What is Sita visual field?
Ann Arbor, MI-The Swedish Interactive Threshold Algorithm (SITA) is one of the newer generations of perimetry basic detection devices used in glaucoma to evaluate visual fields. “The goal of these tests is to detect disease and progression of visual field damage.”
What is 24 2C field?
24-2C visual field testing combines the speed of SITAFaster with an additional 10 points incorporated into the 24-2 grid. Dr Jack Phu discusses key clinical considerations to determine the value of 24-2C for diagnosis and management of patients with glaucoma and glaucoma suspects.
What are the normal range of visual field?
The normal (monocular) human visual field extends to approximately 60 degrees nasally (toward the nose, or inward) from the vertical meridian in each eye, to 107 degrees temporally (away from the nose, or outwards) from the vertical meridian, and approximately 70 degrees above and 80 below the horizontal meridian.
What is the difference between SITA Standard and SITA Fast?
In the 20 to 5 dB range, SITA Fast was less precise than SITA Standard; this difference was largest between 15 to 10 dB, where variability in both methods peaked. Translated to median time to detection, differences in measurement precision were negligible, suggesting minimal effects on time to detect progression.
What SITA fast?
Method: Computer simulations of visual fields were used to develop a new rapid threshold strategy, SITA Fast. Defects detected by SITA Fast were often deep and more localised than those detected by the Full Threshold and the Fastpac strategies. Conclusion: SITA Fast tests were considerably shorter than Fastpac tests.
Is it legal to have a glaucoma report?
I have a glaucoma report that says, “24-2 SITA standard visual field showed 360 periperhal constriction with paracentral scotmoa OD. His HRT was within nomrla limits OD.” I am told it says I am legall … read more Dear Dr 5 years ago I went totally blind in my left eye and 75% loss of vision in my right eye.
How is Sita used in visual field evaluation?
SITA was designed to replace full-threshold testing, which required more time to complete and led to patient fatigue during testing. Both SITA Standard and SITA Fast use complex software to speed up visual field evaluation by relying on normative data as well as the test takers’ previous responses.
Which is the best interpretation guide for glaucoma?
ZEISS FORUM Glaucoma Workplace analysis reports offer qualitative and quantitative information in an easy-to-read format. This interpretation guide explains various areas of each report and the valuable information they provide for a doctor’s clinical assessment.
What does prolonged visual field testing mean for glaucoma?
A prolonged testing time may indicate patient fatigue and must be considered if there is a large amount of global depression. Visual field testing is a vital component in the diagnosis and follow-up of glaucoma patients.
SITA was designed to replace full-threshold testing, which required more time to complete and led to patient fatigue during testing. Both SITA Standard and SITA Fast use complex software to speed up visual field evaluation by relying on normative data as well as the test takers’ previous responses.
A prolonged testing time may indicate patient fatigue and must be considered if there is a large amount of global depression. Visual field testing is a vital component in the diagnosis and follow-up of glaucoma patients.
What does percentage mean on glaucoma progression analysis?
The percentage value can be tracked over a series of tests and used as one indicator for progression. 6. This is a progression analysis printout (Guided Progression Analysis, or GPA, Humphrey Field Analyzer) for a patient with advancing glaucoma in the left eye. The two baseline fields are on the top while the most recent test is on the bottom.
How is kinetic perimetry used to diagnose glaucoma?
Perimetry has long been an important tool for identifying visual field defects and guiding glaucoma patients’ treatment. Kinetic perimetry involves the use of moving targets from nonseeing to seeing areas to delineate spots of decreased or absent vision.