The human eyes are color blind at night: two views of the Milky Way

  • Keng Yin Loh

Abstract

The photoreceptors neurons in the retina comprise rods and cones. They are capable of transforming light stimulus into a nerve impulse, which subsequently conducted by the optic nerve to the occipital cortex. The rods function only in dim light and are not sensitive to colour whereas the cones respond well to bright light and are sensitive to colour.

The macula is responsible for best visual acuity and for colour vision; most of its photoreceptors are cones. Rods are absent at the centre of the macula, it is situated more at the peripheral and the primary function of the rods is for peripheral and night vision. (copied from article)

References

FitzGerald MJT and Curran JF. Clinical neuroanatomy and related neuroscience. 4th ed. Edinburgh. WB Saunders,2002:231-2.

Hardy RA. Retina. In: Vaughan & Asbury’s General Ophthalmology, 16th Ed., Riordon-Eva, Whitcher J(Ed). Lange Medical Books/ McGraw Hill, 2004:189-90.

Published
2006-10-01
How to Cite
LohK. Y. (2006). The human eyes are color blind at night: two views of the Milky Way. Malaysian Family Physician, 1(2 & 3), 1. Retrieved from https://www.e-mfp.org/ojs3/index.php/MFP/article/view/219
Section
Original Articles