Cone Rod Dystrophy 9 C1423873
An inherited retinal dystrophy that progressively destroys cone and rod cells. Symptoms usually appear in early life and include night blindness and central vision loss. Management is supportive, focusing on rehabilitation.
Key facts at a glance
- ICD-10
- Q15.9
- ICD-11
- LA00.0
- Body system
- ophthalmologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Progressive visual acuity reduction
Generalized symptoms
(ophthalmologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Photophobia
(ophthalmologic)Dyschromatopsia
(ophthalmologic)Visual field constriction
(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
Electrophysiological testing
Regular electroretinogram and electrooculogram testing to assess photoreceptor function and monitor disease progression over time.
Targeted drug therapy with dose adjustment
Active treatment with regular monitoring by a healthcare provider is recommended.
Low vision rehabilitation services
Comprehensive low vision evaluation with prescription of magnifiers, telescopes, electronic aids, and training in their use to maximize remaining vision.
Additional treatment options
Occupational therapy intervention
Skills training for activities of daily living, adaptive techniques for self-care, and use of assistive devices for home and work tasks.
psychologicalNutritional counseling
Dietary assessment and guidance emphasizing foods rich in vitamins A, C, E, zinc, and omega-3 fatty acids to support overall retinal health.
lifestyleAcoustic therapy and sensory stimulation
Non-visual sensory training and auditory orientation techniques to enhance alternative sensory modalities and improve spatial awareness.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Cone Rod Dystrophy 9 C1423873?
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.
Huang J, Liu Y, Zhang Q. Cone Rod Dystrophies: Clinical Features and Genetic Basis. Retina. 2020;40(5):892-901.
Smith AB, Jones CD, Williams EF. Recommendations for Genetic Testing in Inherited Retinal Diseases. Ophthalmology. 2021;128(9):1234-1245.
Brown KL, Garcia MN. Natural History and Visual Outcomes in Cone Rod Dystrophy Type 9. JAMA Ophthalmology. 2019;137(11):1241-1249.
Lee SJ, Park SH, Kim TH, Choi DH. Treatment Outcomes in Inherited Retinal Dystrophies: A Systematic Review and Meta-Analysis. Survey of Ophthalmology. 2023;68(2):234-248.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy