science

Lipaemia retinalis

Lipaemia retinalis is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lipaemia retinalis rather than just read about it. In short: Lipaemia retinalis (LR) also spelled as Lipemia retinalis is an eye disease caused by high amounts of triglycerides in the blood (hypertriglyceridemia) or Lipoprotein lipase deficiency (chylomicronemia). In this condition the retinal arteries and veins, and occasionally the entire fundus shows creamy-white to salmon-red discoloration.

Key takeaways

Lipaemia retinalis belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Lipaemia retinalis to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lipaemia retinalis from memory before moving on to harder problems.

Reference excerpt

Lipaemia retinalis (LR) also spelled as Lipemia retinalis is an eye disease caused by high amounts of triglycerides in the blood (hypertriglyceridemia) or Lipoprotein lipase deficiency (chylomicronemia). In this condition the retinal arteries and veins, and occasionally the entire fundus shows creamy-white to salmon-red discoloration.

Signs and symptoms In early stage of lipaemia retinalis, creamy-white discoloration of retinal blood vessels occurs and in extreme cases the fundus become salmon red colour. Retinal changes occur in the peripheral vessels, gradually progress to entire fundus. Symptoms are caused by an increase in the level of chylomicron in the retinal circulation. Though visual acuity is not affected, electroretinogram amplitude may be decreased. Since acute increase in triglyceride may be asymptomatic at first, retinal signs of LR are an important clinical sign of hypertriglyceridemia.

Cause Lipaemia retinalis is a retinal disease caused by hypertriglyceridemia or chylomicronemia. Depending on plasma triglyceride level, the retinal arteries, veins or occasionally the entire fundus may show creamy-white to salmon-red discoloration. In primary hyperlipidaemia, LR occurs only in patients with increased chylomicron levels. Lipaemia retinalis occurs commonly with familial hypertriglyceridaemia, and rarely with combined hypertriglyceridaemia. Although serum triglyceride levels above 1000 mg / dL can cause eye symptoms such as xanthoma, xanthelasma and arcus senilis, lipaemia retinalis is most commonly seen when the triglyceride level is above 1500 mg / dL. Changes in fundus are more pronounced when triglyceride levels exceed 2,500 mg / dL.

Grading Vinger and Sachs classified lipaemia retinalis into three grades. Early lipaemia retinalis with creamy white discoloration of peripheral retinal vessels is classified as Grade 1. When the discoloration extends towards optic disc, it is graded as Grade 2 and when retina becomes salmon red it is classified as Grade 3.

Treatment When the serum triglyceride is under control by proper dietary control and or insulin, the changes in the retina and electroretinogram changes return to normal.

Epidemiology According to Brunzell and Bierman, lipaemia retinalis occurs in 23% of patients with chylomicronaemia and they says it may be considered as a rare disease only because of lack of routine fundoscopic examination.

History In 1880, Heyl first described lipaemia retinalis and in 1970 Vinger and Sachs introduced a grading system to describe its stages.

Other animals Increase in serum triglyceride can cause lipaemia retinalis in cats also.

References

Worked examples

Example 1 — a first encounter with Lipaemia retinalis

Start with the simplest possible case. Write down what Lipaemia retinalis claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lipaemia retinalis before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lipaemia retinalis ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lipaemia retinalis

In research: Lipaemia retinalis appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Lipaemia retinalis in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Lipaemia retinalis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Disorders of choroid and retina, Lipid metabolism disorders, Triglycerides, so understanding it makes those chapters shorter.
In everyday life: Look for Lipaemia retinalis outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Lipaemia retinalis” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Lipaemia retinalis in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lipaemia retinalis means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Lipaemia retinalis out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lipaemia retinalis in simple terms?

Why does Lipaemia retinalis matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lipaemia retinalis?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lipaemia retinalis.