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Published on: May 04, 2022
3 minute read
By: Second Medic Expert

Glaucoma Causes, Symptoms, Diagnosis & Treatment

Glaucoma is a group of diseases that damage the eye's optic nerve. The optic nerve carries information from the eye to the brain. Glaucoma can cause vision loss and blindness. It is one of the leading causes of blindness in the world. There are no early warning signs of glaucoma. It may take years for vision loss to occur. The only way to prevent blindness from glaucoma is to get regular eye exams and treat it early.

Glaucoma is diagnosed with a comprehensive eye exam that includes a test for your visual field, which measures your side vision. Treatment for glaucoma depends on the type and severity of disease. Glaucoma is a condition that causes damage to the optic nerve. This damage results in a gradual loss of vision, typically leading to blindness. While the cause of glaucoma is not completely understood, it is known that the pressure within the eye (intraocular pressure) plays a role in its development.

High intraocular pressure damages the optic nerve by causing fluid to build up and pushing against the optic nerve fibers. The high pressure can also damage the tiny blood vessels at the back of the eye (retina), which can lead to vision loss. Glaucoma can be diagnosed through a comprehensive dilated eye exam, which includes an evaluation of your visual field and measurement of your intraocular pressure. Glaucoma is a group of eye diseases that damage the optic nerve. It can lead to blindness. The most common type is primary open-angle glaucoma. Angle closure glaucoma, in which the angle between the iris and cornea closes up, is another type. Most people with glaucoma have no early symptoms. If you do have symptoms, they may include blurred vision, halos around lights, eye pain or redness, headaches, and nausea. Often by the time these symptoms develop it is too late for treatment to save vision.

Glaucoma can cause permanent vision loss and blindness. Glaucoma often has no early warning signs, so it's important to get regular eye exams. The main types of glaucoma are open-angle glaucoma and angle-closure glaucoma. Open-angle glaucoma is the most common type of glaucoma. It develops slowly over many years and usually has no symptoms in the early stages. Angle-closure glaucoma is a less common type of glaucoma that can cause a sudden increase in eye pressure.

Glaucoma is a group of eye diseases that can lead to vision loss and blindness. It is caused by damage to the optic nerve. The optic nerve is a bundle of nerve fibers that connects the eye to the brain. The most common type of glaucoma is open-angle glaucoma, which is not caused by an injury or an infection. Open-angle glaucoma develops slowly over time. The other main type of glaucoma is angle-closure glaucoma, which can develop quickly and cause a sudden increase in pressure inside the eye. This pressure can damage the optic nerve and lead to vision loss and blindness

Glaucoma is a group of diseases that damage the eye’s optic nerve. The optic nerve carries visual images from the eye to the brain. Most people with glaucoma don’t know they have it because there are usually no symptoms in the early stages. Vision loss can occur gradually and may not be noticed until significant damage has occurred. There are several types of glaucoma, but the most common type is open-angle glaucoma. Treatment for glaucoma depends on the type and severity of the disease. Options include eyedrops, laser therapy, or surgery.

Glaucoma is caused by damage to the optic nerve, which transmits images from the eye to the brain. Most people with glaucoma don't notice any early symptoms. That's why it's important for people at risk for glaucoma—such as those with a family history of the disease or African Americans over age 40—to get regular eye exams. The only way to prevent vision loss from glaucoma is to diagnose it early and start treatment immediately. Treatment may include prescription eye drops or surgery.

Glaucoma is the second leading cause of blindness in the world. It is a silent thief because often there are no symptoms until significant vision damage has occurred. Most people with glaucoma don't know they have it until they have lost some vision. Vision loss from glaucoma can be gradual or sudden, but it almost always occurs over time. Early in the disease, you may not notice any changes at all in your vision.

Glaucoma can cause vision loss and blindness. The damage is usually due to an increase in pressure in the eye, which is called intraocular pressure (IOP). Most people with glaucoma don't have any symptoms until significant damage has occurred. Symptoms may include a gradual loss of peripheral vision, difficulty seeing at night, a change in pupil size or color, and red eyes.

If you have any of these symptoms, see an ophthalmologist as soon as possible for diagnosis and treatment. Untreated glaucoma can lead to permanent vision loss within a few years.

Glaucoma is a condition in which the optic nerve is damaged, leading to vision loss. It's often caused by an increase in pressure within the eye, called intraocular pressure (IOP). Some common symptoms of glaucoma include: a feeling of pressure in the eyes, blurred vision, and seeing halos around lights. Glaucoma can be diagnosed with a comprehensive eye exam that includes measuring IOP and checking for signs of optic nerve damage. Treatment for glaucoma depends on the severity of the condition and may include medication to reduce IOP, laser treatment, or surgery. Early diagnosis and treatment are essential to preserving vision.

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Asthma Symptoms in Adults: Early Signs, Triggers, and When to Seek Care

Asthma is often perceived as a childhood condition, but a significant number of cases develop or persist into adulthood. In India, adult asthma is increasingly recognised due to rising air pollution, occupational exposure and lifestyle-related risk factors. Unfortunately, asthma symptoms in adults are frequently misdiagnosed as recurrent infections, allergies or age-related breathlessness, leading to delayed treatment.

