Early stages may have no symptoms
In the early stages of diabetic retinopathy, there are often no noticeable symptoms. Vision may appear normal even while changes are developing within the retina.
This makes regular eye examinations essential for early detection.
Blurred vision
Blurred vision is one of the most common symptoms as the condition progresses. This may affect the ability to read, focus on detail or see clearly at different distances.
Fluctuating vision
Vision may vary throughout the day or over time. Individuals may notice periods of clearer vision followed by reduced clarity.
These fluctuations can be related to changes in the retinal environment.
Reduced visual clarity
Objects may appear less sharp or more difficult to focus on. This can affect tasks that require visual precision.
Dark spots or areas in vision
Some individuals may notice dark spots, patches or areas of reduced vision. These changes may vary in size and location.
Difficulty with detailed tasks
Activities such as reading, recognising faces or working with fine detail may become more challenging as visual clarity decreases.
Changes in contrast sensitivity
It may become more difficult to distinguish objects from their background, particularly in low-contrast situations.
Difficulty in low-light conditions
Vision may be less effective in dim lighting or when adjusting between different lighting conditions.
Colour perception changes
Colours may appear less vivid or more difficult to distinguish as retinal function is affected.
Differences in symptoms based on stage
Symptoms can vary depending on whether diabetic retinopathy is in an earlier or more advanced stage.
In non-proliferative diabetic retinopathy (NPDR), symptoms are often mild or absent. When present, they may include subtle blurring, slight fluctuations in vision or reduced clarity. These changes tend to develop gradually and may not significantly affect daily activities initially.
In proliferative diabetic retinopathy (PDR), symptoms are typically more noticeable and may develop more rapidly. Individuals may experience more significant visual disturbance, including increased blurring, dark areas in vision or more pronounced fluctuations. These changes reflect more advanced retinal involvement.
Understanding these differences helps in recognising when changes may indicate progression and require more urgent assessment.
Gradual progression of symptoms
Symptoms typically develop slowly over time rather than appearing suddenly. Because of this gradual progression, changes may not be immediately recognised.
Differences in symptom severity
The severity of symptoms can vary depending on the extent of retinal involvement. Some individuals may have mild visual changes, while others may experience more significant impairment.
Why symptoms may be overlooked
Because early diabetic retinopathy often does not cause symptoms, individuals may not realise that changes are occurring.
This reinforces the importance of regular eye assessments.