. Author manuscript; available in PMC: 2024 Nov 21.

Published in final edited form as: J Neurosurg. 2019 Aug 23;133(4):1044–1051. doi: 10.3171/2019.6.JNS191158

TABLE 1.

Visual deficit severity criteria

	Visual Acuity	Visual Field Deficit
None	20/20	None
Mild	20/25–20/100	Blurriness &/or field defect present
Severe	20/200 or worse

According to Oya et al.¹³