CN201150531Y - Eye adjustment function tester - Google Patents

Abstract

The utility model relates to a device for testing the regulation functions of eyes, which provides an eye regulation function tester. The eye regulation function tester comprises a chassis, two support bars, a jaw supporter, a forehead protection bar, a visual target localizer, a left and a right shipper rods which are provided with chutes, a vernier type distance regulation which moves forward and backward, a front distance target rod and a rear distance target rod, wherein the lower ends of the two support bars are respectively fixed on the chassis, both ends of the jaw supporter are respectively sleeved on the lower end of the two support bars, both ends of the forehead protection bar are respectively fixed on the top ends of the two support bars, the front and the rear distance target rods are sleeved on either of the support bars, the vernier type distance regulation which front and back moves is slidingly sleeved on the front and the rear distance target rods, one ends of the left and right shipper rods are connected with the vernier type distance regulation which moves forward and backward, and the other ends of the left and right shipper rods are free, and the visual target localizer is embedded in the chutes of the left and right shipper rods. The eye regulation function tester solves the problems of fixing the head of a testee and keeping eyes on the same horizontal plane with visual targets. The eye regulation function tester is suitable for people with any pupillary distances, which has the advantages of convenient measurement, accurate data and excellent repeatability.

Description

Eye adjustment function tester

technical field

The utility model relates to a device for testing the adjustment function of eyes.

technical background

The reason why people can see objects at different distances clearly depends on the adjustment function of the eyes. In the resting emmetropic eye, the refractive system focuses the parallel light rays entering the eye on the rear main focal plane of the system, that is, the retina. Objects located at a limited distance, especially when they are close to the eye, the image is formed behind the retina, so the light beam is cut into an ellipse on the retina, so that the image of the object is unclear. At this time, to see the object clearly, the adjustment function of the eye must be called , The contraction of the ciliary muscle causes the lens to deform to increase the refractive power of the eye and move the focus forward to the retina.

The adjustment function of the eye plays an important role in the visual process, so it is often necessary to measure the adjustment function of the eye in the process of vision research and diagnosis and treatment of ophthalmic diseases. The traditional methods are finger method and ruler method. Although these methods are simple, the positioning is unstable and the readings are inaccurate. Therefore, there is a need for a novel, easy-to-operate, high-repeatability, and accurate eye adjustment test instrument.

Contents of the invention

The purpose of this utility model is to provide an eye adjustment function tester to overcome the defects of the prior art and meet the needs of related parties.

The eye adjustment function tester of the utility model comprises a base, two supporting rods, a jaw support, a forehead guard rod, a visual mark locator, a left and right moving rod provided with a chute, a front and rear moving vernier distance adjuster and a front and rear distance benchmark .

The bottom ends of the two struts are respectively fixed on the base, the two ends of the said jaw support are respectively set on the lower ends of the two struts, the two ends of the said forehead guard are respectively fixed on the tops of the two struts, Said front-to-back distance mark pole is enclosed within on a pole in the two poles, and said front and rear moving vernier type distance adjuster is slidably enclosed within on the front and rear distance mark pole, and one end of said left and right movement bar is connected with front and back The moving vernier type distance regulator is connected, the other end of the left and right moving rod is connected with the top of one of the two support rods, the other end of the left and right moving rod is free, and the said sight mark locator is embedded in the left and right moving rod. Inside the chute.

The eye adjustment function tester of the utility model solves the problem that the subject's head is fixed and the eye and the visual mark are kept on the same horizontal plane, and is applicable to people with any interpupillary distance, and has convenient measurement, accurate data and good repeatability.

Description of drawings

Fig. 1 is a structural schematic diagram of an eye adjustment function tester.

Detailed ways

Referring to Fig. 1, the eye adjustment function tester of the present utility model comprises a base 1, two support rods 2, a jaw support 3, a forehead guard rod 5, a sight mark locator 7, a left and right moving rod 8 provided with a chute, front and rear Move the vernier type distance adjuster 9 and the front and back distance mark rod 10.

The bottom ends of the two struts 2 are respectively fixed on the base 1, the two ends of the said jaw support 3 are respectively set on the lower ends of the two struts 2, and the two ends of the said forehead guard 5 are respectively fixed on two On the top of pole 2, said front and rear distance benchmark 10 is sleeved on a pole 2 in two poles 2, and said front and rear moving vernier distance adjuster 9 is slidably sleeved on front and rear distance benchmark 10 , one end of said left and right moving bar 8 is connected with front and rear moving vernier type distance adjuster 9, and the other end of left and right moving bar 8 is free, and said visual mark locator 7 is embedded in the chute of left and right moving bar 8.

