Symptom >> Internal Medicine >> Neurology

Homonymous hemianopia

Introduction
Cause
Examine
Diagnosis

Introduction

Introduction The damage of the passage after the eye beam or the lateral geniculate body can produce a visual field defect on one side of the nasal side and the other side, which is called the same direction hemianopia.

Cause

Cause

Damage to the pathway after the beam or lateral geniculate body.

Examine

an examination

Related inspection

Ophthalmic examination of the eye and sacral area CT examination

Visual field examination can be diagnosed.

Diagnosis

Differential diagnosis

1 sacral hemianopia: If the bilateral nerve conduction to the nasal retinal vision caused by tumor compression is involved, bilateral stimuli may not be accepted and bilateral sacral hemianopia may occur. When the tumor grows up, the side loses its visual function due to the weight on one side, and the other side is blind, and the other side is unilaterally blind.

2 omnidirectional hemianopia: damage to the pathway after the optic tract or the lateral geniculate body can produce a visual field defect on one side of the nasal side and the other side of the iliac crest, which is called co-directional hemianopia. The visual beam is different from the central hemianopia. The former is accompanied by the disappearance of light reflection, and the latter has light reflection. The former is blunt and complete, while the latter is more incomplete and quadrant hemian; the former patient's subjective sensory symptoms are more significant than the latter. No self-conscious symptoms; the latter's visual field center of vision is preserved, showing macular avoidance.