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Doctor insights on: Degraded Night Vision

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Is having poor night vision a symptom of glaucoma?

Is having poor night vision a symptom of glaucoma?

Possible: Not a typical presenting symptom but at more advanced stages, especially if both eyes affected, contrast sensitivity will be decreased. ...Read more

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Dr. Richard Bensinger
1,698 doctors shared insights

Vision (Definition)

Vision is a feature of a person's brain that allows him to see. He must have normal eyes, optic nerves (that stretch from the eyes to the back of his brain), and visual cortex (the vision center in the brain), in order to see properly. An ophthalmologist is a ...Read more


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I've been having static vision when I look to the sky night and day random white and dark spots suddenly poor night vision and after imagines. ?

I've been having static vision when I look to the sky night and day random white and dark spots suddenly poor night vision and after imagines. ?

Vision is one of: our most important and precious senses. You need to make an appointment with your eye care professional (optometrist or ophthalmologist ASAP. If you can't be seen in the next few days or If you have eye pain, redness or tenderness to touch of the eyeball along with these vision changes, seek IMMEDIATE medical care. Please!!! Dr. Anne ...Read more

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Poor night vision: do I have any options other than driver?

Poor night vision: do I have any options other than driver?

Corrective lenses: We all get more myopic (near-sighted) at night (stiles-crawford effect). Sometimes a stronger spectacle rx is needed for driving in the dark. There are retinal conditions that can cause poor night vision (search "nyctalopia"). A refraction performed with pupils dilated and ability to accommodate paralyzed can establish baseline spectacle rx, . In older people, a common cause is cataracts. ...Read more

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What is the definition or description of: Poor night vision?

What is the definition or description of: Poor night vision?

Poor night vision: Poor night vision means vision is worse than 20/40 under night time conditions or with glare from oncoming cars. Most common cause is a cataract, dry eyes. Other possible causes include a poor diet (lack of veggies), macular degeneration, glaucoma. Let us know if you have any other questions. ...Read more

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If I have poor night vision, does that mean that my eye health is pretty bad?

If I have poor night vision, does that mean that my eye health is pretty bad?

Get checked out: Although reversible loss of night vision may be associated with vitamin a deficiency, this is not likely in developed countries with normal diet. How long have you had poor night vision? Do you have congenital hearing loss? Loss of night vision may more likely be secondary to a variety of retinal dystrophies, including, most notably, retinitis pigmentosa (rp). When associated with congenital hearing loss, rp is part of usher’s syndrome. Symptoms are progressive nyctalopia (night vision loss) and constriction of visual fields (ie: inability to see immediate surroundings like stair rails or peripheral traffic when gazing forward). Other conditions may cause similar symptoms but are less common. Diagnosis is made by ophthalmologic examination including ophthalmoscopy, erg and visual field testing. Cataracts may occur and further impair vision. Unfortunately, there is presently no recommended therapy to arrest or cure these conditions but research is being conducted into the effects of neuroprotective agents as well as surgical remedies with stem cell and retinal pigment epithelial replacement. Please have your eyes dilated and examined. ...Read more

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I have really poor night vision only in my left eye due to cataract?

I have really poor night vision only in my left eye due to cataract?

Possibly: You are a little young to have a cataract, but it is possible. However, there are numerous other reasons for decreased vision at night. You should see your eye md for a complete examination. ...Read more

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What are techniques to improve night vision?

What are techniques to improve night vision?

Pray: Zero, unless you live in an area of vitamin a deficiency- then eat some carrots or take vitamin a. ...Read more

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Should i consider getting reflective contacts for night vision?

? Reflective: I am not aware of reflective contact lenses. There is also no such thing as contacts for night vision. Most people become a little nearsighted at night. Easier to just get glasses for night which have a mild myopic correction in them. ...Read more

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What are the rods and cones functions in terms of night vision?

What are the rods and cones functions in terms of night vision?

Rods are for night: Cones detect color, and work best in bright light. The rods are the cells of the retina that function at night, allowing you so see better in dim light conditions. ...Read more

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Lasik - night vision.?

Lasik - night vision.?

Some get glare: Some patients will notice glare or "haloes" around lights at night following lasik surgery. In the majority of cases, it is not severe and dissipates over several months following the procedure. Nearly all patients who have lasik are pleased that they did, although the displeased minority is very vocal in online communities. A prudent lasik surgeon will discuss these risks before the procedure. ...Read more

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Do eyeglasses really help bad night vision?

Do eyeglasses really help bad night vision?

Yes: At night, your pupils dilate. This (along with a few other changes that occur at night) may cause a temporary change in your glasses prescription leading to "night myopia" or slight nearsightedness at night. This makes many people feel as though they have "bad night vision" but really a small glasses prescription to be worn at night particularly while driving can help night vision. ...Read more

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Will carrots help with decreased night vision?

No: Carrots are a good source of vitamin a, critical for vision but the usual, even not so good, usa diet contains enough of this so that vitamin a deficiency is rare. The only reported cases have been in people on bizarre diets like polished rice only. Carrots can be satisfying but will not help night vision unless you are recovering from a bizarre diet. ...Read more

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Bad night vision due to too much time spent in front of the monitor & tv. What do you suggest?

Bad night vision due to too much time spent in front of the monitor & tv. What do you suggest?

Evaluation: Overuse of a monitor or tv can lead to fatigue but will not cause bad night vision. There are other causes for this and it depends of course on "how bad". You should consult with your ophthalmologist to determine the level of night difficulty and what can be done about it. ...Read more

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How can you improve your night vision?

Depends: For individuals with normal retinal function, there is, unfortunately, no way to develop superhero grade night vision. Conversely, for patients with decreased night vision or “nyctalopia”, as a result of dietary vitamin a deficiency, vitamin a supplementation will hopefully restore normal human grade night vision. Patients with degenerative conditions such as retinitis pigmentosa, unfortunately, lose night vision and peripheral vision from progressive photoreceptor loss. Patients with congenital stationary night blindness, cone/rod dystrophies and other degenerative disorders also have photoreceptor loss with loss of night vision. Although until now there hasn’t been much to offer these patients, research is currently underway investigating a large array of agents which may offer them some hope for the future. ...Read more

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Will bilberries help my night vision?

Will bilberries help my night vision?

Maybe: There were some studies many years back that demonstrated improved night vision if taking bilberry. 1 randomized study and 7 non- randomized studies demonstrated positive effect from bilberry. The 4 most recent randomized controlled studies demonstrate no affect of bilberry on night vision. http://www.ncbi.nlm.nih.gov/pubmed/14711439 and http://www.Thorne.Com/altmedrev/.Fulltext/5/2/164.Pdf. ...Read more

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Can chlorophyll improve your night vision?

Can chlorophyll improve your night vision?

No: These are unrelated and there is no effect of this otherwise wonderful chemical, on eyesight. ...Read more

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Is it true that carrots help your night vision?

Depends: The basis for this "old wive's tale" is that, accurately, carrots as well as other yellow/orange vegetables and gourds (squash, pumpkin) are fantastic sources of vitamin a, an essential vitamin required for photoreceptor (cone/rod) metabolism. While severe vitamin a deficiency may lead to serious, but generally reversible, vision problems, such as night blindness, most people in developed countries meet more than their daily vitamin a requirements from normal diets and there is no need to consume exorbitant amounts of carrots. In fact, vitamin a excess may be toxic to the liver and some clinical studies have demonstrated that excess vitamin a metabolites may actually be potentially toxic to photoreceptors. ...Read more

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