Exophthalmometers

Luedde Exophthalmometer

A clear perspex bar about 1cm square x 10cm long is shaped with a notch at one end and is graduated in cm and mm for measurement of eye protrusion.

Hertel Exophthalmometer:

The basis of the measurement for exophthalmos determination using the Hertel version is the outer orbital rim (orbital wall) and the apex of the cornea.

Naugle Mirror Exophthalmometer

These superior and inferior orbital rim based instruments measure the position of the globe accurately even after lateral orbitotomy e.g. post tumour removal or thyroid decompression. Easy to use, fast reproducible results and comfortable for the patient.