Farsightedness
La farsightedness is a refractive defect what happens when the light that enters the eye reflected from behind the retina, causing blurred vision of objects that are nearby.
This condition not considered a disease ophthalmological, but a vision failure.
Fortunately, farsightedness can be corrected so much form temporary like final.
Farsightedness
La farsightedness is a refractive defect what happens when the light that enters the eye reflected from behind the retina, causing blurred vision of objects that are nearby.
This condition not considered a disease ophthalmological, but a vision failure.
Fortunately, farsightedness can be corrected so much form temporary like final.
What is hyperopia?
La farsightedness is a refractive defect what happens when light rays that penetrate the eye, instead of converge in the retina they do behind it. This causes blurred near vision, that is, farsightedness.
Against further is found the projection point of the retina, the greater the hyperopia. When the light is projected in front of the retina speak of myopia and when it is projected at various points is astigmatism, two very common refractive defects that can occur simultaneously.
This condition can take place for three main reasons:
- The eye is very short.
- La lens power is very low.
- La cornea has less curvature than normal.
It is common for the farsightedness be present from birth and improve over time, however, in other cases, the condition may worsen during growth and may be necessary. wear glasses or contact lenses To correct the vision.
As a result of a hyperopic eye, vision becomes fuzzy at the time of observing nearby objects.
Unlike adults, not all Children with farsightedness experience blurred near vision, since the lens tries to compensate for refractive error During his accommodation process, that is, he increases his effort to enhance his contracture through the muscles that surround him.
However, the constant forced accommodation of the lens can cause headache, Fatigue y visual fatigue, reason why there are people who present symptoms of farsightedness without being diagnosed with said condition.
La farsightedness may or may not be accompanied by astigmatism and it mainly affects young children because their visual system is in full development. For this reason, many children have this condition until their vision is fully developed. This refractive error cannot be preventedThat is why it is important to know your symptoms to correct them in time.
Causes
Hyperopia can be related to several factors. Sometimes it develops because the crystalline, the natural lens of the eye, has poor focusing power that prevents the image from being projected onto the retina.
On the other hand, it also occurs when the eyeball is shorter than normal. In fact, all newborns are believed to be somewhat hyperopic, and as the eyeball develops, the defect disappears.
Like myopia and astigmatism, farsightedness can run in familiesThus, having hyperopic relatives increases the risk of suffering from this refractive defect.
It is relatively easy for us to get confused between farsightedness and presbyopia, since both defects cause difficulty to see up close, but originate from different causes.
To see the difference more clearly, presbyopia usually manifests from the age of 40, due to the loss of elasticity and power of accommodation of the lens. It is the consequence of the natural aging process.
Symptoms of farsightedness
The main symptom of hyperopia is the blurred vision close up. Very often, in people with farsightedness they have to separate the objects at a certain distance to be able to see them better or they have to increase the font size of the mobile phone to be able to read better.
Others symptoms of farsightedness are:
- Difficulty seeing objects up close, but not far away.
- Headache.
- Crossed eyes or squint, especially in young children.
- Eye fatigue.
- Headache when reading.
- Many people with this problem have no symptoms beyond blurred vision.
- Over the years, hyperopia begins to affect far vision as well.
How is it corrected?
The first step correct farsightedness es assist the ophthalmologist to evaluate the vision and degree of the condition and determine what the best option for your treatment.
Usually in case of children with a mild degree of hyperopia, the best way to correct it is through glasses or contact lenses They are made with a specific formula for each person. This formula is offered by the ophthalmologist once he performs the relevant tests to diagnose this condition.
In adultsIn addition to the use of glasses and contact lenses, we can offer a definitive treatment by refractive surgery to correct farsightedness, especially in more advanced cases, when this condition significantly affects the person's quality of life.
Hyperopia operation
If the person wants stop wearing glasses or contact lenses we definitely have several surgical options. Among them we have the ocular laser surgery (FemtoLasik, LASIK y PRK) And the implantation of an intraocular lens.
During the hyperopia operation CAN simultaneously eliminate myopia, astigmatism and presbyopia in the same surgical act.
FemtoLasik
Refractive laser surgery FemtoLasik, is the technique of laser eye surgery to correct the most modern farsightedness that exists today.
It looks a lot like the Lasik technique. The difference between the two is that in the FemtoLasik, the cut of the cornea where the Excimer laser, is also done with laserplatforms, femtosecond, and not with a blade, making the FemtoLasik technique the safest option that exists to eliminate farsightedness.
LASIK
The technique Lasik it consists in removing a superficial layer of corneal tissue by means of the microkeratome cutting to subsequently apply the Excimer laser. The laser is previously programmed to act in the eye according to the needs of each person.
Once the laser is applied, the tissue is placed again without stitches. The improvement of vision and recovery after surgery is almost instantaneous.
PRK
The surgical technique PRK consists remove a part of the epithelium using an alcoholic substance.
Subsequently, we apply the Excimer laser to eliminate farsightedness and then the epithelium is repositioned and some are added protective lenses external use that the person should use until the doctor indicates.
intraocular lens
We use this procedure in those people who do not yet have presbyopia or that your cornea does not allow a laser intervention.
La refractive surgery with intraocular lens it consists of making a small incision in the eye to inject a lens designed specifically for that patient. The lens is placed behind the iris and ahead of the lens and will make the function of a contact lens.
Who can have farsightedness?
To know if a person is a candidate for refractive surgery to correct farsightedness it is necessary to go to a consultation with the ophthalmologist to evaluate the degree of refractive error and decide if surgery is the best option in your case
Usually the people to whom this type of procedure is directed have about 5 diopters, that is, an important degree of farsightedness. It is also important to comply with a series of conunes requirements in vision correction surgeries, such as:
- Be older than 18 years.
- Not being pregnant or during lactation.
- Not suffer from diabetes, glaucoma o Diabetic retinopathy.
- Lack injury nor have suffered trauma in the cornea
- Not having submitted no variation in the degree of farsightedness for 1 year
Postoperative
All the techniques of refractive surgery to correct hyperopia are ambulatory, duran about 15 minutes, are made with local anesthesia through drops and offer a almost immediate improvement of vision
Conclusion simple and low risk procedures so that No. they deserve a postoperative pain or thorough care, on the contrary, the person may resume his normal life after a few days.
This feature does not exempt the patient from follow the ophthalmologist's instructions to the letter on the guidelines that are marked, in each case, for the postoperative period.
