Method and device for imaging a section of the eyeground
AssigneeHaag-Streit AG
InventorFelix Barker
Life of this patent
Estimating the term…
Abstract
A device for examining for the eyeground of a patient's eye (1) has a head holder (3) for fixing the patient's head and a slit lamp unit (19 or 22). Provided on the head holder is a laterally movable lens carriage (9), in the shaft guide (10) of which a lens holder (11) can be introduced with its shaft (27) from above. For positioning the lens (12) in front of the eye (1), the lens holder is coupled in terms of movement to the microscope by means of an adapter (25) and a guide plate (24). The lens carriage, the lens holder and the adapter or the guide plate are in this case formed in such a way that the lens holder can be spatially fixed and uncoupled from the microscope with few manipulations, which makes it possible for an image of the eyeground to be formed the microscope in an optimum way.
Claims13
A method for forming an image of a rear portion of a patient's eye with a viewing unit and an optical unit comprising at least the following steps:
- a) the optical unit is coupled in terms of movement to the viewing unit,
- b) the optical unit is positioned in front of the patient's eye in such a way that it is located between the viewing unit and the patient's eye in a given relative position with respect to the patient's eye,
- c) the optical unit is spatially fixed in relation to the patient's eye,
- d) the optical unit is uncoupled from the viewing unit while maintaining the spatial fixing in relation to the patient's eye,
- e) by moving the viewing unit, the rear portion of the patient's eye is viewed or an image of it is formed.
A device with a viewing unit and an optical unit for forming an image of a rear portion of a patient's eye, comprising means for coupling the optical unit in terms of movement to the viewing unit, means for positioning the optical unit coupled to the viewing unit between the viewing unit and the patient's eye, means for spatially fixing the optical unit in relation to the patient's eye and also means for uncoupling the spatially fixed optical unit from the viewing unit.
Dependencies are inferred from the claim text.