JP2010082253A5 - - Google Patents

Claims (7)

In an optotype presenting apparatus, comprising an optotype presenting means for presenting an inspection target including a visual acuity target and a fixed-point visual target for Maddox inspection, and an optotype selecting means for selecting an inspection target
A target presentation apparatus comprising: blinking means for blinking a fixed-point target presented by the target presentation means when a fixed-point target is selected by the target selection means. The target presentation apparatus according to claim 1, further comprising brightness changing means for increasing the brightness of the fixed-point target relative to the brightness when presenting a visual acuity target. The target presentation apparatus according to claim 1 or 2 further includes a blinking period change signal input unit having a switch for inputting a signal for changing the blinking period of the fixation target. The blinking unit is changed based on the input signal. A visual target presenting apparatus characterized by flashing a fixed-point visual target at a predetermined cycle. The target presentation apparatus according to claim 2, further comprising a luminance change signal input unit having a switch for inputting a signal for changing a luminance level of the fixation point target, wherein the luminance change unit is configured to perform the fixation point vision based on the change signal. An optotype presenting apparatus characterized by changing the brightness of a target. 2. The optotype presenting apparatus according to claim 1, wherein the optotype presenting means illuminates the optotype plate and the optotype plate that are switched and arranged in the optical path from behind. Visual target presentation having an illumination light source, or having a visual target display optical system having a target plate and an illumination light source and a shutter inserted into and removed from the optical path, or a display for displaying the visual target on the screen Having an optical system,
The blinking means includes control means for controlling lighting of the illumination light source arranged in the target-presenting optical system or insertion / removal of the shutter into the optical path, or control means for controlling display of the display. A target presentation device. 6. The optotype presenting apparatus according to claim 5, wherein the control means further controls the display of the light source or the display to increase the brightness of the fixed-point target relative to the brightness when presenting the visual acuity value target. An optotype presenting apparatus characterized by that. 7. The optotype presenting apparatus according to claim 6, wherein a blinking period changing signal input means having a switch for inputting a signal for changing a blinking period of the fixation target and a switch for inputting a signal for changing the luminance level of the fixation target. Having at least one input means of brightness change signal input means having,
The optotype presenting apparatus characterized in that the control means controls display of the light source or the display based on a signal from the input means.