Main
- Glaucoma damages the optic nerve unnoticed: peripheral vision narrows gradually, while central vision is preserved, so there are no complaints for a long time.
- Examination includes three basic procedures: measurement of intraocular pressure, examination of the fundus and visual field testing.
- The risk is higher with heredity, age, diabetes and hypertension: this should be reported to the ophthalmologist at the appointment.
- Urgent help is needed for sharp pain in the eye, rainbow-coloured halos with nausea, sudden deterioration of vision.
- Follow-up with an ophthalmologist is lifelong: the frequency of visits depends on age, heredity and concomitant diseases.
What is glaucoma
Glaucoma is a group of eye diseases in which the optic nerve is gradually damaged, most often due to increased intraocular pressure. Without treatment, this can lead to irreversible deterioration of vision, so it is important to see an ophthalmologist in time.
What happens in the body
Fluid is constantly produced inside the eye, which nourishes its tissues and should drain freely through the natural drainage pathways. When this outflow slows down for some reason, the fluid accumulates, and the pressure inside the eyeball begins to rise. Against this background, the optic nerve, which transmits the image to the brain, is gradually compressed and loses its fibres. At first, a person may not notice anything, because peripheral vision is affected imperceptibly and without pain. Over time, the field of vision narrows, and the world around seems to shrink into a narrow tunnel. In some cases, the pressure remains within the normal range, but the nerve is still damaged due to insufficient blood supply. Such changes can only be noticed at an early stage during an examination by an ophthalmologist, so one should not wait for obvious complaints.
What causes it to develop
- Increased intraocular pressure: fluid accumulates faster than it can drain, and this gradually compresses the fibres of the optic nerve.
- Hereditary predisposition: if close relatives have had this condition, the risk is noticeably higher, and this should be mentioned to the doctor at the appointment.
- Age-related changes in the eye: over the years, the drainage structures work worse, so the outflow of fluid naturally slows down.
- Concomitant diseases: diabetes mellitus and hypertension affect the blood vessels, which is why the optic nerve receives less blood supply.
- Eye injuries: a blow or damage can disrupt the normal outflow of fluid and trigger changes in the tissues.
- Long-term use of certain medicines: some agents can increase the pressure inside the eye, so it is important to tell the doctor about them.
Who experiences this more often
Most often, this condition is detected in older people, and with each decade of life the probability gradually increases. Close relatives of a person with an already established diagnosis also have a higher risk, so family history matters here. People with diabetes mellitus and persistently high blood pressure are in the attention group, because their blood vessels are affected first. Past eye injuries and long-term use of certain medicines also increase the likelihood of changes. It can be difficult to notice the onset, because vision remains familiar for a long time, and the narrowing of the visual fields comes imperceptibly. That is why ophthalmologists advise checking the eyes regularly, even when there are no complaints. Such an examination helps to see changes in time and preserve vision for years.
What symptoms can there be?
Glaucoma often develops unnoticed, and a person may not suspect a problem for a long time. Understanding which signs require a routine visit to an ophthalmologist and which require immediate help is important for preserving vision.
How it is noticed at the very beginning
In the early stages, glaucoma often proceeds without noticeable symptoms, so a person may not suspect the disease for years. The first changes affect peripheral vision: visual fields gradually narrow, and those around notice that the person sees worse to the sides. The patient themselves often attributes blurriness or fog before the eyes to fatigue after working at a computer or lack of sleep. Rainbow-coloured circles when looking at a light source are also perceived as a temporary phenomenon and do not cause alarm. Heaviness or pain in the eye, redness are explained by overwork and a visit to a specialist is postponed. Because of this attitude to symptoms, the disease is detected at a later stage, when visual functions are already persistently impaired. Regular eye checks with an ophthalmologist help to notice narrowing of the fields earlier than it becomes obvious to the person themselves.
Signs that occur most often
- Gradual narrowing of visual fields: a person stops noticing objects to the side, although central vision is preserved, and this is an alarming signal.
- Deterioration of peripheral vision: the view at the edges becomes narrower, making it easy to bump into an object or not see something approaching.
- Blurriness or fog before the eyes: the image loses sharpness, and this condition does not pass after rest, which distinguishes it from fatigue.
- Rainbow-coloured circles when looking at light: coloured halos appear around the source, and this is a noticeable reason to have your vision checked.
- Pain or heaviness in the eye: the unpleasant sensation persists and intensifies rather than disappearing on its own.
- Redness of the eye: redness without an obvious cause combined with other signs requires a specialist's attention.
When to seek help urgently
Examinations and tests
Examination for glaucoma is aimed at measuring intraocular pressure, assessing the condition of the optic nerve and checking visual fields. Additional methods help the doctor see how fluid drains inside the eye and what condition its structures are in.
How the examination begins
The examination begins with measuring intraocular pressure, because this is the indicator that first points to possible disturbances in fluid outflow. The doctor then examines the fundus to assess the condition of the optic nerve and notice changes in its fibres. Checking visual fields shows whether areas of peripheral vision have been preserved or whether part of them has already been lost. These three procedures together give an overall picture and help distinguish glaucoma from other conditions of the eye. If the data are insufficient, the doctor may prescribe additional investigations to assess fluid outflow and the structures of the eye. Optical coherence tomography makes it possible to measure the thickness of the nerve fibres and see losses where a routine examination does not notice them. Gonioscopy shows the angle of the anterior chamber, through which fluid drains, and helps understand the cause of the pressure increase. It is worth collecting all previous reports and images in advance so that the doctor can compare the results over time.
What is prescribed and what it shows
What is worth preparing for the appointment
- Reports from the ophthalmologist: take all previous reports so that the doctor can see how the pressure and vision readings have changed over time.
