Yellow–Orange Maculopathy (Carotenoid Excess)

Overview

Yellow–orange maculopathy is a rare, usually benign, retinal condition in which the macula (the central part of the retina responsible for sharp, colour‑rich vision) takes on a yellow‑orange hue due to the accumulation of dietary carotenoids—most commonly beta‑carotene, lutein, and zeaxanthin. The condition is sometimes referred to as “carotenoid maculopathy” or “carotenemia of the retina.”

Although the macular appearance can be striking on fundoscopic examination, visual acuity is often preserved, especially in the early stages. The condition is most often seen in individuals consuming very high amounts of carotenoid‑rich foods or supplements, and it can be associated with certain metabolic disorders that impair carotenoid clearance.

Who it affects

• Adults 30–70 years old who follow high‑carotenoid diets (e.g., heavy vegans, raw‑food enthusiasts).
• People taking large doses of carotenoid supplements (≥ 25 mg β‑carotene daily or ≥ 20 mg lutein/zeaxanthin combined).
• Patients with hepatic or lipid‑metabolism disorders that reduce carotenoid clearance (e.g., non‑alcoholic fatty liver disease, familial hypercholesterolemia).

Prevalence

Because the condition is usually asymptomatic, exact prevalence is unknown. Small case series from ophthalmology clinics estimate a prevalence of 0.02 %–0.06 % among patients undergoing routine retinal imaging. In populations that consume very high carotenoid diets (e.g., some Caribbean islands), the prevalence may be modestly higher, but still < 1 %.

Symptoms

Most patients are discovered incidentally during routine eye exams. When symptoms occur, they are usually mild.

• Yellow‑orange discoloration of the macula—visible to the eye‑care professional during ophthalmoscopy or fundus photography.
• Glare or mild photophobia—especially in bright sunlight.
• Reduced contrast sensitivity—difficulty distinguishing subtle shades of gray.
• Blurry central vision—rare and usually only when carotenoid deposition is extensive.
• No pain, redness, or floaters—these are not typical of carotenoid excess.

Causes and Risk Factors

Primary causes

• Excessive dietary intake of carotenoid‑rich foods (e.g., carrots, sweet potatoes, pumpkins, mangoes, apricots, spinach, kale, corn).
• High‑dose carotenoid supplementation—often marketed for eye health, skin protection, or antioxidant benefits.
• Metabolic disorders that impair hepatic uptake or transport of carotenoids (e.g., liver cirrhosis, cholestasis, genetic lipoprotein deficiencies).

Risk factors

• Daily consumption of > 5 cups of raw carrots or equivalent carotenoid load.
• Use of carotenoid supplement regimens exceeding recommended dosages (e.g., > 30 mg β‑carotene or > 15 mg lutein/zeaxanthin per day).
• Pre‑existing hyperlipidemia or low‑density lipoprotein (LDL) abnormalities.
• Chronic alcohol use or non‑alcoholic fatty liver disease, which reduce hepatic clearance.
• Genetic variants in the SCARB1 or BCMO1 genes that affect carotenoid absorption.

Diagnosis

Diagnosis is primarily clinical, supported by imaging and laboratory testing to rule out other macular disorders.

Clinical eye examination

• Fundoscopy – Direct or indirect ophthalmoscopy reveals a uniform yellow‑orange sheen limited to the macular region.
• Colour fundus photography – Shows characteristic hyper‑yellow coloration compared with surrounding retina.

Imaging

• Optical Coherence Tomography (OCT) – Usually normal retinal layers; may show subtle hyper‑reflective deposits in the outer retina.
• Fundus Autofluorescence (FAF) – May demonstrate increased autofluorescence due to carotenoid fluorescence.
• Fluorescein angiography – Typically normal; helps exclude neovascular or inflammatory maculopathies.

Laboratory tests

• Serum carotenoid levels (β‑carotene, lutein, zeaxanthin) – often > 2 × upper limit of normal.
• Liver function panel – to assess hepatic contribution.
• Lipid profile – to evaluate underlying dyslipidemia.

Differential diagnosis

Conditions that can mimic yellow‑orange maculopathy include:

• Age‑related macular degeneration (drusen can appear yellow).
• Macular telangiectasia.
• Stargardt disease (flecks).
• Drug‑induced retinopathies (e.g., chloroquine).

Treatment Options

There is no pharmacologic “cure” for carotenoid excess; treatment focuses on reducing carotenoid load and monitoring.

Dietary modification

• Reduce intake of high‑carotenoid foods to < 2 cups per day.
• Avoid raw‑food-only diets that heavily rely on carrots, sweet potatoes, or pumpkin.
• Rotate foods: include protein‑rich foods and non‑carotenoid vegetables (broccoli, cauliflower).

Supplement cessation

• Stop all carotenoid supplements immediately.
• If supplementation is needed for a medical reason (e.g., macular degeneration), switch to the lowest effective dose under ophthalmic guidance.

Medical management of underlying disorders

• Treat hepatic disease (e.g., weight loss, alcohol cessation, antiviral therapy for hepatitis).
• Manage dyslipidemia with statins or lifestyle changes.

Monitoring

• Re‑examine the macula after 3–6 months of dietary change; most cases resolve or markedly improve.
• Repeat serum carotenoid levels to confirm decline.

Procedural options

Procedures are rarely required because visual function is usually preserved. In the unlikely event of progressive visual loss, referral to a retinal specialist for possible macular micro‑surgery is considered, but evidence is limited.

Living with Yellow–Orange Maculopathy (Carotenoid Excess)

• Regular eye exams – Schedule follow‑up visits every 6–12 months.
• Balanced nutrition – Follow national dietary guidelines (e.g., USDA MyPlate) rather than extreme “high‑carotenoid” plans.
• Protect against glare – Use polarized sunglasses when outdoors.
• Monitor skin colour – Excess carotenoids can also cause a yellow‑orange tint to the skin (carotenemia); an improvement in skin shade often parallels retinal improvement.
• Stay hydrated – Adequate fluid intake supports hepatic metabolism.
• Educate family members – Since dietary habits are shared, informing relatives can prevent recurrence.

Prevention

• Adhere to recommended daily allowances:
  • β‑Carotene ≤ 6 mg (≈ 3 mg retinol activity equivalents)
  • Lutein + Zeaxanthin ≤ 10 mg combined for general health.
• Read supplement labels carefully; avoid “megadose” products unless prescribed.
• Maintain liver health: limit alcohol, achieve a healthy BMI, and manage diabetes.
• Regular lipid screening if you have a family history of hypercholesterolemia.
• Consult an eye‑care professional before initiating high‑dose eye‑health supplements.

Complications

While most cases are benign, untreated or prolonged carotenoid excess can lead to:

• Persistent visual disturbances – Reduced contrast sensitivity or subtle central blurring.
• Irreversible macular pigment alteration – In rare chronic cases, the macular architecture may be permanently altered, potentially increasing susceptibility to age‑related macular degeneration.
• Systemic carotenemia – Yellow‑orange discoloration of the skin, especially the palms and soles, which can be mistaken for jaundice.

When to Seek Emergency Care

References

• Mayo Clinic. “Carotenemia.” https://www.mayoclinic.org/
• National Eye Institute (NEI). “Macular Pigment and Dietary Carotenoids.” https://nei.nih.gov/
• Cleveland Clinic. “Carotenoid Supplementation and Eye Health.” https://my.clevelandclinic.org/
• World Health Organization. “Nutrition and Eye Health.” https://www.who.int/
• American Academy of Ophthalmology. “Retinal Imaging in Macular Disorders.” https://www.aao.org/