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Silent occult choroidal vascular abnormalities
F C Piccolino1, L Borgia, E Zinicola
1University Eye Clinic of Genoa, Italy.
Retina (Philadelphia, Pa.)
|February 27, 1999
Summary
Indocyanine green angiography can reveal silent, occult choroidal vascular abnormalities. These vascular lesions, distinct from other eye conditions, appear as hyperfluorescent areas on ICG imaging.
Area of Science:
- Ophthalmology
- Medical Imaging
- Vascular Biology
Background:
- Indocyanine green (ICG) angiography is a key diagnostic tool in ophthalmology.
- Clinically occult choroidal vascular abnormalities can present diagnostic challenges.
Observation:
- ICG angiography incidentally revealed occult choroidal vascular abnormalities in eight patients.
- These lesions were not detectable by funduscopy, fluorescein angiography, or ultrasound.
- Induced intraocular hypertension and follow-up examinations provided further characterization.
Findings:
- The abnormalities appeared as round-oval, hyperfluorescent areas on ICG angiograms.
- Lesions filled with choroidal arteries and showed delayed fluorescence washout.
- Evidence of choroidal arterial abnormalities, draining vessels, and hypoperfusion was observed.
Implications:
- ICG angiography can detect previously unrecognized choroidal vascular conditions.
- Distinguishing these abnormalities from other chorioretinal disorders is crucial for accurate diagnosis.
- These findings expand the diagnostic utility of ICG angiography in identifying subtle vascular pathologies.