The Sense Of Nearsightedness. Nearsightedness is a disorder in the eye that causes the sufferer cannot see objects close to the clear or opaque look, but usually the remote objects quite clearly visible.
Nearsightedness, also called hyperopia, often associated with as a matter of refraction.The eye will become easily tired if you have nearsightedness.
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| The Sense Of Nearsightedness |
Symptoms Of Nearsightedness
Nearsightedness generally occurs in people aged over 40 years due to the reduced ability of the eye as you get older. However a small percentage of children can also be born with this condition.
The lens of the eyes of children more flexible compared to adults, so usually the children who suffer from nearsightedness does not always have problems with their sight. However, nearsightedness in children should soon be overcome because it can cause complications, such as lazy eye (amblyopia) squint eyes (strabismus). Checking the condition of the eyes of your child to the doctor to find out if there is a problem with the vision.
Here are some of the symptoms of nearsightedness.
- Headache.
- Should wink to see clearly.
- Watery eyes or reddish colored.
- Difficult to read.
- The eye feels tired after focus see objects up close, such as using a computer or reading.
- Distant objects are seen clearly, but close objects appear out of focus and blurry.
Cause Of Nearsightedness
Nearsightedness occurs because light entering the eye is not focused in the retina, but focused in tow. This happens because the cornea is too curved or flat, the lens is less thick, and the eyeball is too short.
Try to fix the problem of eye lens refraction is focused behind the retina in a way to be more bold. But in people with nearsightedness, these things are not quite as effective.The result of the vision will be blurry because light can not be focused correctly.
The following are some of the factors that could cause nearsightedness.
- Genetics. Some inherited diseases of the nearsightedness by parents.
- Age. Nearsightedness is more common in people over the age of 40 years, but there is still the possibility can be experienced by any age.
In addition to the factors mentioned above, there are also other factors which may cause the occurrence of nearsightedness, namely, the tumour around the eye, diabetes, problems of blood vessels in the retina or foveal hypoplasia, and eyes that are underdeveloped while the baby is still in the womb or small eyes syndrome called.
Diagnosis Of Nearsightedness
Most vision disorders in children can still be cured, that is why it is important to detect early on by performing an examination of the eyes in children on a regular basis.Permanent eye damage can occur if it is not doing the treatment.
Diagnosis of nearsightedness at an early stage will facilitate doctors to give proper care to address them.
Eye tests done to check your vision and eye health conducted by the optometrist. Eye examination usually begins with a question that will be posed by the optometrist as to whether there is a specific vision problems, and if there is, how long it lasts.Optometrist will also ask if you're undergoing treatment or suffer from certain health disorders.
- A test of vision. This test is usually done with you read a series of letters on each subsequent row became more small or called with a Snell en chart. This test aims to check eyesight, whether at close range or medium range. If you use glasses or contact lenses, do not forget to take her because of this test will be carried out with and without glasses or contact lenses.
- Eye tests. This test is done to check the inside of the eye by using a tool that illuminates the pupil or is usualy called of talmoskop. In addition, this test also checks the coordination and movement of the eyes, pupil reflex, and if there are conditions such as diabetic retinopathy and glaucoma.
If based on test results that do note that there is problem in the eye, usually the optometrist will discuss eyeglasses or contact lenses that suit you. And if the problem in the eye badly enough or require more medical care, you will be referred to the physician's expert eye or oftalmologis.
Treatment Of Nearsightedness
There are several things that can be done to overcome the nearsightedness as will be explained below.
Contact lenses
Contact lenses can be used to overcome the nearsightedness and has the same function as eyeglasses, but due to light and not visible, some people prefer to use contact lens than spectacles.
Consult your optometrist to know contact lenses to suit you, because contact lenses are available from a variety of materials and designs. Eye infections can happen if you don't keep clean contact lens properly. Ask your doctor or optometrist about the use and storage of contact lenses is good and correct.
