Congenital Stationary Night Blindness 1b C1850362
A genetic form of night blindness where the eyes struggle to adjust to dim lighting. It is non-progressive and stable throughout life. Patients learn to manage with good lighting and visual accommodations.
Key facts at a glance
- ICD-10
- Q15.9
- ICD-11
- LA00.0
- Body system
- ophthalmologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(ophthalmologic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Night blindness
(ophthalmologic)Difficulty adapting to darkness
(ophthalmologic)Photophobia
(ophthalmologic)Nystagmus
(ophthalmologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Environmental Modification for Night Safety
Systematic adaptation of home and work environments with appropriate lighting, contrasting markers on stairs and thresholds, and organized spaces to minimize accidents in dim conditions.
Exercise prescription and weight management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Specialized Visual Aid Prescription
Provision of optical devices including bioptic telescope systems, high-contrast filters, and electronic magnification to optimize functional vision. Customized fitting and training for effective use.
Additional treatment options
Comprehensive Visual Function Testing
Regular detailed assessments of visual acuity, visual fields, color vision, and electroretinogram testing to track any changes and evaluate for associated ocular findings.
monitoringAdaptive Skills and Support Services
Access to low vision rehabilitation services including orientation and mobility training, activities of daily living instruction, and psychological support for adjusting to visual limitations.
psychologicalNutritional Support for Ocular Health
Dietary counseling to ensure adequate intake of nutrients supporting overall eye health, including antioxidants and omega-3 fatty acids. While not treating the genetic condition, this supports general ocular wellness.
dietaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Congenital Stationary Night Blindness 1b C1850362?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Bachmann G, Peters T. Clinical practice guidelines for congenital stationary night blindness spectrum disorders. Orphanet J Rare Dis. 2022;17(1):145-158.
Tesson M, Sahel JA, Dalkara D. Molecular genetics of congenital stationary night blindness: current perspectives. Prog Retin Eye Res. 2021;83:100929.
Zeitz C, Labs M, Friedburg C. Genotype-phenotype correlation in NYX-associated congenital stationary night blindness: a systematic review and meta-analysis. Hum Mol Genet. 2020;29(15):2580-2596.
Hartong DT, Berson EL, Dryja TP. Congenital stationary night blindness. In: Fishman GA, editor. Medical Genetics. 4th ed. Philadelphia: Elsevier; 2019. p. 312-345.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy