|Other encyclopedia topics:||A-Ag Ah-Ap Aq-Az B-Bk Bl-Bz C-Cg Ch-Co Cp-Cz D-Di Dj-Dz E-Ep Eq-Ez F G H-Hf Hg-Hz I-In Io-Iz J K L-Ln Lo-Lz M-Mf Mg-Mz N O P-Pl Pm-Pz Q R S-Sh Si-Sp Sq-Sz T-Tn To-Tz U V W X Y Z 0-9|
|Contents of this page:|
Alternative Names Return to topNyctanopia; Nyctalopia; Night blindness
Definition Return to top
Night blindness is poor vision at night or in dim light.
Considerations Return to top
Night blindness may cause problems with driving in the evening or at night. People with night blindness often have trouble seeing the stars on a clear night.
Causes Return to top
In some cases, the eyes may simply have trouble adapting to darkness. The problem may not be due to another medical condition. However, it is often linked to myopia (nearsightedness).
Home Care Return to top
Take safety measures to prevent accidents in the areas of low light. Avoid driving a car at night.
Vitamin A supplements may be helpful.
When to Contact a Medical Professional Return to top
It is important to have a complete eye exam to determine the cause, which may be treatable. Call your eye doctor if symptoms of night blindness persist or significantly affect your life.
What to Expect at Your Office Visit Return to top
Your health care provider will examine you and your eyes. The goal of the medical exam is to determine if the problem can be corrected (for example, with new glasses or cataract removal), or if the problem is due to something more serious.
The doctor may ask you questions, including:
A slit lamp examination may be done.Update Date: 8/22/2008 Updated by: Paul B. Griggs, MD, Department of Ophthalmology, Virginia Mason Medical Center, Seattle, WA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.