Dilated fundus examination

Dilated Fundus Examination

Dilated fundus examination (pronunciation: /daɪˈleɪtɪd/ /ˈfʌndəs/ /ɪgˌzæmɪˈneɪʃən/), also known as fundoscopy or ophthalmoscopy, is a diagnostic procedure used to evaluate the health of the retina, optic disc, and the underlying layer of blood vessels.

Etymology

The term 'dilated' originates from the Latin word 'dilatare', meaning 'to enlarge or expand'. 'Fundus' is also a Latin word, referring to the 'bottom' or 'base' of an object. In this context, it refers to the back part of the eye. 'Examination' is derived from the Latin 'examinare', meaning 'to weigh or test'.

Procedure

During a dilated fundus examination, an ophthalmologist or optometrist administers eye drops to dilate, or widen, the pupil. This allows a more comprehensive view of the retina and other structures at the back of the eye. The healthcare provider then uses a special magnifying lens and a light source to examine the eye.

Related Terms

Retina: The light-sensitive layer of tissue at the back of the inner eye.
Optic Disc: The point of exit for ganglion cell axons leaving the eye.
Pupil: The opening in the iris, which allows light to strike the retina.
Ophthalmologist: A specialist in medical and surgical eye problems.
Optometrist: A healthcare professional who provides primary vision care.

Importance

A dilated fundus examination is crucial for diagnosing and managing many eye conditions, including diabetic retinopathy, macular degeneration, and glaucoma. It can also reveal signs of systemic diseases such as hypertension and diabetes.