. This technique involves placing a soft contact lens on your cornea first. Then, a gas permeable contact lens settles above the soft contact lens. Eye doctors agree that this method takes more time and effort, but it is beneficial. Clinical reports say that using piggyback lenses prevents the hard lens from irritating your cornea because the soft contacts protect it.
This type of lens has a hard, gas permeable (GP) lens center, surrounded by a soft lens skirt. Hybrid lenses provide the comfort of soft lenses and the visual clarity of hard lenses. The rigid GP center also allows oxygen to enter your cornea. The soft lens skirt doesn’t make your eyes uncomfortable while wearing the lens for hours at a time. Experts note that hybrid contacts help make your eyes healthier because they resist deposits and they don’t contain water. These traits make hybrid lenses undesirable for bacteria to proliferate.
When you have advanced keratoconus, you need to wear contact lenses that fit your needs. Here at Noble Vision Center, we can help you with our hybrid, RGP, scleral, piggyback and specialized soft contact lenses. Feel free to visit our clinic in Greensburg, Pennsylvania, for a walk-in consultation. You can also call us at 724-302-3700 if you want to make inquiries or schedule an appointment.