Visual field analyzers expanding your field of vision zeiss. Perimetry and standard automated perimetry with sita. The hfa3 user manual, created in acrobat pdf format for use on a computer. Humphrey field analyzer 3 measuring instruments pdf manual download. Contrast sensitivity was measured using the pellrobson pr chart. With statpac you can analyze test results at the time of examination, store test results and analyze them at your convenience, or recall previously stored tests to analyze for comparative purposes. The humphrey matrix visual field instrument uses frequency doubling technology fdt perimetry to test for visual field loss from glaucoma. Humphrey 750i visual field analyzer the ultimate in practice efficiency, advanced features and longterm value. Hvf sita fast 242 full threshold monocularly and hevf binocularly were performed consecutively on the. By recognizing the strengths and limitations of visual field testing, the practitioner can more accurately diagnose and follow patients with glaucoma. Visual acuity was measured using the lighthouse visual acuity charts. The aim of the study was to compare visual field measurements made with humphrey ii 740 visual field carl zeiss meditec and heidelberg edge perimeter hep heidelberg engineering.
Predicting humphrey 102 visual field from 242 visual field. Thus fdt is ideal for clinics desiring to identify patients in need of ophthalmological referral. Zeiss also says the gaze tracker around the hfa3 provides initialization and works compared with earlier hfa models, and that the touch screen interface for technicians is quicker and more intuitive. After requesting quantified visual field tests, the patient returns with a black and white printout with numbers eg, humphrey fields or coloured lines on a sheet eg, goldmann fields. Zeiss humphrey 720i user manual pdf download manualslib. Understanding visual field testing nceyes june 2018.
Visual field testing setting up the perimeter perimetry should be performed in a distractionfree environment, to enable the patient to concentrate on the perimetric test fig 32. With over 65,000 installed units worldwide, the humphrey field analyzer is the premier automated visual field perimeter. Therefore, it provides information regarding the location of any disease processes or. The vfi is a staging index for the total amount of field loss. For being a glaucoma patient at baseline, glaucomatous visual field loss had to. Pdf comparison of visual field measurement with heidelberg.
After requesting quantified visual field tests, the patient returns with a black and white printout with numbers. A patients visual field can be assessed by briefly projecting a spot of light. Validated by more than 25 years of research, design and clinical experience, the humphrey field analyzer hfa is the accepted standard of care in glaucoma diagnosis and management. The zeiss humphrey collection of perimeters, or visual field analyzers include the zeiss 750i, zeiss 745i, zeiss 740i, zeiss720i, and the long standing zeiss 750, zeiss 745, zeiss 740, zeiss 735. Humphrey 740i visual field analyzer the basic model in automated visual field testing for comprehensive care. Illustrated automated static perimetry, detection of glaucoma field defects with humphrey filed analyser, dr g. Humphrey field analyser hfa, is a tool for measuring the human visual field, it is used by. Aims to predict humphrey field analyzer central 102 swedish interactive threshold algorithmstandard test hfa 102 results carl zeiss meditec, san leandro, ca from hfa 242 results of the same eyes with advanced glaucoma.
Factors that influence standard automated perimetry test. View and download zeiss humphrey field analyzer 3 instructions for use manual online. Deviation of the hill from normal is visual field defect. Apr 05, 2019 one early vr study by athens stylianos tsapakis and coworkers found a high correlation between the reliability of vf testing using a vr testing system they developed and the humphrey test. These patients exhibit fixation loss fl rates 20% with the humphrey field analyzer hfa. Zeiss humphrey field analyzer 3 visual field testing system. View and download zeiss humphrey 720i user manual online. A errors in blind spot mapping can occur depending on the stimulus size and optic disc size and morphology humphrey field analyzer hfa 302 full threshold visual. Objective to evaluate the humphrey visual field parameters in patients with pituitary adenoma and classify the visual field defects in this patient group. Perimetry, which is used to quantify the patients visual field, is useful both for diagnosing glaucoma and for following the patient to determine whether glaucoma is progressing. Visual field analyserhfa in clinical practice, these.
The purpose of this study was to compare the monocular humphrey visual field hvf with the binocular humphrey esterman visual field hevf for determining whether subjects suffering from glaucoma fulfilled the new medical requirements for possession of a swedish drivers license. Comparison of the monocular humphrey visual field and the. How do you interpret a 242 humphrey visual field printout. Administering and interpreting visual fields in glaucoma danica j. After requesting quantified visual field tests, the patient returns with a black and white printout with numbers eg, humphrey fields or coloured lines on a sheet eg. Effective perimetry zeiss visual field primer, 4th edition. Interactive thresholding algorithm sita fullthreshold humphrey visual field. Nhanes uses two major instruments to complete the tests. The mean depression md score from the most recent humphrey visual field was used to quantify the visual field defect. The visual field the visual field can be compared with a topographic map of an island. How to understand it how to interpret visual fields. After a bedside visual field examination with waggling fingers and even a red hatpin, you decide that there is an abnormality.
