| 翻訳と辞書 |
| Humphrey Visual Field Analyser ： ウィキペディア英語版 |
Humphrey Visual Field Analyser
The Humphrey Visual Field Analyser (HVFA), is a tool for measuring the human visual field, it is used by by optometrists, orthoptists and ophthalmologists, particularly for detecting monocular visual field.
The results of the Analyser identify the type of vision defect. Therefore it provides information regarding the location of any disease processes or lesion(s) throughout the visual pathway. This guides and contributes to the diagnosis of the condition affecting the patient’s vision. These results are stored and used for monitoring the progression of vision loss and the patient’s condition.
==How it Works==
The Analyser projects a series of white light stimuli of varying intensities (brightness), throughout a uniformly illuminated bowl. The patient uses a buzzer to indicate when they see a light. This assesses the retina’s ability to detect a stimulus at specific points within the visual field. This is called retinal sensitivity and is recorded in ‘decibels’ (dB).〔
The Analyser currently utilises the Swedish Interactive Thresholding Algorithm (SITA); a formula which allows the fastest and most accurate visual field assessment to date. Results are then compared against an age-matched database which highlights unusual and suspicious vision loss, potentially caused by pathology.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Humphrey Visual Field Analyser」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|