An ocular condition occurs when the rays of light focus on two points instead of one to focus inside the eye.
In addition, a blurred vision is presented because when the light must be positioned in the retina, it makes it difficult to focus.
The exact cause is unknown; although studies indicate it may be hereditary, some medical specialists suggest that all individuals present some astigmatism.
This is because it is rare to find perfect curves in the cornea and the ocular lens, but in some cases, it is more severe than others and can be corrected with lenses.
Symptoms of Myopic Astigmatism
Some of the symptoms that people with this ocular condition have are:
- Difficulty in focusing correctly.
- Eye fatigue, exceptionally when long-term readings are maintained.
- Sensitivity to light.
- Sudden pain in or around the eyes.
- Burning sensation
- Blurred vision when trying to focus on distant objects.
This ocular affection generates a dependence on the use of lenses or glasses. Therefore, the affected person must frequently resort to the ophthalmologist to verify if the condition is maintained or has increased.
In addition to myopic astigmatism, there are other eye conditions within the astigmatism family, such as:
Mixed astigmatism occurs when the two principal meridians are hyperopic or myopic.
Hyperopic astigmatism occurs when light rays are focused behind the retina.
Corneal astigmatism: this condition develops when there is an abnormal curvature on the posterior or superior surface of the ocular cornea.
Regular astigmatism: arises when the refraction changes gradually in power from one central meridian of the eye to the other, with the two meridians always at right angles; this condition is also classified as contrary to the rule when the meridian of greater refractive power tends towards the horizontal.
Irregular astigmatism is formed when the curvature varies in different parts of the same meridian or in which the refraction in the successive meridians differs irregularly.
Mixed astigmatism: One central meridian is hypermetropic and the other myopic.
How is Myopic Astigmatism diagnosed?
The specialists in the condition or ophthalmologists perform an ocular study called the retinoscopy test, which involves projecting light in the patient’s eye vertically and horizontally to diagnose astigmatism.
In the case of myopia, a visual acuity and focus test is performed.
This ocular condition can be treated in two ways:
The most frequent solution and the first or most recommended by ophthalmologists is the use of glasses or lenses with formula. This helps to improve the defect of the cornea.
In some cases, they tend to correct the defects that astigmatism generates on a large scale.
The lenses’ effectiveness is presented because they consist of a spherical surface that helps correct myopia and a cylindrical one that improves astigmatism.
Contact lenses are usually not recommended and cumbersome for those who suffer from this condition. They are generally difficult to keep fixed in the eye without moving throughout the day.
On the other hand, refractive surgery can be an immediate and, in many cases, definitive solution. If the condition is not severe, the patient can be in perfect condition when performing eye surgery. It is not necessary to use glasses or contact lenses with corrective formulas.
Laser surgery has had an acceptance in most cases that require or want a surgical intervention to eliminate the condition. This technique has been on the market for more than 20 years and is a safe and painless procedure.
Ocular operations have an effectiveness percentage of 95%, but the side effects are usually dry eyes or visualize rings.