If you do not, then you could be causing refractive scotomas to occur. Pdf history of perimetry and visual field testing paul h. Learning effects and artefacts in automated perimetry pdf. Nov 07, 2019 the aim of this crosssectional study was to evaluate the results of a visual field vf test for patients with glaucoma and pseudofixation loss. The standard of care to screen, monitor, and manage eye disease. On the humphrey field analyzer, the visual field index vfia value similar to the mdwas added to the printout several years ago. Humphrey 745i visual field analyzer all the features of the 740i plus sitaswap software for early detection. The humphrey field analyzers statistical software, statpac, p rovides immediate expert system analysis of visual field test results. Visual field testing and interpretation linkedin slideshare. Jan 04, 2014 visual field visual field is defined as. Carl zeiss humphrey 720i field analyzer hfa iii visual field. Marrelli, od, faao university of houston college of optometry visual fields aka perimetry the measurement of the boundaries of the field of vision and of retinal sensitivity, both centrally and peripherally.
Humphrey visual field test visual field testing is one of many methods used to diagnose and monitor glaucoma progression. Comparison of humphrey field analyzer and imo visual field. Humphrey visual field analyzers carl zeiss meditec pdf. Methods training and testing hfa 242 and 102 data sets, respectively, consisted of 175 eyes 175 patients and 44 eyes 44 patients with open advanced glaucoma mean.
It is the part of environment that is visible to the steadily fixing eye. Precision made by zeiss humphrey field analyzer hfa iii series the gold standard with. To know humphrey visual field analyser to know about various types of perimetry to. The canon cr645nm ophthalmic digital imaging system is used to assess the presence of. A visual field test is an eye examination that can detect dysfunction in central and peripheral vision which may be caused by various medical conditions such as glaucoma, stroke, pituitary disease, brain tumours or other neurological deficits.
Humphrey visual field testing visiting restrictions essential visitors only to help us keep our patients, staff and visitors safe, stop the spread of coronavirus covid19 and keep our hospitals running, we are restricting visiting to essential visitors only click here for more information. How to interpret visual fields practical neurology. Comparison of visual field results of humphrey matrix. Humphrey visual field analysis, visual field defects, and ophthalmic findings in patients with macro pituitary adenoma article pdf available in saudi medical journal 289.
Humphrey visual field analysis, visual field defects, and. With over 65,000 installed units worldwide, the hfa is the premier automated visual field analyzer. Perimetry has long been an important tool for identifying visual field defects and. Pdf effective perimetry zeiss visual field primer, 4th. As with glaucoma,the great majority of defects start in the central 30 degrees of the visual. Pdf humphrey visual field analysis, visual field defects. Brief historical overview on visual fields and perimetry by ca johnson, m wall, and hs thompson. Visual field testing with the humphrey field analyzer. Visual field defects can be diagnosed by manual perimetry or automated static perimetry. Humphrey field analyzer 3 simplifies trial lens correction dependent on the patients refractive data, to decrease setup time. Humphrey field analyser hfa ii i series user manual. Given the significant dominance of the humphrey the patients visual field over time. Humphrey visual field testing east sussex healthcare nhs trust.
Humphrey field analyzer ii iii 23 humphrey field analyzer iii 24 humphrey field analyzer uses a bowlperimeter with a radius of 33 cm because of working distance, presbyopia or cycloplegia will affect the clarity of the targets presented to the patient testing within the central 30. Pdf peripheral visual field thresholds using humphrey field. Carl zeiss humphrey 750i field analyzer hfa iii visual field. Comparison of contrast sensitivity, visual acuity, and. Advanced analysis with comprehensive connectivity options validated by more than 30 years of research, design and clinical experience, the humphrey field analyzer hfa is the accepted standard of care in glaucoma diagnosis and management. Humphrey visual field hvf computerized automated perimetry measures visual field with stationary test object that is increased in intensity from below threshold until perceived by the patient threshold light intensity at which stimulus can be seen 50% of the time. The value of visual field testing in the era of advanced. Pdf various methods have been used for testing peripheral visual field disturbances such as defects caused by drug toxicity. Peripheral visual field thresholds using humphrey field analyzer program 604 in normal eyes article pdf available in european journal of ophthalmology 214. Used in concert with other tests such as intraocular pressure measurements, optic nerve examination and other tests, filed testing can be an important part of care.
These are areas of nonseeing that are only there because. Humphrey field analyser hfa, is a tool for measuring the human visual field, it is used by optometrists, orthoptists and ophthalmologists, particularly for detecting monocular visual field. Humphrey 720i measuring instruments pdf manual download. Methods forty primary pituitary adenoma patients underwent neuroophthalmological examination and humphrey perimetry 302 visual field test at baskent university, departments of ophthalmology, and neurosurgery, between 2003 and 2005.