Perimeter has input means for inputting identification data of an examinee and a kind of perimetry to be conducted, means for judging whether or not the examinee has already received the perimetry, means to read examinee measurement information, means to judge whether or not a kind of inputted perimetry is different from the past perimetry, means to compute and determine initial stimulus luminance of the perimetry to be conducted from now on as a value equal to the sensitivity which is shown in sensitivity distribution data or closer thereto from the sensitivity distribution data of the past perimetry if different kind is judged, and means for starting the perimetry with the determined initial stimulus luminance.

It is easy to perceive a stimulus in a central portion of a visual field rather than in a peripheral portion thereof, and it is easy to perceive the stimulus for a younger examinee rather than for an older examinee even if the stimulus having the same luminance is indicated. In the perimeter according to the invention, the stimuli are indicated at various positions of a visual field dome, and the luminance of the stimulus is gradually raised before obtaining a response from an examinee through an operation switch. A value of the luminance of the indicated stimulus is set according to the position of the indicated stimulus and an age of the examinee, and the measurement accuracy is correct, thereby.

A perimeter for examining a visual field of an eye of a patient, includes: a presentation unit, which presents an examination target at each of various positions around an eye fixation point to which the patient's eye is visually fixed; a position determination unit, which determines at least one of positions of an optic pappila, a central fovea and a macula lutea on a fundus of the patient's eye; and a control unit, which determines a running state of a nerve fiber bundle on the fundus based on the determined position, and which controls the presentation unit to present and move the examination target based on the determined running state of the nerve fiber bundle.

A system is provided for measuring the color visual fields of a patient's eyes, and includes a viewing area for the patient to direct one of their eyes toward. The viewing area also has a viewing area perimeter, and the viewing area is divided into four substantially equal quadrants. The system further includes a fixation structure, which is located substantially at a central portion of the viewing area. Generally, the purpose of the fixation structure is to hold the attention of the patient. There are also a plurality of predetermined and substantially linear paths included in the system. The paths extend in directions radially outward from the fixation structure toward the viewing area perimeter. The plurality of predetermined paths are spaced apart by substantially equal angles of separation. Also, each quadrant of the viewing area includes at least two predetermined paths therein. A stimuli target is also provided to continuously and automatically move along the predetermined paths. The stimuli target moves in a direction beginning at a beginning point on the viewing area and continues toward an ending point for each path. The stimuli target completes movement on a first path before beginning movement on a second path.

Methods and systems for performing an eye test and for detecting eye disease. A test pattern is presented to an individual. The individual fixates an eye on a fixation target. The test pattern is then hidden and a second test pattern is displayed at a different location. The individual then compares the perceived second test pattern with a pre-defined reference pattern. These steps are repeated several times, while varying the location of presentation of the patterns. Alternatively, the individual fixates on a presented fixation target. A test pattern is presented to the patient and then disappears. The individual compares the perceived pattern, with a pre-defined reference pattern. These steps are repeated while changing the location of presentation of the test pattern. It may then be determined whether the individual has an eye disease based on the comparisons.