Comparison of unilateral and simultaneous bilateral measurement of the globe position, using the Hertel exophthalmometer
| Autor: | Hossein Ameri, Sinead Fenton |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Adult
Male medicine.medical_specialty genetic structures Adolescent Diagnostic Techniques Ophthalmological Eye Mean difference Orbital disease Ophthalmology medicine Exophthalmos Humans Exophthalmometer Prospective Studies Aged Observer Variation business.industry Reproducibility of Results General Medicine Middle Aged eye diseases Left eye Interobserver Variation Surgery Female sense organs Observer variation business Orbit |
| Zdroj: | Ophthalmic plastic and reconstructive surgery. 20(6) |
| ISSN: | 0740-9303 |
| Popis: | PURPOSE To assess the effect of simultaneous measurement of the two eyes in Hertel exophthalmometry (i.e., when both readings are taken sequentially, without removing the instrument from the orbital rims) and to find out whether simultaneous measurement would influence the final reading of each eye. METHODS In this prospective, comparative study, Hertel exophthalmometry was performed on 61 patients by two experienced observers. Only patients with no history of orbital disease were included. Three different measurements were performed on each patient by each observer. Initially, the right eye was measured separately, then the left eye was measured separately, and finally, both eyes were measured together. RESULTS When the eyes were measured separately, in 30% of cases observers obtained equal readings in both eyes; in 47%, the difference between the two eyes was 1 mm; and in 23%, the difference was 2 mm or more. However, in simultaneous bilateral measurements, in 73% of cases, observers obtained equal readings in both eyes; in 24%, the difference between the two eyes was 1 mm; and only in 3% was the difference 2 mm or greater. Paired t tests showed that the mean difference between measurements of the two eyes was significantly smaller in simultaneous bilateral measurements (p |
| Databáze: | OpenAIRE |
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