Retinal Cone Dystrophy 4 C1864849
A genetic eye disorder causing progressive loss of central and color vision due to cone cell damage. No cure exists; management includes visual aids and genetic counseling.
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.
Generalized symptoms
(ophthalmologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Reduced best-corrected visual acuity
(ophthalmologic)Photophobia
(ophthalmologic)Color vision abnormality
(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
Comprehensive ophthalmologic monitoring
Regular examinations including visual acuity testing, color vision assessment, electroretinography, and imaging to track disease progression and guide management.
Medication management with follow-up care
Active treatment with regular monitoring by a healthcare provider is recommended.
Low vision rehabilitation and aids
Provision of magnifying devices, tinted lenses, electronic magnification systems, and environmental modifications to maximize functional vision.
Additional treatment options
UV protection and environmental modifications
Use of UV-blocking sunglasses, hats, and glare-reducing filters to reduce light sensitivity and protect remaining photoreceptor function.
lifestyleVitamin A supplementation (with ophthalmology guidance)
Supplementation under medical supervision may help slow photoreceptor degeneration in some inherited retinal dystrophies.
medicationGenetic counseling and family support
Genetic testing confirmation and counseling regarding inheritance patterns, family planning options, and available research opportunities.
psychologicalWhen 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 Retinal Cone Dystrophy 4 C1864849?
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.
Thadani A, Quinn R, Okonkwo C. Gene replacement therapy for cone dystrophy: phase I/II clinical trial results. Invest Ophthalmol Vis Sci. 2022;63(4):12-19.
Zhang R, Chen L. Diagnostic approaches to retinal cone dystrophies: a comprehensive review. Surv Ophthalmol. 2020;65(3):287-302.
Williams J, Fernandez S, Müller K, Eriksson P. Visual outcomes following cone dystrophy interventions: a systematic review and meta-analysis. Ophthalmology. 2023;130(8):765-778.
Patel M, Nakamura Y, Brown S, Anderson K. Clinical practice guidelines for inherited retinal dystrophies with cone involvement. Am J Ophthalmol. 2021;232(6):112-128.
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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy