I was told that not every everyone is ideal to wear contact lenses. If you have one or more of the following conditions, contact lens wear may be more difficult: astigmatism, dry eyes, presbyopia, giant papillary conjunctivitis (GPC), keratoconus, or post-refractive surgery (such as LASIK or RK).But "difficult" does not mean impossible. People with these conditions can wear contacts quite successfully if fitted properly. For astigmatism (foot-ball shaped cornea), keratoconus (bulging cornea), and post-surgical eyes, there are toric lenses, gas permeable lenses, and hybrid (soft and hard contacts combined) that are options. The material and proper fitting of the lenses is what allows your vision to be best. For dry eyes, the symptoms can include a gritty, scratchy, feeling, a burning sensation, redness later in the day, and blurred vision. If you have dry eyes or GPC (an allergic condition in the eyelids that is common to contact lens wearers) the first step is to properly treat the underlying condition. Secondly, various contact lens materials may need to be tried to see what makes your eyes feel more comfortable. One-day disposable soft lens are excellent for these conditions. For presbyopia, monovision or bifocal contact lenses are required to allow your vision to be clear at both distance AND near.
You may not a suitable person for contacts if you have frequent eye infections, severe allergies, dry eye that is resistant to treatment, a very dusty work environment, an inability to handle and care for the lenses.
Nowadays, almost everyone can benefit from contact lens wear, but not all glasses wearers are suitable for the contacts, if your eyes are usually red or bloodshot or uncomfortable, maybe you not suitable for wearing contacts.in addition, if your vision is not as clear as it once was, please take off your contacts,your lenses may be dirty, or your eyes may be swollen from lack of oxygen.
A person who has dry eye syndrome or the shape of their eye just doesn't allow for them to be able to wear contact lenses. or someone who is so nearsighted that there isn't a contact lens with a strong enough power to correct their vision and some others who are allergic to the disinfecting solution or contact lens.