Prism bar examination device for strabismus examination

Abstract

The invention discloses a prism bar examination device for strabismus examination. According to the main technical scheme, the prism bar examination device comprises an examination table, a prism bar and a bar control mechanism, wherein the inspection table comprises two fixed columns, a head support and a movable support, the head support is arranged between the two fixed columns, two ends of the movable support are movably connected with the two fixed columns respectively; the movable support can make lifting motion in the vertical direction; the bar control mechanism comprises a horizontal sliding seat and a sliding piece, the horizontal sliding seat is fixedly connected with the movable support, a vertical sliding groove is formed in the sliding piece, and the prism bar is embedded in the vertical sliding groove; the prism bar comprises a plurality of prisms with different prism degrees, the plurality of prisms are sequentially arranged according to a fixed prism degree gradient, a positioning mechanism is arranged between the vertical sliding groove and the prism bar, and the prism bar moves upwards or downwards according to a fixed displacement distance each time through a positioning mechanism; and a light shielding plate used for shielding eyes is further arranged, and is horizontally connected with the movable support or the horizontal sliding seat in a sliding mode.

Description

technical field [0001] The invention relates to the technical field of ophthalmic instruments, in particular to a prism row mirror inspection device for strabismus inspection. Background technique [0002] Strabismus is an abnormal eye position in which the visual axis of the other eye deviates from parallel when one gazes. Most patients with strabismus will experience weakening or loss of stereopsis, amblyopia may occur in those with monocular suppression, and diplopia and confusion may occur in some patients. [0003] Strabismus generally includes esotropia, exotropia and upward and downward strabismus. Esotropia refers to the inward deviation of the eye position; exotropia refers to the outward deviation of the eye position, which can generally be divided into intermittent and constant exotropia; up and down strabismus refers to the eye position upward Or downward deviation, which is less common than esotropia and exotropia. Up and down strabismus are often accompanied b...

AI Technical Summary

Problems solved by technology

[0005] However, at present, during strabismus inspection, it is generally operated by the inspector holding a prism, which inevitably causes the prism to tilt during the process of moving the prism, causing the refraction direction of the prism to deviate; and even if a certain prism Align the eyeball, but it is also difficult to ensure the stability of the hand, and it is also difficult to control the distance between the prism and the eyeball. The above factors will not only increase the difficulty of the inspector's work, but also lead to inaccurate measurement results

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