J Korean Ophthalmol Soc.  1975 Sep;16(3):205-208.

Classification of the Optic Disk based on branching of the central retinal artery

• Jeong TM
• Lee JH
• Kim SD
• Choi O

Abstract

The first phase of this study was limited to the relation of the retinal arteries to the quadrants of the optic disk. After examination of hundreds of normal eyegrounds, it became apparent that there are several definite and easily recognizable variations in the distribution of the vessels as they emerge from the optic nerve head. The classification is made by dividing the surface of the nerve head into four quadrants, i.e., the upper and lower nasal and the upper and lower temporal. Since there are four main branches of the retinal artery, namely, the superior and inferior temporal and the superior and inferior nasal, there are nine possible variations in the distribution of these vessels over the surface of the optic nerve head.

MeSH Terms

Classification*
Head
Optic Disk*
Retinal Artery*