Macula lutea
An oval area in the retina, 3 to 5 mm in diameter, usually located temporal to the posterior pole of the eye and slightly below the level of the optic disk. It is characterised by the presence of a yellow pigment diffusely permeating the inner layers, contains the fovea centralis in its centre, and provides the best phototopic visual acuity. It is devoid of retinal blood vessels, except in its periphery, and receives nourishment from the choriocapillaris of the choroid.
Dictionary > Macula lutea
You will also like...
![Physical growth](https://www.biologyonline.com/wp-content/uploads/2020/02/Physical-Development-in-Humans-239x168.jpg)
Physical Development in Humans
This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..
![Structural depiction of catalase, an enzyme](https://www.biologyonline.com/wp-content/uploads/2020/02/Protein-Activity-and-Cellular-Metabolism-212x168.jpg)
Protein Activity and Cellular Metabolism
Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..
![Genetics and Evolution](https://www.biologyonline.com/wp-content/uploads/2020/02/Genetics-and-Evolution-300x168.jpg)
Genetics and Evolution
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
![Nephrolepis exaltata](https://www.biologyonline.com/wp-content/uploads/2020/02/Vascular-plants-ferns-and-relatives-252x168.jpg)
Vascular Plants: Ferns and Relatives
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
![Body temperature regulation by the hypothalamus](https://www.biologyonline.com/wp-content/uploads/2020/02/Temperature-Regulation-in-Animals-168x168.jpg)
Temperature Regulation in Animals
This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..
![Early Mammals on Earth](https://www.biologyonline.com/wp-content/uploads/2020/02/Early-Mammals-on-Earth-300x150.jpg)
Early Mammals on Earth
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..