Internal Medicine

P1: SBT

0521779407-03 CUNY1086/Karliner 0 521 77940 7 June 7, 2007 19:6

104 Amaurosis Fugax Amblyopia

specific therapy

■Carotid endarterectomy for ipsilateral localized stenotic lesion (70%

or more)

■Treat or control cardiac arrhythmia or continue warfarin

■General measures: stop cigarette smoking, treat underlying medical

disorders (polycythemia, hypertension, diabetes, hyperlipidemia)

follow-up

■As necessary to control anticoagulants for disturbance of cardiac

rhythm

■Every 3 months to ensure no further TIAs or episodes of amaurosis

fugax

complications and prognosis

■Stroke may occur w/o treatment; see “Transient Ischemic Attacks”

Amblyopia.........................................

CREIG S. HOYT, MD

history & physical

History

■Loss of visual acuity:

➣More profound when snellen isotypes read in series equaling

crowding phenomenon

➣More profound in recognition acuity than spatial frequency tests

➣More profound in reducing background luminance or w/

neutral-density filter in front of involved eye

Signs & Symptoms

■Afferent pupil may be positive in 1/4 to 1/3 of cases

tests

Color Vision

■Normal w/ usual clinical suspects

Electrophysiologic

■ECG normal

■VEP (pattern) normal or? amplitude