Retinoblastoma is cancer that forms in the retina of the eye. Treatments for this type of cancer vary depending on the extent of the cancer, whether the tumor is in one or both eyes and whether the cancer has spread to other parts of the body. Because this type of cancer is so rare, it’s important to have a doctor and a treatment facility that is experienced in dealing with retinoblastoma.
The goals of treatment are:
• Eliminate cancer and save the life of the patient
• Save as much vision as possible
• Save the eye if possible
• Avoid second cancers or recurrence of cancer
Treatment of retinoblastoma may include:
• Surgery – If the tumor is very large, the vision in the effected eye is usually destroyed. In this case, treatment is often surgery called enucleation. During the procedure, the doctor will remove the entire eye plus part of the optic nerve. During the same surgery, an optic implant is placed in the eye socket to take the place of the eyeball. This implant can later be replaced with an artificial eye that will match the real eye in appearance, but will not provide any vision. Once an eye is removed, that side will be permanently blind. If both eyes must be removed, the result is complete blindness.
• Radiation - This involves killing cancer cells or shrinking tumors using high-energy radiation such as X-rays. Radiation can be beamed at the area from outside the eye, or can be given by inserting radioactive material into the body very close to the tumor.
• Cryotherapy– Extreme cold can be used to kill cancer cells and eliminate tumors in a specific area.
• Photocoagulation – This treatment is also called laser therapy. A laser beam travels through the pupil of the eye to burn out the tumor. Risks include damage to surrounding cells in the retina.
• Thermotherapy– This method of treatment used ultrasound, microwaves, or infrared rays to apply heat to the tumor. These rays are not as hot as the laser used in photocoagulation, which may be safer for surrounding blood vessels in the eye.