(1) PRE-OWNED AND IN GOOD CONDITION
ZEISS / HUMPHREY FIELD ANALYZER II 745 / HFA II 745
*This Unit Has Been Inspected, Tested, Calibrated AND Completely Verified By A FACTORY-TRAINED HUMPHREY / ZEISS Equipment Technician.
It Is Ready To Go To Work In Your Office Or Clinic Today!!*
Measures/Output - Sensitivity of the visual field using White-On-White or Blue - Yellow stimuli
Sample Clinical Use - Glaucoma assessment, pathology of the anterior and posterior visual pathways
*Has Gaze Tracking*
*SOFTWARE VERSION: 14.2*
Warranty:
•30-Day Warranty On The Visual Field Analyzer - Warranty Is Based Upon The Performance Only, Not The Looks Of This Unit
*Please Take Note Of The Vertical Crack Of This Unit In Pic 3. The Length Of The Crack In Pic #3 Is About Six Inches, It Is NOT DEEP Into The Unit, IT IS A THIN PIECE OF THE OUTER SHELL THAT COULD BE GLUED TO THE UNIT...PURELY AESTHETIC. If You Want To See More Pics, Please Ask For More Pics Showing Blemishes/Cracks Of This Unit. None Of These Blemishes/Cracks Affect The Performance Of This Equipment.
Warranty Is Based Upon The Performance Only, Not The Looks Of This Unit*
*There Is Also Another Pic That Shows Some "Shade Color" Difference From The Front Of The Unit Compared To The Rest Of The Unit. Warranty Is Based Upon The Performance Only, Not The Looks Of This Unit. Please Ask If You Would Like To See This Pic*
*Please Read The Return Policy For This Offer And Ask Me If You Have Any Questions, Before You Purchase This Equipment*
OFFER INCLUDES:
•(1) ZEISS/HUMPHREY 745 VISUAL FIELD ANALYZER; FEATURES BLUE - YELLOW (SWAP-Short Wavelength Automated Perimetry) Testing
•(1) PATIENT RESPONSE BUTTON
•(1) KEYBOARD
•CALIBRATION DISK
PLEASE NOTE THE FOLLOWING:
•DOES NOT HAVE GPA, BUT IS UPGRADABLE TO GPA
•NO TAPE BACK-UP
•POWER TABLE IS NOT INCLUDED WITH THIS OFFER
•PRINTER IS NOT INCLUDED WITH THIS OFFER
•OPERATING MANUAL AVAILABLE BY DOWNLOAD ONLY
The Purpose Of Visual Field Testing, Or Perimetry, Is To Provide Information Critical To:
•Diagnosing Ocular Diseases, Especially Glaucoma
•Evaluating Neurological Diseases
•Monitoring The Progress Of Ocular And Neurological Diseases
Visual field testing can lead to early detection and treatment of disease. In the case of glaucoma, visual fields play a major role in identifying visual field defects and evaluating the efficacy of the therapy used to control the disease process.
When evaluating visual performance, clinicians are primarily interested in two retinal tests measure functions: resolution and contrast sensitivity. Resolution is the ability to identify discrete forms (letters, numbers, symbols), and is commonly measured with the visual acuity test. Resolution rapidly diminishes with increasing distance from the fovea and is, therefore, a poor indicator of overall visual performance.
A better means of evaluating visual function—especially those areas less sensitive than the fovea—is contrast sensitivity testing. Contrast sensitivity is the ability to detect a stimulus (spot of light or other target) against a darker or brighter background. Standard Humphrey perimetry may be thought of as contrast sensitivity testing applied throughout the peripheral visual field.
In perimetry, the term “threshold” is used to describe a very specific level of stimulus detection. The threshold represents the point at which a stimulus is seen 50% of the time and missed 50% of the time. The assumption is that all stimuli brighter than the threshold value will be seen and all stimuli dimmer will be missed. Reviewing the threshold value at each point tested in the visual field is an important part of the diagnostic process.
Visual field tests can yield information that is general in nature, as with screening tests, or more exacting and quantitative, as with threshold tests. In deciding which test type is most appropriate for a patient the practitioner is influenced by many factors, including the patient’s presenting complaint, family history, age, degree of cooperation, and time available to run the test.
Methods Of Testing The Visual Field:
•Kinetic Testing
•Static Threshold Testing
*Above information was provided by Humphrey Field Analyzer II User's Guide
*This Unit Has Been Inspected, Tested, Calibrated AND Completely Verified By A FACTORY-TRAINED HUMPHREY / ZEISS Equipment Technician.
It Is Ready To Go To Work In Your Office Or Clinic Today!!*
Warranty:
•30-Day Warranty On The Visual Field Analyzer - Warranty Is Based Upon The Performance Only, Not The Looks Of This Unit
*Please Read The Return Policy For This Offer And Ask Me, If You Have Questions Before You Purchase This Equipment*
*LTL FREIGHT SHIPPING COST OF $495.00 INCLUDES PROFESSIONAL WOOD CRATING, INSURANCE AND DELIVERY INTO YOUR OFFICE*
Return Policy
Items are sold as-is with no returns or refunds available unless explicitly stated.
