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Normal Pregnancy

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What to expect during pregnancy

Aches and pains during pregnancy Choosing the right practitioner Common symptoms during pregnancy Hyperemesis Gravidarum Morning sickness Pregnancy and travel Pregnancy and work Problems sleeping during pregnancy Skin and hair changes during pregnancy Teenage pregnancy

Preparing to go home with your baby

Cribs and crib safety Eat right during pregnancy Preparing your other children

Visits and Tests

Amniocentesis Chorionic villus sampling Genetic counseling before pregnancy Glucose tolerance test-pregnancy Monitoring your baby before labor Nuchal translucency Prenatal care in your first trimester Prenatal care in your second trimester Prenatal care in your third trimester

Macula lutea

Definition

When an eye is looking directly at an object, light rays from that object are focused on the macula lutea. This is a yellow oval spot ("lutea" is Latin for "yellow") at the center of the retina (back of the eye). The yellow color comes from the high concentration of lutein. It is the part of the retina that is responsible for sharp, detailed central vision (also called visual acuity). The macula lutea, also called fovea, contains a very high concentration of cones. These are the light-sensitive cells in the retina that give detailed central vision.

References

Cioffi GA, Liebmann JM. Diseases of the visual system. In: Goldman L, Cooney KA. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 391.

Schubert HD. Structure of the neural retina and retinal pigment epithelium. In: Yanoff M, Duker JS, eds. Ophthalmology. 6th ed. Philadelphia, PA: Elsevier; 2023:chap 6.1.

Taber's Cyclopedic Medical Dictionary. 24th ed. Philadelphia, PA: F.A. Davis Company; 2021. www.tabers.com/tabersonline. Accessed November 29, 2023.

Review Date: 11/8/2023

Reviewed By: Franklin W. Lusby, MD, Ophthalmologist, Lusby Vision Institute, La Jolla, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.