Quick version
Age-related macular degeneration (AMD) affects central vision and occurs in two forms: a slowly progressive dry form and an acute wet form. Common early signs include blurring, increased light sensitivity and straight lines appearing wavy – the latter requiring immediate eye care. The risk increases with age and is influenced by heredity, but quitting smoking and adopting healthy lifestyle habits can help protect your vision.
It often starts in everyday life. The text on your mobile phone feels unusually blurry, straight tile joints look a little crooked or a face from a distance becomes harder to recognize. Age-related changes in the macula can develop slowly and discreetly, but sometimes also quickly. That is why the first symptoms are worth knowing.
Age-related changes in the macula (AMD) – first symptoms
Age-related changes in the macula, also called AMD after the English age-related macular degeneration, affect the part of the retina that provides sharp vision straight ahead. The macula is needed when you read, sew, cook, drive or recognize faces. The disease primarily affects central vision, while peripheral vision is usually preserved.
AMD is divided into dry and wet forms. The dry form is the most common and usually develops gradually over years. The wet form is less common but can impair vision rapidly, sometimes within days to weeks, and needs to be assessed urgently.
First symptoms of age-related changes in the macula
The first symptoms of age-related changes in the macula are not always clear. Early dry AMD often causes no noticeable symptoms at all. This means that a person can have changes in the retina without themselves noticing that their vision has worsened.
When symptoms do appear, they are often small changes in central vision. For example, you may need brighter light to read, notice that letters are blending together, or notice that contrast has become worse. Some people experience that colors feel less clear or that it takes longer for the eyes to adjust in low light.
Common early symptoms can include:
- blurred or foggy vision straight ahead
- difficulty reading small text
- problems recognizing faces
- poorer vision in dim light
- straight lines that start to look wavy or crooked
The last symptom is especially important. If straight lines suddenly look curved, it can be a warning sign of wet AMD, which requires a quick eye assessment.
How to tell the difference between dry and wet AMD
Dry AMD often creeps in. Vision may become slightly less sharp, especially when reading or doing detailed work. Since the change often starts in one eye, the other eye can compensate, which means that the symptoms are detected late. This is a common explanation for why people say that their vision “still works pretty well” even though the disease is already present.
Wet AMD behaves differently. Fragile, newly formed blood vessels form under the macula, which can leak fluid or blood. Then vision can deteriorate noticeably in a short time, and central parts of the field of vision can become blurry, distorted or have a dark or empty spot.
A concrete example is that you suddenly see a door frame as crooked even though it is straight, or that the middle of a newspaper row is missing. Another is that a face looks clear at the edge but blurry in the middle of your vision. This type of symptom should not be left at home.
Why do symptoms come on so insidiously?
The macula is a small area, but it is responsible for the most detailed vision. When changes occur there, what you are looking at directly is primarily affected. Therefore, it is typical that you can still orient yourself in the room but have problems with reading, manual work and face recognition.
In early and moderate dry AMD, so-called drusen, small deposits under the retina, are often visible. They are not felt and do not hurt, but they can be a sign that the retina is aging in a way that increases the risk of later vision loss. In the beginning, it is sometimes not enough to “try harder” or change glasses, since the problem is in the retina and not in the refraction of the eye.
AMD does not hurt. The absence of pain does not mean that the condition is harmless. It is precisely the combination of a stealthy start, no pain and the fact that a healthy eye can compensate that many people seek treatment late.
When should you seek care for the symptoms?
Seek treatment quickly if your vision changes suddenly, especially if straight lines become crooked or if you get a new blurry, dark or empty spot in the middle of your field of vision. Suspected wet AMD should be assessed urgently, as treatment can slow vision loss if started early. People with suspected late-stage wet AMD are referred very quickly.
For more insidious problems, it is still wise to book an appointment with an optician or eye care. The examination usually includes a vision check, a look at the fundus and sometimes pupil-dilating drops. OCT is often also done, a scan that takes cross-sectional images of the retina and helps the doctor see fluid, thinning or other changes in the macula.
If you are over 60 and notice that the lighting needs to be brighter than before to be able to read, or that you often feel that new glasses “don't really help”, it is reasonable to have your vision assessed. The same applies if you have a family history of AMD or smoke.
Risk factors and what you can influence
Age is the most important risk factor. AMD is uncommon before the age of 65 and becomes more common with increasing age. Heredity also plays a role, and the risk increases if close relatives have had the disease.
Smoking is the clearest modifiable risk factor. It increases the risk of developing AMD and can also contribute to deterioration over time. Also high blood pressure, cardiovascular disease, obesity and elevated cholesterol levels have been linked to increased risk or progression.
What you can do yourself is primarily about reducing the strain on the vessels and retina:
- quit smoking
- treat high blood pressure and other cardiovascular risks
- aim for a healthy weight and regular physical activity
- eat a diet with lots of vegetables and preferably fish
For people with certain stages of moderate AMD, specific vitamins and minerals can reduce the risk of progression, but such supplements should be used after assessment by an ophthalmologist or optician and are not a treatment for everyone with early AMD. changes.
AMD reminds us of an important point: vision changes are not always just related to age in general, but can be a sign of disease in the retina. When small everyday signals are taken seriously, the chance of detecting changes increases before they have a more significant impact on life.
