<unk>  (bi-: both eyes, temporal: temporal/peripheral, hemi-: half, anopsia: blindness) is defect in visual pathway causing loss of sight in the outer half of the visual field. A lesion compressing or disrupting optic chiasm would result in<unk> . Additional symptoms such as Headache, Diplopia, Endocrine disorders can be present. Most common causes are Pituitary macroadenoma, Craniopharyngioma, Meningioma and Aneurysm of anterior communicating artery. Visual field defects can be diagnosed using Standard Automated Perimetry (SAP). CT Imaging and MRI usually reveal the underlying cause. While vision loss can be improved by treating the underlying cause, sometimes it can be permanent.
Bitemporal hemianopia
Binasal hemianopsia
Asthenopia
Marcus Gunn pupil
Conjugate gaze palsy
Blown pupil
Presbyopia
Scintillating scotoma