- Results of previous measurements: records of intraocular pressure and visual fields help compare the current condition with previous data.
- Images and tomograms: previous images of the optic nerve make it possible to notice even small changes that are imperceptible during a single examination.
- A list of all medications being taken: some medicines affect the pressure and the condition of the eye, so it is important to tell the doctor about them.
- Records of your own observations: note when complaints about vision appeared, so that the doctor can more accurately assess how long the changes have been present.
- Questions for the doctor: formulate in advance what you want to clarify about your condition, so that the appointment is more focused and useful.
Which doctor should I see?
This section explains which doctor you are referred to for glaucoma, what happens at the first appointment and what areas of care make up the treatment.
Which specialist manages this condition
Glaucoma is managed by an ophthalmologist, and it is to them that you are referred if this condition is suspected. The doctor examines the fundus and assesses the condition of the optic nerve, and also checks the visual field. They measure the intraocular pressure and compare the values obtained with the norm. If there is no specialist nearby, you can start with an appointment with a general practitioner at your place of residence. The general practitioner will assess your general condition and advise where to go next. With glaucoma, it is important not to postpone the visit, because damage to the optic nerve increases over time. Make an appointment with an ophthalmologist as soon as you have the opportunity.
What the treatment consists of
- Selection of therapy by the doctor: the ophthalmologist selects treatment individually in order to lower the intraocular pressure and protect the optic nerve.
- Laser treatment: used when the outflow of fluid inside the eye needs to be improved; the method is chosen by the doctor according to the condition of the eye.
- Surgery when indicated: surgical intervention is considered if other areas of care do not give the required result.
- Regular follow-up with an ophthalmologist: repeat examinations allow the disease to be controlled and changes to be noticed in time, so visits must not be missed.
What depends on the patient themselves
The regularity of follow-up with an ophthalmologist directly affects how long vision is preserved in glaucoma. If visits are missed, changes inside the eye remain unnoticed, and damage to the optic nerve continues to increase. The patient themselves makes sure to come for examinations at the time appointed by the doctor, and does not postpone them without reason. They also inform the ophthalmologist about all changes in how they feel and about the difficulties that arise when following the recommendations. When a person honestly tells about their condition, the doctor can adjust the care in time. A missed appointment cannot be replaced either by independent attempts to figure things out or by the advice of acquaintances. Agree with yourself on a regular schedule of visits and stick to it.
What helps prevent an exacerbation?
Glaucoma cannot be completely prevented, but its progression can be slowed and vision preserved with timely monitoring. Part of the work lies with the person themselves: everyday habits, monitoring of indicators and regular visits to an ophthalmologist.
What to change in habits
Everyday habits affect the course of glaucoma, because some of them raise intraocular pressure and create extra strain on the optic nerve. Sharp bending of the head downwards, lifting heavy objects and prolonged straining with breath-holding increase blood flow to the head and change the pressure in the eye. Sleeping face down on a pillow and tight collars compress the neck vessels and make fluid outflow more difficult. Coffee and strong tea in large quantities can cause a brief rise in pressure inside the eye. Protecting the eyes from injuries at work and at home reduces the risk of a sharp deterioration. Giving up smoking is beneficial, because it impairs the blood supply to the optic nerve. If a person is receiving prescribed treatment, habits should be changed gradually and this should be discussed with the doctor.
What should be kept under control
- Intraocular pressure: it is measured at an appointment with an ophthalmologist, because a persistent rise unnoticed destroys the fibres of the optic nerve.
- Condition of the optic nerve: the doctor examines it with a dilated pupil in order to notice changes earlier than complaints appear.
- Visual fields: they are checked using a special method, because a person notices loss of areas of the visual field only at a late stage.
- Concomitant diseases: diabetes mellitus, high blood pressure and vascular disorders require treatment, otherwise they accelerate damage to the eye.
- Following prescriptions: regularly carrying out the doctor's recommendations at home helps keep the condition stable between visits.
- Observation diary: notes about how one feels and noticed changes help the doctor assess more accurately how the condition is progressing.
How often to see the doctor
Regular examinations by an ophthalmologist are needed even when one feels well, because glaucoma progresses for a long time without noticeable signs. People at risk are advised to have their intraocular pressure and the condition of the optic nerve checked at routine appointments. The frequency of visits is determined by the doctor taking into account age, heredity and concomitant diseases. Between examinations it is important to continue doing everything that is recommended, without missing what has been prescribed. If new complaints about vision appear, the visit is not postponed until the next routine date. Missed check-ups lead to changes being found late, when lost vision can no longer be restored. Calm and consistent monitoring helps preserve vision for years.
What is worth remembering
Glaucoma remains a condition in which vision is lost imperceptibly and irreversibly, and it cannot be fully restored. Therefore, what matters decisively is not the moment when complaints appear, but timely seeking help and constant monitoring.
Key conclusions
Glaucoma is not a one-off problem, but a condition that requires observation throughout life, even when nothing is troubling you. Vision loss in glaucoma occurs gradually and affects the peripheral areas first, so a person does not notice the changes for a long time. Only a doctor can notice these changes during an examination, not the patient themselves based on their own sensations. That is precisely why one should not postpone a visit to a specialist if suspicions or risk factors have appeared. Regular check-ups allow progression to be noticed in time and monitoring to be adjusted. If examinations are skipped, the changes may go too far, and it will no longer be possible to restore the lost vision. Glaucoma does not prevent you from living a full life if you keep the situation under control and do not neglect the doctor's recommendations. The support in coping is a calm attitude to the diagnosis and a readiness to follow the prescribed monitoring.
