PURPOSE: To present the first parallax-free exophthalmometer design. BACKGROUND: Exophthalmometry is an important clinical tool. We provide a historic overview of clinical exophthalmometer designs, and we review current problems encountered in exophthalmometry. METHODS: We present a new and parallax-free exophthalmometer design that we have evaluated in 49 patients visiting our orbital clinic. RESULTS: The mean age of the patients was 49.8 years and 72% were female. The Pearson interobserver variation was 0.97, and 94% of the Hertel values measured by the two observers were within the limits (1.6 mm) of agreement. CONCLUSION: This meter appears to be a reliable instrument for exophthalmometry. It is the first instrument that allows for a complete parallax-free measurement.
PURPOSE: To present the first parallax-free exophthalmometer design. BACKGROUND: Exophthalmometry is an important clinical tool. We provide a historic overview of clinical exophthalmometer designs, and we review current problems encountered in exophthalmometry. METHODS: We present a new and parallax-free exophthalmometer design that we have evaluated in 49 patients visiting our orbital clinic. RESULTS: The mean age of the patients was 49.8 years and 72% were female. The Pearson interobserver variation was 0.97, and 94% of the Hertel values measured by the two observers were within the limits (1.6 mm) of agreement. CONCLUSION: This meter appears to be a reliable instrument for exophthalmometry. It is the first instrument that allows for a complete parallax-free measurement.
Authors: Chad M Bingham; Jennifer A Sivak-Callcott; Matthew J Gurka; John Nguyen; Jeffery P Hogg; Steve E Feldon; Aaron Fay; Lay-Leng Seah; Diego Strianese; Vikram D Durairaj; Jimmy Uddin; Martin H Devoto; Matheson Harris; Justin Saunders; Tammy H Osaki; Audrey Looi; Livia Teo; Brett W Davies; Andrea Elefante; Sunny Shen; Tony Realini; William Fischer; Michael Kazim Journal: Ophthalmic Plast Reconstr Surg Date: 2016 Mar-Apr Impact factor: 1.746
Authors: Patrick Schmidt; Robert Kempin; Sönke Langner; Achim Beule; Stefan Kindler; Thomas Koppe; Henry Völzke; Till Ittermann; Clemens Jürgens; Frank Tost Journal: PLoS One Date: 2019-02-07 Impact factor: 3.240