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Dilated fundus examination
Dilated fundus examination or dilated-pupil fundus examination (DFE) is a diagnostic procedure that employs the use of mydriatic eye drops (such as tropicamide) to dilate or enlarge the pupil in order to obtain a better view of the fundus of the eye.〔(Exam Information )〕 Once the pupil is dilated, examiners use ophthalmoscopy (funduscopy) to view the eye's interior, allowing assessment of the retina, optic nerve head, blood vessels, and other features. They also often use specialized equipment such as a fundus camera. DFE has been found to be a more effective method for evaluation of internal ocular health than non-dilated examination. It is frequently performed by ophthalmologists and optometrists as part of an eye examination.
Terms such as ''dilated fundus examination'', ''dilated examination'', and ''dilated patient'' are, sensu stricto, misnomers, because the participial adjective (''dilated'' or ''undilated'') is not meant to modify the following noun but rather the unexpressed noun "pupil". Expressing ''dilated-pupil'' + () is a usage nicety in careful writing, although most physicians do not bother, as the meaning is clear to them regardless.
Image:Same eye.jpg| An eye prior to dilation
Image:Result of Dilated fundus examination.JPG|Pupil of the same eye in its dilated state
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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