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Astigmatism is a refractive error caused by an irregular shaping of the cornea (mismatched curves with different radius of curvature on the main axes). This causes light to be dispersed to several points of the retina instead of focusing on one point.
LASER REFRACTIVE
SURGERY IN VALENCIA
Dr. Alonso clarifies the most frequent doubts regarding laser refractive surgery.
The expertise of our medical team combined with the use of state-of-the-art technology guarantee the best results for our patients. Schedule a non-binding consultation and we will recommend you the best treatment option for your condition.
Symptoms of astigmatism include blurry or hazy vision at any distance, distorted vision, visual fatigue, headaches, eye discomfort and irritation. Patients that suffer astigmatism tend to squint to see more clearly.
The following types of astigmatism can be detected in patients:
Simple astigmatism
It only appears on one meridian. One axis is focused on the retina while the other axis focuses in front of the retina or behind it.
Compound astigmatism
It affects one meridian and is associated with myopia or hyperopia. Both axes focus before or behind the retina.
Mixed astigmatism
Light rays come to two focal points, one of which is before the retina (myopic) and the other of which is behind the retina (hyperopic).
HOW IS
ASTIGMATISM
CORRECTED?
Astigmatism is usually corrected with eyeglasses or contact lenses. Patients who do not wish to rely on optical correction may choose to undergo refractive surgery.
Different surgery methods are available for the correction of astigmatism. A personalised monitoring of patients is required to adapt a given treatment to the characteristics of the eye.
LASER
PROCEDURES
In cases where Excimer Laser Surgery is carried out it is possible to use a customised Wavefront TM guided system which reduces the induction of high order aberrations and grants a high quality vision.
Intraocular lens implants represent a possibility to correct refractive errors in patients whose eyes do not meet the criteria for laser surgery. Intraocular lenses may be:
PIONEERS IN
OCULAR SURGERY
The expertise of our medical team combined with the use of state-of-the-art technology guarantee the best results for our patients.
“An excellent clinic with outstanding patient care. It is clearly visible when professionals love their job. I will never change to another ophthalmologist”
María Sempere.
“My experience was satisfactory, results were excellent after surgery and I received special care all the time. The whole staff are great professionals”
Carmen Valles.
“I had surgery in this clinic and recommend it to everyone. I received excellent treatment and care. I’ve seen few doctors as proficient and dedicated as doctor Alonso.”
Jose Miguel Carbonell.
PRICING AND
FINANCING
At CLÍNICA RAHHAL we want treatment to be affordable for our patients.
FREQUENTLY
ASKED QUESTIONS
Select any of the following FAQs from our patients and check the answers. If your doubts are not solved please use the contact form below to get in touch with us.
Refractive errors (myopia, hyperopia, astigmatism) can only be corrected when the patient’s prescription is stabilised, which occurs around the age of 20.
Yes, any of the procedures currently used (laser and lens implants) allow the simultaneous correction of both errors.
The eye must remain as stable as possible during surgery, therefore patients lie on a treatment table with their eyes fixed on a red light on the Excimer Laser machine.
A safety device called eye tracker compensates for involuntary eye movements following up the eye at milliseconds intervals and adjusting the direction of the laser pulses. In case of sudden movements the safety system fully stops the treatment.
It is a quick procedure. Patients remain in the surgery room for 15-20 minutes on average. Just a few seconds of that time are used for the application of the Excimer Laser. The remaining time is used to prepare the patient’s eye for surgery.
Refractive surgery procedures are carried out using topical (local) anaesthetics (eye drops). Patients do not experience any pain during the operation.
LASIK and PRK procedures have very simple post-operative processes which require only eye drops and artificial tears.
After surgery it is recommended to rest at least for 24 hours. Most work activities can be resumed after 48 hours. Patients must wait at least a week to resume any sport activity.
During the pre-op check up, our medical team will examine the condition of the cornea, namely corneal width and number of dioptres to be corrected. Laser treatment vaporises corneal tissue. The amount of extracted tissue is proportional to the number of dioptres to be treated. Intraocular lens implants may be considered if prescription is very high.
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