Further, one or both ends of the jaw support 3 are provided with a jaw support lifting adjustment mechanism, and said jaw support lifting adjustment mechanism includes a knob 4 provided with an internal thread and an adjusting screw thread arranged on the pole 2, the knob 4 is connected to the jaw support. The bracket 3 is fixedly connected, and its internal thread meshes with the adjustment thread of the support rod 2, and the height of the jaw bracket 3 can be adjusted by rotating the knob 4;

Further, the upper surface of the jaw support 3 is provided with a jaw support pad 12;

Further, the forehead pad 6 is provided on the side of the forehead guard bar 5;

Further, the lower end of the front and rear distance benchmark 10 is provided with a front and rear distance benchmark lifting adjustment mechanism, and said front and rear distance benchmark lifting adjustment mechanism includes a lifting and lowering adjustment knob 11 provided with an internal thread and an adjustment screw thread that is arranged on the pole 2, and the lifting and lowering The adjustment knob 11 is fixedly connected with the front and rear distance benchmarks 10, and the internal thread of the lifting and lowering adjustment knob 11 engages with the adjusting thread of the pole 2, and the rotation of the lifting and lowering adjustment knob 11 can adjust the height of the front and rear distance from the benchmark 10.

The subject's lower jaw is placed on the jaw support pad 12, and the height of the jaw support 3 is adjusted using the jaw support lifting adjustment structure 4, so that the subject's forehead is attached to the forehead guard bar. The subject's eyes looked straight ahead, and the height of the front and rear distance from the benchmark 10 was adjusted by using the front and rear distance benchmark lifting adjustment structure 11, so that the left and right moving vernier-type sight mark locator 7 was on the same level as the eyes. When measuring the left eye (right eye) to adjust the near point, use a shade to cover the left eye (right eye), use the cursor type distance adjuster 9 to move back and forth so that the visual mark locator 7 is at the far end, and adjust the visual mark locator 7 left and right , so that the visual target is located directly in front of the left eye (right eye); adjust and move the vernier distance adjuster 9 back and forth, so that the visual target locator 7 is slowly approaching the eye, and when the visual target is in a critical state of clarity and blur, stop moving before and after Move the vernier distance adjuster 9 to read the distance from the visual target to the subject's cornea from the front and rear distance benchmarks 10, which is to adjust the near point distance. When measuring the near point of convergence, adjust the visual mark locator 7 left and right, so that the visual mark locator 7 is located on the vertical bisector of the line connecting the two eyes, adjust and move the vernier distance adjuster 9 back and forth, and let the visual mark locator 7 approach slowly Eyes, when the visual mark is found to have a double image, stop moving and move the vernier distance adjuster 9 back and forth, and read the distance from the visual mark to the subject's cornea from the front and rear distance benchmarks 10, which is the near-point distance of convergence.

Claims (7)

1. ocular accommodation tester, it is characterized in that, comprise base (1), two poles (2), jaw holder (3), volume guard bar (5), sighting target localizer (7), be provided with chute move left and right bar (8), move forward and backward cursor type range adjuster (9) and front and back apart from mark post (10);

The bottom of two poles (2) is separately fixed on the base (1), the two ends of said jaw holder (3) are enclosed within the lower end of two poles (2) respectively, the two ends of said volume guard bar (5) are separately fixed at the top of two poles (2), on said front and back are enclosed within a pole (2) in two poles (2) apart from mark post (10), the said cursor type range adjuster (9) that moves forward and backward slidably is enclosed within front and back on mark post (10), one end of said move left and right bar (8) with move forward and backward cursor type range adjuster (9) and be connected, the other end of move left and right bar (8) is free, and said sighting target localizer (7) is embedded in the chute of move left and right bar (8).

2. ocular accommodation tester according to claim 1 is characterized in that, the one or both ends of jaw holder (3) are provided with jaw holder lifting regulating mechanism.

3. ocular accommodation tester according to claim 2, it is characterized in that, said jaw holder lifting regulating mechanism comprises knob (4) that is provided with female thread and the adjusting screw thread that is arranged on pole (2), knob (4) is fixedlyed connected with jaw holder (3), the adjusting screw-threaded engagement of its female thread and pole (2).

4. ocular accommodation tester according to claim 1 is characterized in that, the upper surface of jaw holder (3) is provided with jaw pad (12).

5. ocular accommodation tester according to claim 1 is characterized in that, the side of said volume guard bar (5) is provided with volume pad (6).

6. according to each described ocular accommodation tester of claim 1～5, it is characterized in that front and back are provided with front and back apart from the mark post lifting regulating mechanism apart from the lower end of mark post (10).

7. ocular accommodation tester according to claim 6, it is characterized in that, said front and back comprise lift adjustment knob (11) that is provided with female thread and the adjusting screw thread that is arranged on pole (2) apart from the mark post lifting regulating mechanism, lift adjustment knob (11) is fixedlyed connected apart from mark post (10) with front and back, the adjusting screw-threaded engagement of the female thread of lift adjustment knob (11) and pole (2).

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