What does the refractive lens replacement mean?
This term refers the procedure where our biological lens in our eye is replaced with a thin lens. The lens to be replaced with your biological lens is set to the spehere number which will eleminate the need of glasses usage. These lenses will remain in the eye for all life and unlike the contact lenses, they do not need to be removed or re-placed in daily life or any speacial care
For who the refractive lens replacement is implemented?
Today, there are various treatment methods that are used to correct refraction defects like miyopia, hypermetropia and astigmatism. Numerous methods like excimer laser (LASIK, LASEK, PRK), astigmatic keratotomy, clear lens extraction, intra – corneal ring implantation can be added to the list. Among all these methods, frequantly, the most preferred method is the excimer laser (LASIK) method which is also known as laser treatment. However, in order to employ the laser treatment, a certain level of corneal thickness, a certain set up of corneal map and a certain level of sight strenght is requested. Excimer laser treatment cannot be the most appropriate treatment method for your eye in some certain cases. Therefore special alternative treatment methods have been developped for such eyes. One of the safest, most persistent and stabile treatment methods is the refractive lens replacement method.
How does the assessment held before the refractive lens replacement ?
Your doctor will firstly assesst your sight level and determine the diopter value needed. After this assessment the biometric measurement of the lens will be conducted. For the measurement, our personnel will anesthetize your eye with eye-drop and will ask you to apodictially look frontward. The sphere value of the lens will be determined after this short procedure which is completed within afew minutes.
After the refractive lens replacement can any problem occur due to a laser operation or a cataract operation that may be required in future years ?
There is no inconvienece of laser operations after refractive lens replacement.
Will the cataract operation be needed after the refractive lens replacement?
With this procedure, your biological lens is removed. Thus, there will be no possiblity of cataract operation throughout your life.
Before the operation…
The administration of blood diluent medicines like aspirin, coumadine, etc must be suspended a couple of days before the operation. The anesthetist doctor consults with patients to receive general anaesthesia on the fasting duration before the operation. Usually the local anaesthesia is preferred. Patients to receive local anaesthesia can have a light breakfast or lunch before the operation.
The Operation procedure…
Before going to the operation, a tranquilizer will be given to you in your room. The operation can be held under local anaesthesia. That is, your doctor will inject a narcotic drug to your eye’s environs so that you shall not move your eye or feel pain. Usually, no pain is felt during the operation but a small touch feeling can be felt. Since the patients with local anaesthesia are awake durig the operation, they can communicate with the doctor.
After sterilizing your eye, a small apparatus which will keep your eyes open will be placed. A small laceration will be made in the corneal layer of your eye during the operation. Your current lens is removed by using phaco device and replaced with the transparent lens which will free you from the glasses. No suture is made in the eye except certain cases.
The duration of the operation is approximately 5 – 10 minutes.
How will I feel after the operation?
You will be taken to your room for rest after the operation. After having a rest for a couple of hours, its is allowable to go to your house. At the day of operation your eyes will be closed for all day. You may feel pain and irritaion as long as your eyes remain closed. This is normal. Taking pain killers is allowable. One day after the operation you will come for control and the eye – drops that you will use will be prescribed.After the operation, especially in first days rubor, dilution and sensitivity to the light may develop in your eyes. Blurred vision may continue for a couple of weeks and oscillopsia and blurred vision may continue in the day. Such symptoms will expire in upcoming days as you use eye – drops. Absolutely do not smotheringly rub your eyes and pay attention not to let water or soap to contact with your eyes.
What are the risks of refractive lens replacement operation ?
You will be free from using glasses after the operation.
This operation does not eleminate the astigmatism, the degree of current astigmatic defect (depending to the degree) may reduce, may increase or may remain the same. The myopia or hypermetropia will be cured as the lens is implanted. The diopter value of the lens to be implanted is determined by the biometric measurement which is held before the operation. However, each sphere number and structure of each eye is unique. Therefore, no doctor can guarantee for 100 % that the eye will obtain a 20 / 20 vision strenght.
In cases where the astigmatism or myopia or hypermetrobia remains, the second session of excimer laser treatment is allowable. However, the exact information on the particular subject will be provided by your doctor following to the determination of corneal thickness by certain measurements like detailed corneal topography and pachimetry and assessment of corneal map. There is absolutely no risk of cataract in your future life.
In certain and rare cases, retinal decollement can develop in patients to whom the clear lens extraction was applied. The treatment of such situation is possible and very easy and can be implemented in a very short time.
Like in all other surgical operations, there is risk a risk of infection but this is an extremely rare case.
The lens implanted in the operation will clearify your farsighted vision. You will never need nearsighted glasses after the operation.
There is a thin membrane behind the lens to be implanted in the eye. This membrane is called capsule. After the operation, this membrane may thicken and may cause temporary visual decrease in extremely rare cases. The situation can be completely cured with a laser operation (YAG laser) which starts and ends within seconds.