Visual Field Test ( Perimetry Eye Test )
The perimetry test is also referred as visual field test ( or a perimeter test ) is prescribed to the patient to detect the loss of peripheral vision under certain medical conditions such as glaucoma.
The perimetry test provides the map of the lost peripheral vision. Based on the results of the perimetry test, your eye doctor can diagnose the potential causes of the loss of peripheral vision and decide the further line of treatment.
Dr. Swati Sathe 's Eye Clinic
Ophthalmologist , Eye Specialist , Eye Surgeon , Contact Lens Specialist
Glaucoma Eye Clinic
Welcome to our eye clinic . Dr Swati Sathe is Consultant Ophthalmologist , Eye Specialist And Practicing Eye Surgeon In Koregaon Park in Pune. This eye specialist clinic is well equipped with latest eye care equipment to provide the best eye care services.
Perimetry Eye Test At Dr. Swati Sathe 's Eye Clinic
The eye clinic has earned reputation for offering comprehensive range of eye care services, which includes comprehensive eye check-up for the diagnosis and Treatment for Glaucoma and Cataract. The eye clinic offers perimetry eye test , Visual Field Test for the diagnosis and treatment of Glaucoma with latest surgical techniques.
What Is Visual Field Test ?
The perimetry ( Visual Field Test ) is one of the most important test for the diagnosis and treatment of glaucoma. The glaucoma can cause increases in the eye pressure ( intraocular pressure IOP ). The increased eye pressure can cause damage to the optic nerve and the consequential loss of vision.
A visual field test or perimetry is a part of the medical eye examination that detects the loss of in the peripheral vision or central vision.
Since the loss in the peripheral vision happens gradually, most patients fail to notice the loss in the vision. However, your eye doctor during routine eye examination can diagnose the early symptoms.
The loss of the Visual field could be due to glaucoma or some neurological conditions such as stroke, trauma, brain tumors or other medical condition.
A visual field test measures two things :
- How far up, down, left and right the eye can see without moving the head.
- How sensitive the vision is in different parts of the visual field.
The perimetry eye test at Dr Swati Sathe’s Eye clinic is performed using the latest special medical equipment called perimeter.
The perimetry test usually takes around 15 to 30 minutes depending upon the program selected on the perimeter by your eye doctor. The visual field test is performed separately for the left eye and the right eye.
Your eye doctor will give you detailed instructions before the test starts. It is important for the patient to follow these instructions to ensure the accuracy of the test.
What Is Glaucoma ?
The Glaucoma is an eye disease caused due to increased eye pressure. The increased eye pressure can damage your optic nerve adversely affecting the normal vision.
The optic nerve plays an important role and it sends visual information to your brain from your eyes. In most cases the glaucoma is the result of abnormally high pressure ( IOP ) inside your eye. The high pressure ( ocular hypertension ) in the eyes can damage the optic nerve tissue.
It is important for the glaucoma patients to regularly consult and monitor the intraocular pressure with Tonometry ( Eye Pressure Test ).
Visual Field Test ( Perimetry ) For Glaucoma
Visual field tests is an important test especially for the diagnosis and treatment of glaucoma. Your eye doctor will take you through visual field test to determine the loss of vision.
The patients with glaucoma should be regularly examined by the eye doctor to monitor the progression of the disease and other eye condition. And therefore, it is important for the glaucoma patient to regularly consult the eye doctor.
The left side image represents a visual field without any vision loss. Whereas, the right side image represents the visual field with vision loss due to glaucoma. The darker Gray area and the black area represents loss of vision in the visual field. The optic disk appears black in both the visual field which is normal.
How Visual Field Test Is Performed ?
The visual field test is performed using a special medical instrument called a perimeter. This test is a subjective vision field test. This means that the accuracy of the test depends upon the patient’s responses.
And therefore, it is important for the patient to clearly understand the instructions to be followed during the perimetry test. The perimetry test procedure is simple and patient can quickly understand.
The vision field test procedure is explained bellow :
Visual Field Test Procedure
- Your eye doctor will explain the test instructions.
- The test is performed in the dark room.
- The vision field test is performed with perimeter.
- The test is conducted for each eye separately.
- The other eye during the test is covered with eye cap.
- You have to look straight inside the perimeter.
- Place your chin on the chin holder and wait for the test to start.
- You will be holding controller with a button in your hand.
- When the test starts you will notice a tiny light flashing.
- The light keeps flashing in different directions.
- Each time you notice the light, you have to press the button.
- Your responses are automatically recorded by the perimeter.
- Each perimetry test usually takes 10 to 15 minutes.
- Your eye doctor will discuss the test results with you.
FAQ - Visual Field Test
Perimetry - Frequently Asked Questions
How To Book Appointment For Perimetry Test ?
For appointment booking for visual field test ( perimetry test ) please contact Clinic mobile +91 9823622211 Or Clinic Land Line number 020 26050785. You can also book appointment on Clinic WhatsApp No +91 9823622211 .
What Is Visual Field Test ?
The visual field test is prescribed for the patients suffering from vision loss due to glaucoma or other medical conditions.
The perimetry test is also referred as vision field test. A visual field test or perimetry is a part of the medical eye examination that detects the loss of peripheral vision or central vision.
When do you need Visual Field Test ?
The patient usually approaches the eye doctor for the routine eye check up or with some eye related problem. During eye examination, your eye doctor might notice a vision loss that needs further investigation. The perimetry test is required for further diagnosis.
The visual field test is also recommended for high risk patients with glaucoma , diabetes , high blood pressure and other medical conditions that might lead to loss of vision.
How much time visual field test takes ?
The vision field test performed with computerized medical equipment called the perimeter usually takes around 10 to 20 minutes depending upon the program selected on the perimeter.
What happens if I make few wrong button clicks ?
It possible during the test that you might press couple of times the wrong button press. However, you need to focus and look straight during the test. Multiple wrong responses from your side might adversely affect the test results. In some cases your eye doctor might repeat the test.