A patient with a retinal disease sometimes gets cryotherapy, also known as retinal cryopexie. During cryotherapy places the physician a very cold metal probe against the wall of the eye so that all the layers of the eye freezing, even in the inside of the retina of the eye. This in turn keeps the retina fixed in the eye. Cryotherapy namely scar creates an adhesive which seals the retina against the wall of the eye. The effect of cryotherapy is similar to laser treatment, but the treatment is done with cold instead of heat. Since mid-1960 ophthalmologists use this form of therapy.
For the treatment
Cryotherapy advantage with respect to laser treatment
The doctor uses cryotherapy to treat retinal detachment. He freezes the retina around the detachment, so that an adhesive scar around the detachment is created that is similar to the scar of a laser treatment. However, there are many other ways in which the doctor cryotherapy bet: advanced glaucoma, neovascular glaucoma, retinopathy of prematurity, peripheral uveitis, retinal toxoplasmosis, disease Coats, diabetic retinopathy, retinal vasculitis, larva migrans in the eye, malignant peripheral melanoma of the choroid or jet body, retinoblastoma, metastatic lesions to the choroid, conjunctival epithelial neoplasias, basal cell carcinoma of the eyelids and recurring trichiasis.
The treatment has a duration of about fifteen minutes. Furthermore, the patient can go home after treatment because the treatment is done on an outpatient basis. Before treatment, the patient receives a first eye examination for verification. The patient is then administered pupil dilating eye drops.
The doctor uses only anesthetic eye drops he just below the skin-like covering of the eye injection. The patient usually feels nothing during this injection. Sometimes, the physician injects a narcotic drug under the eye through the skin of the lower eyelid in order to anesthetize the entire eye. This is basically painless, but the patient often feels some pressure. After anesthesia, the doctor uses a headlight and a lens to look at where in the eye just beside the retinal detachment, he should place the cryoprobe. He then freeze the retina around the detachment. These are usually needed between three to twelve separate freezing areas. When the physician places the probe on the eye, forming water crystals, followed by the quick defrosting leading to tissue destruction. Finally, there is healing and scar formation.
The ophthalmologist place immediately after treatment, antibiotic ointment in the eye so that the patient sees blurred. Sometimes this means blurred vision a few days. After the treatment, however, the patient is wearing a bandage over the eyes that he has to persist for several hours after the procedure, if the entire eye is anesthetized. The blink reflex is working to temporarily no longer and an open and uncovered eye results in a very dry eye surface. Sometimes a patient during or after the treatment is still a cold feeling or cold-headache. The patient must not home lubricating ointment or eye drops to take. The eye does need up to ten days before it is completely healed, and it may also notice a few weeks from red.
Since both methods have the same treatment effect, this is largely a matter of personal preference of the physician and the patient. Both of these methods take about the same length, and are also comfortable. A retinal detachment sometimes causes bleeding in the eye where the laser beam locks when it reaches the retina. In such a case, the preferred treatment is cryotherapy, given that the freezing is done "outside-in", and this is not an obstacle of blood into the eye. Cryotherapy is done to lock on the front half of the eye in which a laser does not turn into falls.