Clinical evaluation of the Scoperimeter, an experimental automatic perimeter. 1982

E L Greve, and R W de Boer, and D Bakker, and J Moed

The Scoperimeter is an experimental automatic campimeter based on an oscilloscope connected with a microcomputer and a printer-plotter. The instrument has 60 stimuli in the 25 degrees visual field and uses a suprathreshold gradient-adapted threshold related strategy (1). The report describes the results of a comparative examination of the threshold related gradient-adapted suprathreshold detection and limited assessment programme in 20 eyes with normal visual fields, 24 eyes of patients with glaucomatous defects and 10 eyes of patients with (para) central defects due to maculopathies. The Scoperimeter detected all larger defects. The Scoperimeter detected 60% of very early glaucomatous defects. The remaining 40% was detected by high resolution (1 degree) manual meridional static perimetry. The configuration of defects was demonstrated satisfactorily only for homogeneous defects of considerable size. The strategy is quite satisfactory for the detection of glaucomatous defects provided the resolution is increased and the peripheral field can be examined. A high resolution threshold strategy serving as a data base for follow-up examination is under investigation. The Scoperimeter's low resolution grid and suprathreshold strategy are not suitable for the detection and assessment of small relative (para) central defects.

UI MeSH Term Description Entries
D008266 Macula Lutea An oval area in the retina, 3 to 5 mm in diameter, usually located temporal to the posterior pole of the eye and slightly below the level of the optic disk. It is characterized by the presence of a yellow pigment diffusely permeating the inner layers, contains the fovea centralis in its center, and provides the best phototropic visual acuity. It is devoid of retinal blood vessels, except in its periphery, and receives nourishment from the choriocapillaris of the choroid. (From Cline et al., Dictionary of Visual Science, 4th ed) Lutea, Macula,Luteas, Macula,Macula Luteas
D008838 Microcomputers Small computers using LSI (large-scale integration) microprocessor chips as the CPU (central processing unit) and semiconductor memories for compact, inexpensive storage of program instructions and data. They are smaller and less expensive than minicomputers and are usually built into a dedicated system where they are optimized for a particular application. "Microprocessor" may refer to just the CPU or the entire microcomputer. Computers, Personal,Microprocessors,Computer, Personal,Microcomputer,Microprocessor,Personal Computer,Personal Computers
D010775 Photic Stimulation Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity. Stimulation, Photic,Visual Stimulation,Photic Stimulations,Stimulation, Visual,Stimulations, Photic,Stimulations, Visual,Visual Stimulations
D012164 Retinal Diseases Diseases involving the RETINA. Disease, Retinal,Diseases, Retinal,Retinal Disease
D005901 Glaucoma An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed) Glaucomas
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014794 Visual Fields The total area or space visible in a person's peripheral vision with the eye looking straightforward. Field, Visual,Fields, Visual,Visual Field
D058609 Visual Field Tests Method of measuring and mapping the scope of vision, from central to peripheral of each eye. Automated Perimetry Exam,Campimetry,Perimetry,Tangent Screen Exam,Visual Field Exam,Automated Perimetry Exams,Campimetries,Exam, Automated Perimetry,Exam, Tangent Screen,Exam, Visual Field,Exams, Automated Perimetry,Exams, Tangent Screen,Exams, Visual Field,Field Exam, Visual,Field Exams, Visual,Field Test, Visual,Field Tests, Visual,Perimetries,Perimetry Exam, Automated,Perimetry Exams, Automated,Screen Exam, Tangent,Screen Exams, Tangent,Tangent Screen Exams,Test, Visual Field,Tests, Visual Field,Visual Field Exams,Visual Field Test

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