Why your eyes feel gritty after hours at the computer

Experiencing a burning or gritty sensation in the eyes after spending extended periods in front of a computer screen may indicate more than just tiredness, according to ophthalmologist Professor Sergei Trofanov. This symptom could point to underlying issues related to eye moisture and protection, which are often associated with diminished tear production or increased evaporation. These conditions can be exacerbated by prolonged exposure to digital devices.

The tear film, essential for maintaining the eye's surface, plays a vital role in protection and hydration. When its composition is compromised or its efficacy diminishes, individuals may encounter burning, irritation, and discomfort. Professor Trofanov explained that dry eye syndrome can arise from insufficient tear production by the lacrimal glands, potentially linked to systemic diseases like rheumatoid arthritis or nervous system disorders that affect tear secretion.

The second category is associated with malfunctioning meibomian glands in the eyelids, responsible for secreting oils that slow down tear evaporation. When these glands fail to function correctly, their secretions thicken, making it difficult to release, which contributes to tear film breakdown and accelerated moisture loss.

Hormonal fluctuations and other variables can influence the efficiency of these glands. Professor Trofanov pointed out that both these types of dry eye can coexist in the same individual. Although excessive computer use is not always the primary cause, it can exacerbate symptoms. He noted that continuous focus on a computer screen diminishes blink frequency, which slows the renewal of the tear film and accelerates evaporation.

Screen time alone does not necessarily result in dry eye, as other predisposing factors may exist. Treatment for dry eye is contingent on its severity and root cause. It may initially involve the use of moisturizing eye drops, while more severe or specific cases may necessitate additional therapies. For instances of meibomian gland dysfunction, treatment might entail warming the eyelids to soften and release the oils.

This method typically involves temperatures around 42 degrees Celsius, but such procedures should only be conducted under medical supervision to prevent any harm to the eye or surrounding skin.

Professor Trofanov cautioned against the indiscriminate use of eye drops without a medical examination, as the ingredients and effects of these products can vary. The appropriate treatment hinges on accurately identifying the underlying cause of the symptoms. If burning, dryness, or redness continue unabated, it is advised to consult an ophthalmologist for a thorough diagnosis and suitable treatment plan.