If navigating your route while driving at night has become too challenging for comfort, you may be experiencing nyctalopia. Characterized as impairment in night vision, nyctalopia is a symptom of a number of underlying conditions. Diagnosing the condition that is causing your declining ability to see adequately after dark will determine whether or not treatment options are available.
Signs of Nyctalopia
Night blindness does not mean a complete absence of vision at night. Night blindness indicates a diminished capacity to adjust to changes in lighting and the inability to visualize things clearly in the dark. The signs of nyctalopia are especially evident when attempting to drive at night. You may have observed the following signs the last time you took to the road after the sun went down:
These signs tend to appear worse to the sufferer when the nighttime navigation takes place during rainy weather. Whether conditions are dry or wet, the signs can become overwhelming and reduce a driver's confidence.
Your nyctalopia may be caused by a condition that can be corrected. Three of these conditions include the following:
Visual deficits caused by myopia can be improved with corrective lenses or with refractive surgery, such as the LASIK procedure. Cataracts ultimately lead to blindness. Pursuing a cataract surgery procedure can prevent this outcome and restore your overall vision, including night vision. By supplementing your diet with vitamin A and lutein, another valuable nutrient for maintaining eye health, you will correct your nutritional imbalance and help to reduce the chance of developing macular degeneration, another disease of the eye that results in vision loss.
The retina, which is the membrane located at the back of the eye, is responsible for receiving light signals from its photoreceptors, which are called rods. The signals are then processed by the retina and transmitted to the brain through the optic nerve. When the retina sustains degeneration, night blindness results. Such degenerative conditions are usually incurable. One incurable condition that causes night blindness in a rare congenital disorder called retinitis pigmentosa.
Other causes of nyctalopia that result from degeneration of the retina occur as part of the aging process. Such age-related degeneration typically strikes after the age of 40 and includes the following changes:
Some medications, including certain heart medications, glaucoma medications and bile acid sequestrants, carry the potential side effect of diminished night vision. Be sure to alert your physician and your optometrist or ophthalmologist of all prescription and over-the-counter medications that you are taking, and remember to mention any herbal and nutritional supplements that you take as well.
Coping with Incurable Nyctalopia
If you are experiencing a decrease in your night vision, especially while driving after dark, schedule an appointment with your optometrist for a vision exam and an evaluation of your ocular health. If the reason is determined to be incurable, you will have to make some lifestyle changes, such as no longer driving at night, to ensure your safety and the safety of others. You can also make adjustments to cope with your night blindness, such as installing nightlights in your home to lighten your path from room to room and using the flashlight application on your smartphone to illuminate a visual field in darkened settings.
For more information, contact Complete Family Vision Care or a similar location.Share
10 December 2015
My name is Natalie Hunter. I am 29 and an elementary teacher. I created this website because I recently discovered something and wanted to share it with others. I had been suffering headaches for the past year that seemed to be gradually growing in severity. I had tried over-the-counter medications, homeopathic remedies and even made appointments with my doctor. I was given a CT scan and tried prescription medications. Finally, the doctor asked if I have had my eyes checked, as eye strain and eye issues can also cause headaches. I made an appointment with an optometrist, received a prescription for eyeglasses and suddenly, my headaches went away. It seems easy, but I had no idea. If you have headaches, I hope my website helps you understand what to expect when visiting an optometrist and how it can help with your headaches.