Sudden, painless vision loss as a sign of an ophthalmic emergency
01/09/2026
From the age of 40–45, many people begin to notice that reading at close range requires more effort. Text appears less sharp, reading distance increases almost automatically, and everyday tasks such as checking a mobile phone or reading a book may become more uncomfortable.
This change is usually due to presbyopia, a natural process associated with the ageing of the eye. Understanding why this happens and what options are available to adapt to it makes it easier to deal with presbyopia naturally and maintain comfortable reading in everyday life.
Presbyopia usually develops gradually. At first, it becomes noticeable in specific situations, but over time it can affect everyday reading.
|
Symptom |
What happens |
|
Need to hold text further away |
The eye is unable to focus properly at close range |
|
Blurred letters |
The crystalline lens does not adjust quickly enough |
|
Greater need for light |
Visual contrast decreases with age |
|
Visual fatigue |
The eyes make an additional effort to focus |
|
Occasional headache |
A consequence of prolonged visual effort |
These signs usually appear between the ages of 40 and 50 and progress gradually.
Many people first notice presbyopia during very common everyday activities:
In these situations, the brain attempts to compensate for the loss of focusing ability by increasing the reading distance or straining the eyes.
Although presbyopia is a natural process, certain habits can help improve visual comfort when reading.
Some useful recommendations include:
|
Strategy |
Recommended frequency |
|
Adjust font size |
Whenever reading on devices |
|
Improve lighting |
During any reading activity |
|
Visual breaks |
Approximately every 20 minutes |
|
Eye examination |
Every 1–2 years |
These small changes can make a significant difference to visual comfort.
When presbyopia begins to interfere with everyday activities, there are different optical and medical solutions available to improve near vision.
Glasses remain the most common solution and can be adapted to different needs:
Multifocal contact lenses are also available, allowing near and distance vision to be corrected simultaneously.
In some cases, presbyopia can be corrected through surgical procedures that replace the crystalline lens with multifocal or trifocal intraocular lenses, which can improve vision at different distances.
At Barraquer, each patient receives a personalised assessment to determine the most suitable option according to their age, lifestyle and visual needs.
Although presbyopia is a natural process, it is advisable to have an eye examination when the first symptoms appear.
A visual assessment makes it possible to:
At Barraquer, we understand that every patient has different visual needs, particularly when reading is an essential part of their daily life.
Presbyopia is a natural consequence of visual ageing, but it does not have to limit the ability to read or enjoy close-up activities.
Understanding how vision changes with age makes it possible to adopt solutions that restore comfort and quality of vision in everyday life.
At Barraquer, we combine medical expertise, advanced technology and personalised care to help each patient find the best solution for their vision.
Dr Milan Pešić, ophthalmologist at the Barraquer Ophthalmology Centre
Todos sufriremos la aparición de la presbicia o vista cansada a partir de los 40 años. Aunque su progresión suele resultar incómoda, actualmente disponemos de un amplio abanico terapéutico para que el paciente pueda afrontar esta etapa sin renunciar a su calidad de vida. ¿Qué es la presbicia? ¿Cómo es su tratamiento? ¿De verdad vale la pena operarse? Despejamos todas las dudas.