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Cone Dystrophy X Linked With Tapetal Like Sheen C1844775

Published: July 22, 2026Updated: August 20, 2026

A rare X-linked inherited retinal disease affecting cone cells with a distinctive eye appearance, causing progressive central vision loss, color vision problems, and light sensitivity.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
Q15.9
ICD-11
LA00.0
Body system
ophthalmologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Decreased visual acuity

(ophthalmologic)

Generalized symptoms

(ophthalmologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Photophobia

(ophthalmologic)

Color vision deficiency

(ophthalmologic)

Peripheral visual field loss

(ophthalmologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Lifestyle modification and dietary intervention

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

UV-Protective Eyewear

Specialized tinted sunglasses with full UV protection to manage light sensitivity and protect remaining photoreceptor function from ultraviolet damage.

lifestyle
3

Low Vision Aid Training

Training in use of magnification devices, electronic aids, and contrast enhancement tools to optimize functional vision for reading, driving, and daily tasks.

lifestyle

Additional treatment options

Visual Function Surveillance

Regular monitoring of visual acuity, color discrimination, and electroretinogram responses to document disease course and evaluate potential treatment responses.

monitoring

Lutein and Zeaxanthin Supplementation

Macular pigment support through dietary sources or supplements containing lutein and zeaxanthin to potentially support cone cell function and visual performance.

dietary

Dark Adaptation Training

Specialized training exercises and techniques to improve contrast sensitivity and dark adaptation abilities, potentially slowing functional vision loss.

complementary

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Cone Dystrophy X Linked With Tapetal Like Sheen C1844775?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Mayer AK, Kohl S, Wissinger B. Molecular genetics of X-linked cone dystrophies. Ophthalmic Res. 2020.

review2020
2

Hamel CP, Bujakowska K, Neuille M, Lancelot ME. European guidelines for inherited retinal dystrophies including cone dystrophies. Orphanet J Rare Dis. 2022.

guideline2022
3

Thiadens AH, den Hollander AI, Riemslag FC. Clinical characterization of X-linked cone dystrophy with tapetal sheen. Invest Ophthalmol Vis Sci. 2019.

clinical_trial2019
4

Surgical and Medical Interventions for Inherited Retinal Dystrophies Consortium. Global prevalence and phenotypic spectrum of X-linked cone dystrophies: a systematic review and meta-analysis. Eye. 2021.

meta_analysis2021

Medication Comparisons

Compare medications used to treat Cone Dystrophy X Linked With Tapetal Like Sheen C1844775. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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