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Night blindness

Night blindness: Introduction

Any type of vision loss (e.g. blindness, blurred vision, double vision, etc.) is a symptom of great concern. Many of the causes are very serious medical conditions. Certain types of vision changes can be a medical emergency where delay can lead to loss of sight (e.g. for causes such as glaucoma, eye injury, retinal detachment) or loss of life (e.g. for causes such as stroke, TIA, etc.). Even transient or temporary blindness or loss of vision cannot be ignored because it can result from serious conditions such as stroke, TIA, hypertension, epilepsy, or migraine. Seek immediate professional medical attention for any such symptoms of vision changes....more »

» Review Causes of Night blindness: Causes | Symptom Checker » | Assessment Questionnaire »

Causes of Night blindness:

The following medical conditions are some of the possible causes of Night blindness. There are likely to be other possible causes, so ask your doctor about your symptoms.

» Review Causes of Night blindness: Causes | Symptom Checker » | Assessment Questionnaire »

Home Diagnostic Testing and Night blindness

Home medical tests possibly related to Night blindness:

Causes of Types of Night blindness:

Review causes of types of Night blindness in more specific categories:

Review causes of more specific types of Night blindness:

Night blindness: Symptom Checker

Listed below are some combinations of symptoms associated with Night blindness, as listed in our database. Visit the Symptom Checker, to add and remove symptoms and research your condition.

Symptom Checker

Symptom Checker

Night blindness Treatments

Some of the possible treatments listed in sources for treatment of Night blindness may include:

Review further information on Night blindness Treatments.

Stories from Users for Night blindness

Real-life user stories relating to Night blindness:

Message Boards for Night blindness

Symptom specific forums: The following patient stories in our interactive forums and message boards relate to Night blindness or relevant symptoms:

Diagnostic tests for Night blindness:

Various tests are used in the diagnosis of Night blindness. Some of these are listed below :

  • General inspection
    • Inspect for obvious signs of malnourishment which may suggest vitamin A deficiency as a cause of night blindness
  • Visual acuity - reflects the integrity of the central field.
  • Visual field examination
  • Ophthalmoscopy and slit lamp examination - to examine the optic nerve, macula and retina.
  • more tests...»

Night blindness: Animations

Medications or substances causing Night blindness:

The following drugs, medications, substances or toxins are some of the possible causes of Night blindness as a symptom. Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments.

Night blindness: Comorbid Symptoms

Some of the comorbid or associated medical symptoms for Night blindness may include these symptoms:

Causes of General Symptom Types

Research the causes of these more general types of symptom:

Research the causes of related medical symptoms such as:

Causes of Similar Symptoms to Night blindness

Research the causes of these symptoms that are similar to, or related to, the symptom Night blindness:

Assessment Questionnaire: Questions your doctor may ask (and why!)

During a consultation, your doctor will use various techniques to assess the symptom: Night blindness. These will include a physical examination and possibly diagnostic tests. (Note: A physical exam is always done, diagnostic tests may or may not be performed depending on the suspected condition) Your doctor will ask several questions when assessing your condition. It is important to openly share any pertinent information to help your doctor make an accurate diagnosis.

It is also very important to bring an up-to-date list of all of your all medical conditions, medications including dosages, and names of numbers of any specialist you see.

Create your printable checklist here.

See Night blindness Assessment Questionnaire (13 listings)

Night blindness: Deaths

Read more about causes and Night blindness deaths.

Night blindness: Research Related Doctors & Specialists

Other ways to find a doctor, or use doctor, physician and specialist online research services:

Night blindness: Undiagnosed Conditions

Conditions that are commonly undiagnosed in related areas may include:

Causes of Night blindness listed in Disease Database:

Other medical conditions listed in the Disease Database as possible causes of Night blindness as a symptom include:

Definitions of Night blindness:

Nyctalopia; inability to see clearly in dim light.
- (Source - Diseases Database)

Inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder
- (Source - WordNet 2.1)

Failure or imperfection of vision at night or in dim light, with good vision only on bright days.
- (Source - CRISP)

Night blindness is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Night blindness, or a subtype of Night blindness, affects less than 200,000 people in the US population.
- (Source - National Institute of Health)

Organs affected by Night blindness:

The list of organs typically affected by Night blindness may include, but is not limited to:

Detailed list of causes of Night blindness

The list below shows some of the causes of Night blindness mentioned in various sources:

How Common are these Causes of Night blindness?

This information refers to the general prevalence and incidence of these diseases, not to how likely they are to be the actual cause of Night blindness. Of the 134 causes of Night blindness that we have listed, we have the following prevalence/incidence information:

  • 2 causes are "very common" diseases
  • 3 causes are "common" diseases
  • 1 causes are "uncommon" diseases
  • 0 causes are "rare" diseases
  • 3 causes are "very rare" diseases
  • 130 causes have no prevalence information.

Conditions listing medical symptoms: Night blindness:

The following list of conditions have 'Night blindness' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.

Select from the following alphabetical view of conditions which include a symptom of Night blindness or choose View All.

View All A B C D E F G H K L M N O P R S T U V X











  • LORD ... night blindness










Conditions listing medical complications: Night blindness:

The following list of medical conditions have Night blindness or similar listed as a medical complication in our database. The distinction between a symptom and complication is not always clear, and conditions mentioning this symptom as a complication may also be relevant. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.


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Causes of Night blindness Based on Risk Factors

This information shows analysis of the list of causes of Night blindness based on whether certain risk factors apply to the patient:

  • Diabetes - history of diabetes or family history of diabetes?

    Doctors and specialists: Who should I consult about Night blindness?

    Depending on the seriousness of the onset of Night blindness, you may want to consult one of the following medical professionals.

    Important:In extreme cases, always seek advice from emergency services :

    What are the alternative names for Night blindness:

    - (Source - Diseases Database)

    Classifications of Night blindness:

    Medical Conditions associated with Night blindness:

    Vision changes (2526 causes), Vision loss (688 causes), Impaired vision (1545 causes), Blindness (496 causes), Visual problems (2143 causes), Vision symptoms (2526 causes), Eye symptoms (5412 causes), Face symptoms (8109 causes), Head symptoms (10192 causes), Nocturnal symptoms (698 causes), Vision distortion (1970 causes)

    Symptoms related to Night blindness:

    Blindness (496 causes), Vision loss (688 causes), Color vision loss, Blurred vision (982 causes), Retinitis pigmentosa (85 causes), Vitamin A deficiency, Malabsorption (219 causes), Celiac disease, Cystic fibrosis, Bile duct obstruction, Cirrhosis of the liver, Diabetes (212 causes), Cataracts (330 causes), Macular degeneration, Severe short-sightedness

    Medical articles on signs and symptoms:

    Doctor-patient articles related to symptoms and diagnosis:

    These general medical articles may be of interest:

    Medical News summaries about Night blindness

    Our news pages contain the following medical news summaries about Night blindness and many other medical conditions:

    Evidence Based Medicine Research for Night blindness

    Medical research papers related to Night blindness include:

    Research More Evidence-Based Medicine at

    Related medical articles from our Disease Center for Night blindness:

    More Ways To Research Medical Signs and Symptoms:


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