Eye pressure: The key role in cataracts (glaucoma)

The intraocular pressure (IOP) is the central measured value in the fight against cataracts (glaucoma). A permanently too high IODINE level is the main risk factor for this treacherous eye disease. Without timely diagnosis and treatment, cataracts can lead to steady deterioration and irreversible loss of vision.

We will show you why precise measurement is so crucial in glaucoma diagnostics and which modern therapies help to protect your optic nerve.

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Why is intraocular pressure so important for glaucoma?

Intraocular pressure is essential for the health of your eyes. It represents the necessary balance between the production and the outflow of the so-called aqueous humour. An increased pressure is created when this delicate balance is disturbed. 

If the IODINE remains untreated, it will damage the optic nerve over time. This leads to an increasing restriction of your field of vision, the area of vision that you can perceive without eye movement. About two in 100 people over the age of 40 are affected by glaucoma.

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Intraocular pressure normal values: What does the measurement result mean for glaucoma?

Knowing your measured intraocular pressure (IOP) is just the first step. Glaucoma prevention does not stop here: a measurement result must always be considered in the context of individual optic nerve health. 

Only the combination of the IOP value, the corneal thickness measurement and the examination of the optic nerve shows whether there is a need for action. We evaluate the results precisely to preserve your vision in the long term.

Standard reference values in mmHg

From a medical point of view, the normal intraocular pressure is usually between 10 and 21 mmHg (millimetres of mercury). Values above 21 mmHg may already indicate an increased risk. However, this range is only a statistical average that needs to be considered individually. 

For glaucoma prevention, it is important to know that a value in the normal range does not exclude a cataract. Therefore, the examination of the ophthalmologist is essential to detect damage to the optic nerve at an early stage.

Normal pressure glaucoma: when iodine levels are deceptive

The so-called normal pressure glaucoma is treacherous, as the intraocular pressure here is in the statistical normal range (below 21 mmHg). Nevertheless, the optic nerve is irreversibly damaged. 

This makes it clear that IODINE is not the only indicator of glaucoma. That is why we always supplement the measurement with advanced imaging methods. Annual glaucoma screening from the age of 40 is so important to detect and treat this form of the disease at an early stage.

Comparison of intraocular pressure values – What is normal?

IOD value (mmHg)Medical classificationSignificance for glaucoma risk
10–21 mmHgStatistical normal rangeDoes not rule out glaucoma (normal pressure glaucoma). Annual pension from 40 is recommended
21 mmHgIncreased intraocular pressureSignificantly increased risk of glaucoma. Requires prompt, detailed diagnostics, such as OCT and visual field measurement.
40 mmHgVery high to massively increased pressureAcute danger of a glaucoma attack requiring immediate treatment.
Comparison of intraocular pressure values for cataracts

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High intraocular pressure: diagnosis, danger and need for action

A diagnosed high intraocular pressure requires quick action. This is crucial to stop the progressive damage to the optic nerve. We detect the danger at an early stage through state-of-the-art diagnostics. 

The risk of vision loss is real, because glaucoma is often only noticed in advanced stages

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The risk of an acute glaucoma attack (emergency)

An acute glaucoma attack is an ophthalmological emergency. It occurs when the angle of the chamber is suddenly blocked and the IODINE rises abruptly and massively. Symptoms include severe eye pain, nausea, and rapid visual deterioration. 

If you notice these symptoms, please seek emergency ophthalmological care immediately.

The danger of losing vision too quickly

An untreated or too high IODINE leads to a steady damage of the retinal nerve fiber layer (RNFL) and the optic nerve. The resulting loss of visual field is often noticed late. 

This is what is actually dangerous about the cataract: it progresses unnoticed. Our comprehensive diagnostics will protect you from this loss.

Treatment of IOP: Lowering to protect the optic nerve

If the intraocular pressure is too high, a targeted lowering is the only way to relieve the optic nerve. The choice of treatment always depends on your individual needs.

Drug therapy: Glaucoma drops

In most cases, treatment begins with special glaucoma drops. These lower intraocular pressure by either reducing the production of aqueous humor or improving drainage. The drops must be used lifelong and disciplined.

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SLT laser: The gentle pressure reduction (selective laser trabeculoplasty)

SLT (Selective Laser Trabeculoplasty) is an effective and gentle laser treatment. Here, the trabecular structure, the outflow area of the aqueous humor, is specifically treated with a laser.

This improves the drainage of aqueous humor and thus lowers the IODINE level for a long time. SLT can often reduce or even replace drop therapy.

Surgical procedures: trabeculectomy and pressure-lowering surgery options

If the IODINE cannot be sufficiently lowered by drops and lasers, we offer various surgical procedures. Trabeculectomy creates a new drainage path for the aqueous humor (drainage cushion) during a glaucoma operation

In addition, cataract surgery can reduce pressure by removing the body’s own lens. This can be an effective option in combined cases.

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Fortunately, I was able to undergo a laser treatment, because the result is impressive. The procedure was short and painless and the treatment very pleasant.

Eye pressure and cataracts: important controls

The intraocular pressure is a dynamic value that changes over the course of the day. A single measurement is therefore not sufficient. In order to optimally protect your optic nerve, regular and comprehensive preventive care is crucial.

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Oct (optic nerve) and visual field measurement as a supplement

Optical coherence tomography (OCT) provides high-resolution images of the optic nerve head and the retina. Glaucoma Oct allows for the early detection of changes. It summarizes the structure of the optic nerve head and the retina. Field of view measurement (perimetry) tests your field of view for limitations. This combination of IOP measurement, OCT and visual field is indispensable for a reliable diagnosis.

Your individual follow-up plan (set target values)

After diagnosis, we determine your individual target pressure together. This depends on the degree of optic nerve damage and other risk factors. Regular checks (annual glaucoma screening from 40) are crucial to check whether the target pressure is reached. Your personal aftercare plan will help you to actively contribute to the preservation of your eyesight.

Contributions on the topic of cataracts

Frequently asked questions about intraocular pressure in cataracts (glaucoma)

If glaucoma is diagnosed or suspected, annual checks of intraocular pressure are strongly recommended. In addition, it is important to supplement the measurements with a glaucoma Oct and the visual field measurement. Only these regular, comprehensive preventive examinations protect the optic nerve from progressive damage. Do you want to set your control plan? Book your non-binding aptitude test now

Lifestyle can slightly affect intraocular pressure. Factors such as excessive coffee consumption in certain sports (yoga with head-down postures) and sleep apnea can temporarily increase IODINE. However, it is important to note that a healthy lifestyle does not replace regular monitoring and treatment by the ophthalmologist. Talk to us about adjustments to your everyday life.

No, intraocular pressure is the most important risk factor, but not the only diagnosis in cataracts. The actual glaucoma is only present when there is demonstrable damage to the optic nerve and a restriction of the visual field. Therefore, in addition to the IODINE, we also measure the optic nerve structure using OCT and carry out a visual field measurement. Find out more about the detailed diagnostics here.

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