Exophthalmometer

Characteristics

Lighter Weight
Precise Measurement
Stable Performance
Compact Package

About The Exophthalmometer

An exophthalmometer is an ophthalmic examination device used to measure the degree of protrusion of the eyeball. Different types of exophthalmometers are available based on their operating principles and functions. The Hertel exophthalmometer, consisting of graduated parallel rods and a sliding measuring device, with a plane mirror for viewing the readings, is the most widely used in clinical practice.

Technical Specifications

Measurement Range	0~35mm
Measurement Accuracy	0.5mm
Orbital Distance Adjustment Range	80~120mm
Product Size	2417028mm
Product Weight	400g

How to Use the Exophhtalmometer

Easy Use

Our HEM300 exophthalmometer is used for precise measurements of exophthalmos (e.g., exophthalmic goiter). The basis of determining exophthalmos using the Hertel version is the outer orbital rim (orbital wall) and the apex of the cornea. The integral refraction mirrors with millimeter scales for the left-hand and right-hand measuring halves of the exophthalmometer are calibrated so that the zero mark on the scale will be located in the plane of the resting points of the supports. For exophthalmos measurements, the supports are placed against the two temporal orbital walls so that the orbital rim contacts the deepest point of the supports.

Easy Maintenance

Our Hertel exophthalmosometer is made of easy-to-clean materials, is durable, easy to maintain and clean, and is very suitable for the needs of busy doctors.

Exophthalmometer Application

The average normal exophthalmos in our country is 11.68-13.93 mm (as of 2024). A difference of more than 2 mm between the two eyes, or a value exceeding 21 mm, may indicate pathological exophthalmos. Measurement results can help diagnose conditions such as orbital tumors and hyperthyroidism, and monitor changes in the condition to adjust treatment plans.

Case for Exophthalmometer

Our aluminum box packaging is inlaid with a soft elastic protective layer to effectively prevent the exophthalmometer from being damaged.

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Hertel Exophthalmometer in Stock

Related Products (4)

What Is Exophthalmos ?

Exophthalmos is a method used to measure the protrusion of the eyeball.

How to Measure Exophtalmos ?

There are two methods to measure exophthalmos, Including the ordinary scale measurement and the Hertel ophthalmoscope measurement.

How To Measure by Ordinary Scale?

sing a special transparent ruler or an ordinary ruler, the zero point is placed on the lateral temporal orbital margin, and the client is asked to look forward. The examiner observes the scale of the corneal apex on the ruler from the side (the vertical distance from the temporal orbital margin to the corneal apex), which is the exophthalmos. In the same way both eyes are examined and recorded, this method can only make a general measurement.

How to Measure by Hertel Method?

It is a commonly used and more accurate inspection method. The eye protrusion meter is mainly composed of a flat rod with a scale and two measuring instruments. One measuring device is fixed at one end of the bar, and the other can slide freely on the bar to adapt to different orbital distances, and the orbital distance value can be read from the scale of the bar. The measuring instrument is equipped with a small scale plate and two flat mirrors crossed at a 45° Angle to reflect the scale plate value and the corneal vertex image respectively.

Attentions During Measurement?

During the measurement, the tester and the client sit opposite each other, insert the upper notch of the ophthalmoscope into the temporal orbital margin of the client, and ask the client to look forward. At this time, the value of the corneal apex seen in the two flat mirrors is the exophthalmos. At the same time, the values of two orbital distances were obtained from the scale on the flat bar, and the orbital distances and the values of each eyeball prominence were recorded. The same orbital distance should be used for follow-up observation.

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