Eye drops play a crucial role in the prevention, relief, and treatment of various eye conditions. Their use should always be guided by healthcare professionals. Self-medication and improper use of eye drops can have serious complications, including irreversible vision damage. When there is any doubt or ocular symptom, medical evaluation is essential to ensure an accurate diagnosis and safe treatment. What are eye drops Eye drops are sterile liquid medications for topical application. They are one of the most common forms of treatment in ophthalmology and are used daily by millions of people to relieve or treat numerous eye symptoms and conditions. Although they may appear to be simple and easily accessible products, many of these medications can cause significant complications when used without medical guidance and in situations for which they are not indicated. Not all eye drops are the same. Their composition and intended use can vary greatly. As with most medications, some eye drops are available over the counter, while others require a medical prescription. Over-the-counter eye drops These eye drops are available without a prescription and are intended for simple and temporary situations , such as: Dry eyes; Mild irritation; Discomfort associated with prolonged screen use. Although generally safe, excessive or prolonged of over-the-counter eye drops may mask more serious problems or even worsen symptoms. Prescription eye drops These include various active ingredients with specific actions , such as: Antibiotics; Anti-inflammatory agents; Corticosteroids; Medications for the treatment of glaucoma. Incorrect use of these medications may have serious consequences , including: Increased intraocular pressure Worsening of infections Corneal damage Permanent vision loss Among prescription eye drops, ophthalmic corticosteroids deserve particular attention. They are highly effective in reducing inflammation and provide rapid symptom relief, which may encourage improper use. Their incorrect use can have particularly serious consequences, such as: Worsening of ocular infections Increased intraocular pressure Contribution to the development of glaucoma Delayed healing of corneal injuries Risks of self-medication in eye care Self-medication with eye drops remains relatively common but is potentially dangerous. The eyes are delicate organs, and small changes can have a major impact on vision. Many ocular problems require a detailed evaluation to be properly treated, which may include: Corneal assessment; Retinal examination; Measurement of intraocular pressure; Evaluation of the internal structures of the eye. Without this proper assessment, there is a risk of incorrectly treating a condition that might otherwise have a simple solution. Warning signs: when to seek urgent medical evaluation An ophthalmologist should be consulted if any of the following symptoms occur: Eye pain; Decreased vision; Sensitivity to light (photophobia); Intense eye redness; Abundant ocular discharge; Eye trauma; Symptoms following recent eye surgery. These signs may indicate conditions that require urgent diagnosis and treatment. Red eye is a symptom, not a diagnosis Eye redness is one of the most common symptoms in ophthalmology, but it does not correspond to a specific disease. It may result from simple situations, but it can also be a sign of serious eye conditions. Therefore, treating only the symptom without medical evaluation may delay the correct diagnosis and compromise the prognosis. The eyes are delicate and irreplaceable organs. Using eye drops correctly is essential to protect vision. If in doubt or in the presence of symptoms, always seek medical advice. Author : Tiago Silva (ophthalmology) Meet the ophthalmology clinial team from Hospital da Luz network. The content published in the Health Guide is intended for the general public and is provided for informational and educational purposes only. It does not replace individual medical assessment, diagnosis, or personalized clinical advice from a qualified healthcare professional. The content is produced or reviewed by physicians and other healthcare professionals at Hospital da Luz and is based on the knowledge available at the time of publication or the most recent update, as indicated at the beginning of each item.
