Perimetry; Tangent screen exam; Automated perimetry exam; Goldmann visual field exam; Humphrey visual field exam
The visual field refers to the total area in which objects can be seen in the side (peripheral) vision as you focus your eyes on a central point.
This article describes the test that measures your visual field.
Confrontation visual field exam. This is a quick and basic check of the visual field. The health care provider sits directly in front of you. You will cover one eye, and stare straight ahead with the other. You will be asked to tell when you can see the examiner's hand.
Tangent screen or Goldmann field exam. You will sit about 3 feet (90 centimeters) away from a flat, black fabric screen with a target in the center. You will be asked to stare at the center target and let the examiner know when you can see an object that moves into your side vision. The object is usually a pin or bead on the end of a black stick that is moved by the examiner. This exam creates a map of your central 30 degrees of vision. This exam is usually used to detect brain or nerve (neurologic) problems.
Goldmann perimetry and Automated perimetry. For either test, you sit in front of a concave dome and stare at a target in the middle. You press a button when you see small flashes of light in your peripheral vision. With Goldman testing, the flashes are controlled and mapped out by the examiner. With automated testing, a computer controls the flashes and mapping. Your responses help determine if you have a defect in your visual field. Both tests are often used to track conditions that may worsen over time.
Your provider will discuss with you the type of visual field testing to be done.
No special preparation is necessary.
There is no discomfort with visual field testing.
This eye exam will show whether you have a loss of vision anywhere in your visual field. The pattern of vision loss will help your provider diagnose the cause.
The peripheral vision is normal.
Abnormal results may be due to diseases or central nervous system (CNS) disorders, such as tumors that damage or press on (compress) the parts of the brain that deal with vision.
Other diseases that may affect the visual field of the eye include:
The test has no risks.
Budenz DL, Lind JT. Visual field testing in glaucoma. In: Yanoff M, Duker JS, eds. Ophthalmology. 5th ed. Philadelphia, PA: Elsevier; 2019:chap 10.5.
Chuck RS, Dunn SP, Flaxel CJ; American Academy of Ophthalmology Preferred Practice Pattern Committee, et al. Comprehensive adult medical eye evaluation preferred practice pattern. Ophthalmology. 2021;128(1):1-29. doi.org/10.1016/j.ophtha.2020.10.024. Published November 12, 2020.
Olitsky SE, Marsh JD. Examination of the eye. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 637.
Ramchandran RS, Sangave AA, Feldon SE. Visual fields in retinal disease. In: Schachat AP, Sadda SVR, Hinton DR, Wilkinson CP, Wiedemann P, eds. Ryan's Retina. 6th ed. Philadelphia, PA: Elsevier; 2018:chap 14.BACK TO TOP
Review Date: 3/2/2021
Reviewed By: Franklin W. Lusby, MD, Ophthalmologist, Lusby Vision Institute, La Jolla, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
Health Content Provider
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2023 A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.