The sclera and cornea form the fibrous tunic of the bulb of the eye; the sclera is opaque, and constitutes the posterior five-sixths of the tunic; the cornea is transparent, and forms the anterior sixth.
The term "corneosclera" is also used to describe the sclera and cornea together.[1]
References
This article incorporates text in the public domain from page 1005 of the 20th edition of Gray's Anatomy (1918)
| Fibrous tunic (outer) |
|  | |||||
|---|---|---|---|---|---|---|---|
| Uvea / vascular tunic (middle) |
| ||||||
| Retina (inner) |
| ||||||
| Anatomical regions of the eye |
| ||||||
| Other | |||||||
