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A Visual Field Test

is a method of detecting central or peripheral retinal diseases, eyelid conditions, optic nerve disease, and diseases affecting the visual pathways within the brain.

What is a visual field test?

An important part of a medical eye exam is the use of a visual field test also known as perimetry, which detects decreases in peripheral vision or central vision that are usually not noticed by the patient.

The most common use of visual field testing is to detect any signs of optic nerve damage caused by glaucoma. Visual field tests can also detect retinal diseases, eyelid diseases such as ptosis or drooping, optic nerve diseases such as optic neuritis, and brain diseases affecting visual pathways. Vision is processed in the brain by the visual pathways that transport information from the front of the eye.

How is visual field testing done?

Visual fields can be measured using a variety of methods. One eye is typically tested at a time during visual field testing. In all tests, the patient must fixate on a central target. If you require glasses correction, you will be seated in front of the machine by a technician and appropriate lenses will be used. When the technician performs the test, they will make sure you are looking straight ahead at the fixation light, that your upper eyelid is not blocking your vision, and that your head is not too shifted.

What conditions does a visual field test diagnose?

A visual field test is an extremely important part of a comprehensive eye examination and is performed for a wide variety of conditions. When patients schedule a medical eye exam at our Bellflower optometry clinic we often run a visual field test using our state of the art equipment.

Visual field testing is useful for:
  • Screening for glaucoma
  • Testing patients with glaucoma for treatment response
  • Screening and testing for lid droop or ptosis, particularly for insurance approval of lid lift surgical procedures
  • Determining whether you have blind spots in your vision (called scotomas) and where they are. The size and shape of a scotoma can indicate the type of eye disease or brain disorder affecting your vision.
  • Testing for diseases that impact the macula such as macular degeneration 
  • Identifying potential toxicity from certain medications such as Plaquenil used for rheumatoid arthritis
  • Testing for peripheral retinal disease such as retinal detachment or retinitis pigmentosa
  • Testing the function of the optic nerve looking for tumor, injury, poor circulation or stroke, compression from swelling in the eye socket or orbit, or severe dietary deficiency
  • Testing the visual pathways to the brain, looking for tumor, brain swelling, injury, or poor circulation
  • Testing the visual or occipital cortex, looking for tumor, injury, brain swelling, or poor circulation.
  • Identifying the impact of a stroke, traumatic brain injury, or other neurological conditions  on the visual system
  • Measuring the capacity of the brain to process visual information and project the image accurately into space. 
  • An assessment of how much space the patient is able to process and interact with at any one time.
vf4

Diabetes or diabetic retinopathy

Glaucoma

Retinal Detachment

Age Related Macular Degeneration

What are the different types of visual field tests?

  • Electroretinography
  • Amsler grid: A basic visual field test for central vision
  • Confrontation visual field test
  • Automated static perimetry test
  • Kinetic or functional visual field test
  • Frequency doubling perimetry
vf2

How long should a visual field test last?

In general a visual field test takes a few minutes, however there are a variety of tests that depend on different factors such as the presence of a known condition, the ability to maintain concentration, and the goals of the eye doctor for the use of the test.
The length of the test may depend on the patient's ability to sustain concentration for extended periods of time. A longer visual field test is advised if the patient can tolerate it, whereas if the patient has trouble concentrating for five minutes but can manage two minutes, a shorter test would be best for them.
In case you are already suffering from vision loss or your vision is rapidly deteriorating, then our eye doctors will need to have the most accurate information possible. This would require a longer test to obtain more accurate information. On the other hand, if you have a very early loss of vision, a shorter test might be sufficient.
If you have early glaucoma or suspect that you have glaucoma, then again a shorter test might be sufficient for you. A standard visual field test might be more appropriate if you have more severe glaucoma and are older. Such patients should not be tested for a shorter period of time as that might produce abnormal results.

Why you should ensure that a visual field test is part of your eye exam

The visual field test is extremely valuable in the prevention, diagnosis, and management of a wide range of ocular diseases that impact our central, peripheral, and functional vision. Our eye doctors can detect early signs of ocular diseases using a visual field, measure the progression of the disease objectively, and determine how your disease is impacting your vision. Having a visual field test done by our eye doctors enables them to provide you with appropriate treatment or tools to improve your visual function and manage or treat your condition. Call us today at (562) 925-6591 to schedule a visual field and medical eye exam. Patients with visual field loss and central vision deficits visit our clinic from all over California, and we are proud to be a leading provider of visual field testing for patients from Bellflower, Long Beach, Lakewood, and Los Angeles.

Testimonials


I haven't actually used the optometrist side, so my review is limited to the vision therapy offered.  This office was recommended by my occupational therapist for the treatment of my double vision following a stroke.


Claire A.

Love this location. I had a brain injury accident from day one one. All the team make you feel you still important and hope in the horizon after when the medical system fell you miserably. Dr. Ikeda very professional and very understanding about your issue. Two tombs up.


Jim K.

My husband and I were immediately impressed with Dr Ikeda. I was hit by a car while cycling which caused broken bones and three brain injuries. The brain injuries caused double vision. Dr. Ikeda examined my eyes and got me started on vision therapy with his occupational therapist who specializes in vision therapy.  She (Chris) is absolutely great.  I am impressed with the array of tools used to help recover my binocular vision.  I am doing things I never thought were possible (balance boards etc).  Chris pushes me and keeps me motivated. I really enjoy my sessions with her.  The office staff is always friendly and they have a wonderful appointment reminder tool that makes it easy to keep my calendar up to date. I am happy the rehab center at Little Co. of Mary recommended them!!


Teresa S.

The Vision Therapy is handled in a separate office through a different door from the shared waiting room. Chris, the vision therapist, has a wide and varied assortment of tools, equipment and resources to best evaluate and treat most vision issues. After just a few visits, my double vision became easier to control, using exercises developed during the therapy process. It was time well-spent.


Joe M.

I have been coming here since I can remember. I love it here. The staff is so amazing and nice. They explain everything they gonna do and never make you feel rushed. Dr. Ikeda has always been my doctor and I would never want another one. He is the doctor for my whole family and is always asking how everyone is doing. I am also so crazy about picking out my frames and have to try so many and each person who helps me take the time and lets me try them all on. I would never want to go anywhere else! I definitely would recommend this office to anyone looking for a great eye doctor.


Kayla W.

This is not for the eye exam but for the frames selection portion. I brought my prescription from Kaiser here with my VSP insurance. The reception staff was very polite and professional.  Manny helped me to pick out frames and explain my coverage.  Very helpful and patient not like the individual at the other place I rated here on Yelp.  I was running late and he still helped me and was not bothered at all.  I am so glad I came here ..........very pleased.

Very professional staff and pleasant.


Daniel G.
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