A Comparison of Hertel Exophthalmometer Measurements Between Various Manufacturer`s Models.

Khwarg, Sang In

Original Article

Journal of the Korean Ophthalmological Society 1999;40(9):2349-2356.
Published online September 1, 1999.

A Comparison of Hertel Exophthalmometer Measurements Between Various Manufacturer`s Models.

Sang In Khwarg

Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.

다른 제작회사의 허텔씨 안구돌출계 측정값의 비교

곽상인(Sang In Khwarg)

Abstract

To detect differences among the measurements of the Hertel exophthalmometers at different bar sizes and with different anufacturer`s models, exophthalmometries were performed for 27 normal subjects and 24 patients with thyroid ophthalmopathy at the three different bar sizes and with the models of three different manufacturers. The measurements decreased with the decrease of the bar size and increased with the increase of the bar size in all situations. The measurements of three different manufacturer`s models at the same bar size were different from each other. Therefore, Hertel exophthalmometries should be performed at the same bar size and with the same manufacturer`s model to find the exact changes of exophthalmos between repetitious examinations.

Key Words: Har size;Hertel exophthalmometer;Manufacturer