Nearsightedness is a refractive error. Refractive errors happen when your eye doesn't shine light as expected on the retina. That centering is called refraction (twisting).
So that you could see openly, light beams should go through your cornea and focal point. The cornea and focal point refract the light so it lands on the retina. The retina transforms light into signals that move to your cerebrum and become pictures. With refractive blunders, the state of your cornea or focal point keeps light from bowing appropriately. At the point when light isn't centered around the retina as it ought to be, your vision is hazy.
Nearsightedness is a typical condition that influences an expected 25% of Americans. It is an eye centering problem, not an eye disease.
Nearsightedness: Myopia Types
Myopia in children
Myopia in children can be inherited. If a parent has myopia their child may get it as well. Myopia is often discovered in children when they are between ages 8 and 12 years old. During the teenage years, when the body grows rapidly, myopia may become worse. Between the ages of 20 and 40, there is usually little change.
High myopia and low myopia
Mild myopia is called low myopia. Severe myopia is called high myopia. High myopia will usually stabilize between the ages of 20-30 years old.
Individuals with myopia face a more elevated risk of having a detached retina. This is when the tissue lining the back of your eye lifts away or detaches from the eyewall. It is a serious eye problem that can cause blindness. It is vital to visit an ophthalmologist regularly for exams to check the retina. Ask your ophthalmologist to discuss the warning signs of retinal detachment with you.
People with high myopia may also have a more elevated risk of developing glaucoma and cataracts.
Nearsightedness: Myopia Symptoms
Some of the signs and symptoms of myopia include:
eyestrain,
headaches,
squinting to see properly, and
difficulty seeing objects far away, such as highway signs or a blackboard at school.
These symptoms may evolve more prominent when children are between ages 8 and 12 years old.
Nearsightedness: Myopia Causes
Myopia is caused by a cornea that is too steeply curved. It can also be caused by an eye that is longer than normal. In both cases, light rays are concentrated in front of the retina instead of on it.
Some studies have found that augmented near work and less time spent outdoors in childhood both increase the risk for myopia.
Nearsightedness: Myopia Diagnosis
Your eye doctor can diagnose myopia as part of a comprehensive eye examination. He or she will use a standard vision test and ask you to read letters on a chart placed at the other end of the room.
Your doctor will use certain examination devices to learn what is causing myopia.
A retinoscope shines a special light into your eyes that reflects off your retina. Retinoscopy can show whether a person is nearsighted or farsighted.
A phoropter measures the amount of refractive error you have. It also helps demarcate the proper prescription to correct your vision.
Nearsightedness: Myopia Treatment
There is no best method for correcting myopia. The most appropriate correction for you depends on your eyes and your lifestyle. Discuss your lifestyle with your ophthalmologist. Together, you can decide which correction may be most effective for you.
Eyeglasses and contact lenses
Eyeglasses or contact lenses are the most leisurely and most common ways to correct vision problems caused by refractive errors. They adjust your vision so that you can see more clearly. An eye care provider tests your vision and, as needed, gives you a prescription for glasses or contact lenses. Over time, you will need new prescriptions as your eyes change.
There are many options to assume when buying glasses or contacts. Talk with your eye doctor about the lens choices that can meet your vision and lifestyle needs.
Refractive surgery
In most cases, this type of surgery reshapes the cornea with a laser to adjust how light travels through it. Here are some of the more common procedures:
LASIK,
Epi-LASIK,
PRK,
SMILE, and
Refractive lens exchange.
As with any surgery, refractive surgery carries risks of possible complications and side effects. For instance, after having a refractive procedure, you may see glare or rings (halos) around lights. You might also have poor night vision.
Talk with your ophthalmologist about your vision needs and expectations. Together you can explore your alternatives for achieving a better vision.
Orthokeratology (ortho-k)
You may have heard of a process called orthokeratology or ortho-k to treat myopia. It uses a series of hard contact lenses to slowly flatten the cornea and reduce myopia. It involves sleeping in hard contact lenses every night. This has been associated with an elevated risk of serious, vision-threatening eye infections. Vision improvement is temporary. After you stop using the lenses, your cornea goes back to its original shape, and myopia returns.
Low-dose atropine
Low-dose atropine (0.01%) has emerged as an effective approach to slow the progression of myopia in children and adolescents. You use it daily and recent studies appear promising. It also appears to be safer as it avoids the complications of orthokeratology. Low-dose atropine has been adopted by many pediatric ophthalmologists recently.
Additional Information About Myopia Treatment and Prevention
There is no scientific evidence to suggest that eye exercises, vitamins, or pills can prevent or cure myopia.
Download and share these educational posters, infographics, and videos to spread information about myopia and its prevention.
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