Types of refractive eye surgery in Iran

Here’s a brief overview of the concept of refractive eye surgery in iran to help you better understand refractive problems and the importance of it in iran.

Factors affecting visual resolution

Factors that affect this are the size of the eye, the power of the lens, and the shape of the cornea surface, which have a decisive role in the quality and health of the image and the proper refraction of light in our eyes. For a person to be able to clearly see different images at different distances, it is necessary for the cornea lens and eye size to fit together and work in harmony.

If these factors are not proportionate and do not work in harmony, He/She may develop refractive errors that can occur in various forms such as Nearsightedness or myopia, farsightedness or hyperopia, astigmatism and Presbyopia that should be treated. Or use tools like glasses to get a better view of their surroundings.

refractive eye Measurement Unit is The Diopter and type of impairment in the patient’s eye. The more myopia and hyperopia you have, the higher your glasses score will naturally be. If your glasses score is negative, it means you have Nearsightedness, and if your doctor’s glasses score is positive, it indicates that you have Farsightedness.

Your doctor will use this score to determine how much you have myopia and hyperopia and what glasses are right for you.

What does 10/10 vision mean in refractive errors?

To measure the level of visual acuity in the eye, a panel is used as a Snellen panel, in which there are different sizes of letter E in different directions, and the patient should be within 16 meters of the baseboard and measure the letter in dimensions. For the ordinary eyes, this panel has 10 rows, and if one person recognizes 6 rows of the valley, his / her eye number is 6/10.

Types of refractive errors

Types of refractive errors

Nearsightedness or myopia

Nearsightedness or myopia in ophthalmology diagnosis means that one can see objects close to themselves, but it becomes difficult to identify distant objects and details that are distant.

Factors that cause myopia in the patient are actually a set of genetic and behavioral factors that contribute most to the genetic disorder, but long-term use of the eye to see near and subtle things can cause myopia.

When you have myopia either your eye is larger than normal or your cornea is over-normal, this causes the light rays coming into your eye to reach a portion ahead of the other retina, and they do not create a clear image because they are not well focused on the retina.

Farsightedness or hyperopia

In this disorder, due to the small size of the eyeball than the normal size and the front of the retina relative, or the low corneal curvature, the light rays that enter our eyes intersect at the back of the retina and therefore do not focus on the retina. And as a result, we don’t see a good picture.

In this disorder, one does not see close objects and distant objects correctly, but his or her vision is more intense in nearby objects. Like myopia, the disease is a major genetic source and is usually exacerbated by age and inability to adapt to the lens.


Presbyopia is one of the natural parts of the aging process where the power of adaptation is reduced to such an extent that he/she is unable to receive a clear image at any distance. In fact, due to age, these patients experience lens stiffness and lack of flexibility, making them unable to adapt images at different distances to their lenses. Lens control muscles are also weak and unable to stretch and flatten the lens to accurately reflect the image on the retina.

These patients usually have difficulty concentrating on objects due to the numbness of their controlling muscles, which is usually very powerful in the teens and the lens is flexible and can fit the image at any distance on the retina.


Astigmatism disorder is a common problem that almost anyone can say has some degree of this problem. The most important factor in the incidence of this disease is heredity.

The normal human cornea is normally round and curved in all axes, but astigmatism occurs when there is a curvature other than the cornea in the patient’s eye. This extra curvature on the cornea causes the asymmetric refraction of light in the patient’s eye, which results is seeing distant and near objects the blur. This blur of light is because the light rays do not fit centrally and directly onto the retina.

The disorder usually develops in the cornea bumps or pits, which cause that the image overlap at two different points in the retina and he/she observes two images at a distance from each other on the retina.

Am I the right person for refractive eye surgery in Iran?

refractive surgery

Obviously, this procedure is not suitable for everybody and since this surgery has its own advantages and disadvantages like other Refractive correction methods, it is necessary to consult your ophthalmologist before deciding to take action on current conditions and diseases and come to Iran for refractive eye surgery.

To reduce the complications of surgery and ensure its long-term satisfactory results, a person must have special conditions to be accepted for this operation.