Eyeglasses
The glasses used to cope with nearsightedness have lens edges thicker than the middle section or referred to with lens is convex, which can make focus accurately because the rays of light would fall over the retina.
The severity of the nearsightedness experienced will effect on thickness, weight, and the arches of the lens must be used. As you get older, the lens of the eye will be the more rigid and may require a more powerful glasses.
Operation
The most reliable operations to cope with nearsightedness is laser surgery to improve cornea so that light arches can be more focused.
Laser surgery has risks of damage and infections that are smaller than the traditional surgery because in the laser surgery does not use a tool that enters the eye.
Patients undergoing laser surgery does not need to be admitted in the hospital. This treatment typically takes about an hour. Patients who had undergone laser surgery must be checked myself back to the clinic or hospital.
The following are the three main types of laser surgery that can fix nearsightedness:
- In situ laser keratectomy (LASIK). LASIK is surgery that uses a laser to change the shape of the cornea and is the most frequently used procedures.
- Photorefractive keratectomy (PRK). PRK uses laser to remove corneal tissue slightly so that change the shape of the cornea.
- Laser epithelial keratomileusis (LASEK). LASEK also uses a laser to change the shape of the cornea, but use alcohol to loosen the surface of the cornea before finally lifted.
Among the three main types of laser surgery as mentioned above, LASIK is a type of operation the most widely chosen because it has several advantages, namely the healing process relatively faster and patients almost do not feel pain. But LASIK can only be done if the corneas thick enough to reduce the risk of side effects and complications such as vision loss due to LASIK has a more complicated procedure.
If the cornea is not thick enough to perform LASIK surgery, so patients can perform surgery PRK or LASEK. But a second operation that requires a longer recovery time.
Not all patients nearsightedness can perform laser surgery. The following are some patient conditions that do not fit the laser surgery: have other eye problems such as cataracts and glaucoma, a disease that affects the immune system such as rheumatoid arthritis or HIV, pregnant or lactating women, diabetics, and presbyopia sufferers or nearsightedness due to the aging process.
Age factor can also influence the type of treatment that is appropriate to do. Vision in people aged under 21 years of age is still changing and should not be performed laser surgery. For those of you who are over the age of 21, make sure that in the last two years, the lenses of your eyes do not experience many changes before undergoinglaser surgery.
Consult your eye condition with the doctor before deciding to perform laser surgery because although rare, but still there is the possibility of complications as follows.
- The vision be reduced or lost due to a cornea becomes too thin or called by ectasia.
- Contracted microbial keratitis caused by eye corneal infection.
- If the amount of tissue taken from the cornea of the eye is wrong calculation then vision could deteriorate.
- Halos are visible around rays of light.
- Eyes feel dry.
Prevention Of Nearsightedness
Nearsightedness is not preventable, but there are some things you can do to help protect Your eyes and vision.
- Consuming foods that are nutritious vegetables.
- Use good lighting or lighting.
- Do not smoke.
- Eye conditions checked regularly.
- Protect eyes from direct sunlight.
- Using the right glasses.
- Controlling chronic health problems such as diabetes.
- Recognize the symptoms of disorders of the eye.
Complications Of Nearsightedness
Nearsightedness can cause some complications or problems such as the following.
- Amblyopia or lazy eye. This happens due to an eye squint or other eye disorders like cataracts, which causes one eye to be more dominant.
- Strabismus or squint eyes. This occurs when both eyes focus on different objects, not caused by the parallel position of both eyes.
- Safety barriers. If nearsightedness is not handled properly you should not drive a vehicle or operate heavy machinery for the sake of the safety of yourself and others.
- The reduced quality of life. Nearsightedness may be limiting routine to do and affect quality of life.
Complications of nearsightedness in adults are rare, while double vision or focus monocular, eye, lazy, and eyes squint more often experienced by children who suffer from severe levels of nearsightedness.
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