Understanding adult asthma symptoms is critical for early diagnosis, effective control and prevention of severe attacks.

What Is Asthma?

Asthma is a chronic inflammatory disease of the airways. In asthma, the airways become:

inflamed
narrow
overly sensitive to triggers

This leads to difficulty in breathing, especially during exposure to specific stimuli.

Why Adult Asthma Is Often Missed

Adult asthma symptoms may:

appear gradually
vary in severity
mimic common respiratory conditions

According to Indian Council of Medical Research and WHO data, many adults remain undiagnosed for years, increasing the risk of complications.

Common Asthma Symptoms in Adults

Wheezing

A high-pitched whistling sound while breathing, especially during exhalation, is a classic asthma sign.

Shortness of Breath

Adults with asthma often feel:

breathless during routine activities
difficulty taking deep breaths

This may worsen at night or early morning.

Chest Tightness

Many describe a sensation of pressure or tightness in the chest, which can be mistaken for heart-related issues.

Chronic Cough

A persistent cough, especially:

at night
early morning
after exercise

is a common but overlooked asthma symptom.

Symptoms That Worsen With Triggers

Asthma symptoms often intensify after exposure to specific triggers.

Air Pollution and Smoke

Urban pollution, vehicle emissions and indoor smoke significantly worsen asthma symptoms in adults.

Allergens

Dust mites, pollen, mould and pet dander are common triggers.

Respiratory Infections

Viral infections can trigger asthma flare-ups or reveal undiagnosed asthma.

Physical Activity

Exercise-induced asthma causes breathlessness and wheezing during or after physical exertion.

Weather Changes

Cold air, humidity and sudden temperature changes can aggravate symptoms.

Adult-Onset Asthma

Adult-onset asthma differs from childhood asthma.

Characteristics include:

onset after age 20–30
less association with childhood allergies
more persistent symptoms
higher likelihood of severe disease

Occupational exposure and hormonal changes contribute to adult-onset asthma.

Risk Factors for Asthma in Adults

Several factors increase asthma risk:

long-term exposure to pollution
smoking or passive smoking
occupational chemicals or dust
obesity
family history of asthma
chronic sinusitis or allergies

Women may experience asthma onset or worsening during hormonal changes.

When Asthma Symptoms Become Serious

Seek immediate medical attention if experiencing:

severe breathlessness
difficulty speaking in full sentences
bluish lips or fingertips
rapid worsening of symptoms
poor response to usual inhalers

These signs indicate a potentially life-threatening asthma attack.

How Adult Asthma Is Diagnosed

Diagnosis includes:

detailed symptom history
physical examination
lung function tests (spirometry)
response to bronchodilators

Early diagnosis improves long-term outcomes.

Impact of Untreated Asthma

Untreated asthma can lead to:

frequent attacks
reduced lung function
sleep disturbances
missed workdays
reduced quality of life

According to Lancet respiratory studies, uncontrolled asthma increases hospitalisation risk.

Managing Asthma Symptoms in Adults

Effective asthma management focuses on:

identifying and avoiding triggers
using prescribed inhalers correctly
monitoring symptoms regularly
maintaining follow-up care

Asthma action plans help patients recognise worsening symptoms early.

Role of Preventive Healthcare

Preventive healthcare helps:

detect asthma early
assess lung function
guide lifestyle modifications

Regular health checkups are especially important for individuals with respiratory symptoms or occupational exposure.

Lifestyle Measures That Support Asthma Control

Helpful practices include:

avoiding smoking
improving indoor air quality
wearing masks in polluted environments
maintaining healthy weight
regular, moderate exercise

Lifestyle support complements medical treatment.

Mental Health and Asthma

Stress and anxiety can worsen asthma symptoms.

Stress management:

reduces symptom frequency
improves medication response

Holistic care improves asthma outcomes.

Importance of Medication Adherence

Asthma medications work best when:

taken regularly as prescribed
inhaler technique is correct

Skipping treatment increases flare-up risk.

Long-Term Outlook for Adults With Asthma

With proper management:

symptoms are well controlled
severe attacks are preventable
normal activity levels are achievable

Most adults with asthma lead active, productive lives.

Conclusion

Asthma symptoms in adults are often subtle, variable and easily mistaken for common respiratory problems. Wheezing, breathlessness, chest tightness and chronic cough should not be ignored, especially when triggered by pollution, exercise or weather changes. Early diagnosis, trigger control and consistent treatment are essential to prevent severe attacks and preserve lung health. Recognising adult asthma early empowers individuals to manage symptoms effectively and maintain a good quality of life.

References

Indian Council of Medical Research (ICMR) – Respiratory Disease and Asthma Studies
World Health Organization (WHO) – Asthma Management and Prevention Guidelines
National Family Health Survey (NFHS-5) – Respiratory Health Indicators
Lancet Respiratory Medicine – Adult Asthma Outcomes and Management
NITI Aayog – Air Pollution and Respiratory Health Reports
Statista – Global Asthma Prevalence and Trends

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