{"id":4626,"date":"2023-10-01T16:05:42","date_gmt":"2023-10-01T16:05:42","guid":{"rendered":"https:\/\/clinicaoftalmologicanebro.com\/?p=4626"},"modified":"2023-10-02T06:03:17","modified_gmt":"2023-10-02T06:03:17","slug":"what-is-eyestrain-and-what-are-its-symptoms","status":"publish","type":"post","link":"https:\/\/clinicaoftalmologicanebro.com\/en\/que-es-la-fatiga-visual-y-cuales-son-sus-sintomas\/","title":{"rendered":"What is eyestrain and what are its symptoms?"},"content":{"rendered":"

The visual fatigue <\/strong>is a problem that is on its way to becoming endemic in developed countries, so it is worth analysing why it occurs and learning how to tackle its annoying symptoms.<\/p>\n\n\n\n

What is eyestrain?<\/h2>\n\n\n\n

The eyestrain or eyestrain<\/strong> is not an eye condition per se, but a syndrome or set of bothersome symptoms that affect the eyeball and its environment, as well as the ability to see.<\/p>\n\n\n\n

Specifically, eyestrain or eyestrain and its characteristic symptoms usually manifest themselves when the affected person performs activities that involve focusing on close objects or fixating the eyes on very specific points for long periods of time.<\/p>\n\n\n\n

What causes eyestrain?<\/h2>\n\n\n\n

When we look at something up close, such as a computer screen or a mobile phone, the ciliary muscle contracts and the lens of the eye naturally bends. When this effort to focus on a near point is prolonged, the ciliary muscle does not have a chance to relax. In such cases, it is this uninterrupted effort that causes eyestrain.<\/p>\n\n\n\n

On the other hand, decreased blinking frequency also causes eye fatigue. It occurs not only when we look attentively at a book or a screen, but also in other circumstances. One of the most common is driving a car: it has been proven that attention while driving leads to a decrease in the frequency with which the driver opens and closes his eyelids.<\/p>\n\n\n\n

And why does decreased blinking frequency lead to eye fatigue?<\/strong> Because blinking is the natural mechanism for distributing tears over the corneal surface. This smoothes the surface of the cornea, making vision noticeably sharper.<\/p>\n\n\n\n

When the frequency of blinking is reduced, the surface of the eye is more exposed to air and therefore to tear evaporation. This creates discontinuities in the tear film and causes irregularity of the corneal surface, leading to blurring, dryness and irritation.<\/p>\n\n\n\n

In addition, when the affected person's vision is blurred, he or she involuntarily increases eye strain, which worsens the symptoms of eyestrain. In short, it is a case of the fish that bites its own tail.<\/p>\n\n\n\n

Symptoms of eyestrain<\/h2>\n\n\n\n

People suffering from eyestrain experience some or all of the symptoms listed below:<\/p>\n\n\n\n