The cornea is the front part of the eye. It is the clear transparent section of the eye. The cornea covers the iris, pupil, and the eye chamber. It is a special form of tissue. The cornea is clear and has no blood vessels. It has nerves, but with no myelin sheaths on them.
| Cornea | |
|---|---|
 Schematic diagram of the human eye showing the cornea as separated from the sclera by the corneal limbus | |
| Details | |
| Part of | Front of eye |
| System | Visual system |
| Identifiers | |
| Latin | cornea |
| MeSH | D003315 |
| TA | A15.2.02.012 |
| FMA | 58238 |
| Anatomical terminology | |
The cornea, with the lens, refracts light. The cornea and the lens bend light so the image strikes the retina. The cornea does about two-thirds of this refraction.[1][2]
Dua's layer is a newly discovered layer of the cornea. It was described in June 2013.[3] It is the sixth layer of the cornea to be discovered.[4][5] Despite its thinness, the layer is very strong, and air does not get through it.[3]
References
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- ↑ Cassin, Barbara; Solomon, Sheila A. B. (March 15, 1990). Rubin M.D., Melvin L. (ed.). Dictionary of eye terminology (2nd ed.). Gainsville, Florida: Triad Publishing Company. ISBN 978-0937404331.
- ↑ Goldstein, E. Bruce (2012). Sensation & perception (7th ed.). Canada: Thompson Wadsworth. ISBN 978-0878935727.
- ↑ 3.0 3.1 Dua H.S. et al 2013. Human corneal anatomy redefined: a novel pre-Descemet's layer (Dua's layer). Ophthalmology. Dua, Harminder S.; Faraj, Lana A.; Said, Dalia G.; Gray, Trevor; Lowe, James (2013). "Human Corneal Anatomy Redefined". Ophthalmology. 120 (9): 1778–1785. doi:10.1016/j.ophtha.2013.01.018. PMID 23714320.
- ↑ Olson, Samantha. "New cornea layer discovered in human eye: doctors predict safer and simpler eye treatments". Medical Daily. Archived from the original on 18 June 2013. Retrieved 14 June 2013.
- ↑ "New layer of human eye,'Dua's layer', discovered behind cornea". Huffington Post Live Science. 12 June 2013. Retrieved June 13, 2013.