Note that if you want to do refractive eye surgery in Iran, you should think about someone for your companionship.

Some of the features a person needs to do refractive surgery

  • A person must be at least 21 years old
  • For women, they should not be pregnant or breastfeeding
  • The person should not have any corneal disease
  • The number of glasses or contact lenses should remain unchanged for at least one year

All of these reviews, risks, potential complications, and potential side effects associated with each procedure, are up to the individual himself, as post-operative care – which affects the outcome of the operation – is entirely up to the individual.

Methods of refractive eye surgery in Iran


One of the types of refractive eye surgery is LASIK. This type of eye surgery is used to correct refractive errors such as hyperopia, myopia, astigmatism. In fact, LASIK eye surgery is a combination of microscopic and laser excimer surgery (EXCIMER).

In LASIK, a very thin layer of the cornea called a flap is cut by a microkeratome ( today the femtosecond laser is used instead of the microkeratome to cut the corneal thickness) after the excimer laser is applied, the layer is returned to its original location and this flap sticks to its previous location. LASIK does not require stitches.

Femto LASIK:

Feto-LASIK is a combination of femtosecond laser and excimer laser. Feto-LASIK is one of the most advanced refractive eye surgeries.

The difference between LASIK eye surgery and Feto-LASIK eye surgery is in how the corneal flap is cut. In fact, Feto-LASIK eye surgery is an advanced LASIK procedure where laser beams are used to create microscopic bubbles in the cornea, rather than cutting the corneal flap with a microkeratome. Feto-LASIK is the most reliable method in terms of accuracy and rate of complications. Because the post-operative inflammation of this procedure is less, it can treat up to 10 eye scores and high astigmatism.

Another name for this type of ophthalmic surgery is LASIK without a razor, which is one of the most popular eye surgeries in the world because of its speed of early healing and painless recovery.


It is the oldest and most reliable method for correcting refractive errors and has been performed in the world for over 20 years.

In the archetypal technique, after removing a thin layer of the cornea (epithelium layer) and excimer laser irradiation, they use a contact lens to cover the corneal surface until healing and healing.


LASEK has been performed in the world for more than 10 years and has been favored by physicians in Iran more than LASIK and PRK. LASEK reduces the pain and inflammation of the patient’s eye and allows the patient to perform their daily tasks after about 5 days. Up to 8 eye scores can be corrected using LASEK.

The LASIK procedure is a modified PRC eye surgery. In this type of eye surgery,  a corneal epithelial layer is removed with an alcoholic solution and placed on the corneal epithelial layer after excimer laser irradiation.


refractive eye surgery in Iran


  • Feel less pain after eye surgery.
  • The treatment and recovery period after eye surgery is short.
  • In most cases, after eye surgery, you do not need to wear glasses.
  • Visual improvement is faster after LASIK surgery.


LASIK and Femto-LASIK are complex ophthalmic surgeries that can cause severe visual disturbances if the peeling of the cornea is Inaccurate or the surgeon is inaccurate. Dry eye is more common in this type of surgery.



In LASEK and PRK procedures, there is no complication caused by flap incision. Patients who have undergone LASEK and PRK surgeries are less likely to develop dry eye than those who have undergone LASIK and Femto-LASIK.


The pain after LASEK and PRK is more than LASIK and Femto-LASIK. The recovery period after LASEK and PRK surgery is longer.

Which one is better to do in Iran? LASIK, LASEK, PRK

If you have refractive errors, one of the best things you can do is to perform your refractive eye surgery in Iran but An important question for patients with refractive errors is which eye surgery can be more effective in improving vision but the fact is that each of these eye surgeries is very useful and valuable in its own right, and in fact, their performance and efficacy are the same.

But the reason that makes or disapproves of a particular type of ophthalmic surgery over other types is due to the extent of postoperative complications or specific patient conditions. For example, those who have a thin cornea are not eligible for LASIK or Femto-LASIK and may prefer LASEK or PRK, or those who are athletic or have a blunt-force job, it’s better to use LASIK or Femto-LASIK.

Visiting packages of refractive eye surgery in Iran