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Eye chart is necessary to make comparisons and to record people's visual acuity. Types of eye charts include the Snellen chart, Landolt C, and the Lea test. It usually displays several rows of test symbols, each row in a different size. The person is asked to identify the numbers or letters on the chart, usually starting with large rows and continuing to smaller rows until the optotypes cannot be reliably identified anymore.
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| (11 suppliers)
Routine EEG systems are mobile and versatile, allowing operators in medical centers or physicians' offices to record and review test results on single and compact units. These systems come with an ergonomic, lightweight cart easily wheeled throughout medical facility. The amplifier can be clamped to the cart for easy transport. There is no need to be connected to the network in order to do mobile recordings. The amplifiers have special inputs to accurately record EOG, ECG, EMG, respiratory, oximetry, heart rate, and plethysmography signals when needed.
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