The basic tests that the patients are likely to encounter during a routine eye examination includes visual acuity testing, refraction (Estimation of power of spectacles of individual), slit lamp examination, tonometry, dilated retinal examination and other necessary tests, which are prescribed according to the condition of the patient's eye. It may take 1 to 2 hours for a complete eye examination.
Dilating drops are drops that are put into the patient's eye to make the pupils bigger in order to get a better view of the internal structures of the eye. The pupil is like a window to the inside of the eye which is opened wider by the dilating drops. Dilating drops usually take about 20 to 45 minutes to start working. While the dilating drops are instilled, you will be sensitive to light (because more light is getting into your eye) and may notice difficulty in focusing on objects up close. Once the drops have taken effect, the doctor will use a variety of instruments and light sources to look inside the eyes.
Dilatation is very important for people with risk factors for eye disease, because it allows for the most thorough evaluation of the health of the inside of your eyes. After your eyes are dilated, your vision will be blurred for 6-8 hours and you may not be able to see normally. You may require someone to take you back home and advised not to drive.
If the patient has a condition which requires surgery, he or she is advised the necessary treatment and is sent to the counseling department. The patient can clarify doubts regarding the surgery, facilities, charges and insurance claims. Patients can book an appointment for surgery in the counseling department.
What is laser?
Laser is the acronym for light amplification by stimulated emission of radiation. To state simply, it is a special intense form of light that can be focused into a very fine spot. This focused light can coagulate/cut/melt/evaporate/reshape the tissues.
What are the uses of laser in treating retinal diseases?
Laser is used to seal leaking blood vessels in the retina. It can also be used to seal retinal holes and to coagulate leaking new blood vessels.
How is laser treatment done?
Laser treatment is done as an outpatient procedure. The pupils need to be dilated. After instilling local anesthetic drops, a contact lens is inserted into the eye. Laser is usually perceived as bright repetitive flashes. Some types of laser are in the infra red frequency and hence will be in invisible.
Is it painful?
Usually laser treatment is painless. Some discomfort may be experienced. Occasionally pain may be felt. In that case injection of anesthetic can be given to make the treatment painless.
What is the after care required?
The vision will be blurry for some hours. If you had an injection, The eye may be patched for few hours. Avoid heavy physical activity for one to two weeks after laser. You can read and watch television.
What are the results of laser treatment?
Most, but not all patients are benefited by laser. In most diseases of retina, Laser treatment is effective at halting the worsening of the disease. Hence you may not notice dramatic improvement in vision. It takes two to four months for the laser to bring about the changes in the retina.
Are there any risks of laser treatment?
Laser treatment by itself is quite safe. The underlying disease for which the laser is given may not respond well and this might worsen the vision. Very rarely, Laser treatment may accidentally damage the normal retina in which case mild blurring of vision can occur
LASER TREATMENT FOR VARIOUS DISEASES
Laser photocoagulation for retinal tears
Laser photocoagulation creates chorioretinal adhesions by using visible light of different wavelengths to produce burns on the retina and pigment epithelium. Further around the tear, it creates a scar that prevents the fluid accessing the subretinal space and further progressing to a retinal detachment. It can be likened to spot welding. It is performed under topical anaesthesia. After numbing the eye, a special lens enables the surgeon to focus the laser beam on the retinal tears. The laser procedure usually takes about 15 to 20 minutes for small retinal tears. The actual laser procedure may be a little uncomfortable to the patient as bright flashes of light will occur and there may be pinprick sensations as and when the laser is applied.
Laser treatment of diabetic retinopathy
The most important treatment tool for treating retinopathy is laser treatment. The laser beam is a high energy bright light source that turns to heat when it is focused on the part of the retina to be treated. This laser beam coagulates and causes the abnormal vessels to shrink eventually. Timely laser photocoagulation therapy can prevent loss of vision in a large proportion of patients with PDR and/or macular edema. The aim of laser treatment is to stabilize the diabetic retinopathy and prevent progression to more severe retinopathy with possible blinding consequences. Most patients tolerate the procedure extremely well with little discomfort afterwards.
We are equipped with different types of laser delivery systems like green laser, PASCAL laser and PDT laser machines.