Treatment of Corneal Opacity


As we know, cornea is a transparent tissue in the front of the eye. The retina in the eye acts like a film in a camera. This part takes photos and transmits them to the brain. The cornea must be transparent enough for images to be well recorded by the retina. If for any reason the cornea has any opacities or injuries, it prevents the appropriate transmission of light and image to the retina; therefore, the images sent to the retina will be abnormal and the visual system will be impaired. In Tehran-Iran Noor Eye Hospital corneal opacity is treated by experienced and skilled ophthalmologists using modern equipment, according to the highest clinical standards of the world.


There are few ways to remove the scar tissue from the surface of the cornea. Determining the best technique for treating corneal opacity depends on the cause of the injury in the first place. The ophthalmologist diagnoses the cause after accurate examinations and uses the most appropriate technique.

It should be noted that mild corneal opacity or ulcers do not require any special treatment. In these cases, special contact lenses prescribed by ophthalmologists can sometimes improve vision. These lenses will be able to smooth out the corneal surface irregularities caused by an ulcer.

Some patients may need corneal transplant in order to remove the tissue “depending on the cause of corneal ulcer”, particularly if the damage is serious and dangerous. In other cases, small damaged tissues are removed with laser therapy, which is a safe technique.

Do not forget that the best treatment technique for this condition is always recommended by the ophthalmologist.


PTK (Phototherapeutic Keratectomy):

In this technique, corneal opacities are reduced using excimer laser. In this case, the possibility of corneal transplant would be low.

Cross Linking:

 This is an in-office eye procedure which takes about 1 hour. At first, riboflavin eye drops are poured into the eye, and then the droplet is activated by ultraviolet illumination. In this method, collagen bonds increase in the cornea, which strengthens the cornea as a result. It should be noted that this procedure stops the progression of keratoconus, but the vision and eye power won’t be affected much.

Types of Corneal Transplant:

Please refer to the relevant section for more information.

Intraocular Lens Implantation:

This type of lenses, including Artisan and toric lenses, are used to treat myopia of 1 to 3 diopters without astigmatism. Using these lenses or INTACS will result in increased integrity and strength, while regularizing the corneal surface in patients with keratoconus. This technique is used for people who don’t tolerate contact lenses. It improves vision by 20% and the patient can use eyeglasses.

Hard Lenses:

 Please refer to the relevant section for more information.

What can cause corneal opacities?

Can corneal opacity in people with Keratoconus be treated?

How long does this procedure take?

How does intraocular lens implantation treat corneal opacity?

Are there any every day activities limitations after surgery?



-What can cause corneal opacities?

The most common causes of corneal opacity are infections and injuries in the eye.


-Can corneal opacity in people with Keratoconus be treated?

Yes, this disorder can be treated with Cross Linking technique.


-How long does this procedure take?

It varies depending on the surgical procedure recommended by the surgeon, but it takes an average of almost one hour.


-How does intraocular lens implantation treat corneal opacity?

These implants are Artisan toric intraocular lenses, which increase the collagen bonds after being implanted, and as a result, strengthen it.


-Are there any every day activities limitations after surgery?

According to the surgical procedure, the ophthalmologist restricts some daily activities for a short time. It should be noted that after most corneal surgical procedures, it is possible to resume light daily activities from the second day, but heavier activities should be avoided for at least one week.

*For further questions contact Tehran-Iran Noor Eye Hospital through its listed contact channels.