Glaucoma is a condition where optic nerve damage causes the visual field to gradually narrow, and in severe cases, can lead to permanent vision loss.
It primarily occurs when elevated intraocular pressure (IOP) damages the optic nerve; however, it is important to note that glaucoma can also develop even when eye pressure is within the normal range.
The optic nerve is responsible for transmitting visual information to the brain.
Because damage to this nerve is often asymptomatic in its early stages, many people do not notice their vision narrowing until it is well advanced.
This makes early detection and treatment essential to prevent blindness.
As one of the leading causes of blindness worldwide, the risk of glaucoma increases significantly after age 40.
Key risk factors include high blood pressure, diabetes, and a family history of the disease.
Types of Glaucoma
As the most common form, it occurs when the eye’s drainage system gradually becomes clogged, leading to a rise in intraocular pressure.
Since there are almost no symptoms in the early stages, early detection through regular check-ups is essential.
This type occurs when the eye’s drainage system is suddenly blocked, causing a rapid and severe increase in intraocular pressure.
It can be accompanied by sudden vision loss and intense eye pain,
requiring immediate emergency medical attention.
Symptoms of Glaucoma
Glaucoma often shows few to no symptoms in its early stages, making it difficult to detect on your own.
However, as it progresses to the advanced stages, noticeable changes in vision may occur. It is crucial to seek an immediate eye examination if you experience any of the following symptoms.
Severe pain in the eyes or head may occur.
The peripheral vision gradually narrows,
while the central vision remains relatively preserved until the end.
In acute angle-closure glaucoma, intraocular pressure rises rapidly,
which can cause sudden vision loss.
Causes of Glaucoma
Increased Intraocular Pressure
The primary cause is an increase in intraocular pressure. When eye pressure rises, it begins to damage the optic nerve.
Genetic Factors
A family history of glaucoma increases the risk of developing the condition. Regular eye examinations are particularly crucial if immediate family members have a history of the disease.
High Blood Pressure and Diabetes
Failure to properly manage blood pressure and blood sugar levels can increase the risk of developing glaucoma.
Advanced Age
The risk of developing glaucoma increases with age.
For individuals aged 40 and older, regular eye examinations are essential.
Other Health Conditions
Cardiovascular diseases, obesity, and other systemic conditions can also influence the development of glaucoma.
Glaucoma Diagnosis/Examination
Intraocular Pressure Measurement
We measure the pressure inside your eyes to check for
any signs of elevated intraocular pressure.
Fundus Photography
After dilating the pupils, we examine the condition of the optic nerve to check for any signs of damage.
Optical Coherence Tomography (OCT)
Cross-sectional images of the optic nerve are
captured to measure the thickness of the nerve fiber layer and evaluate the extent of any damage.
Glaucoma Treatment
Use of Intraocular Pressure-Lowering Medications
Laser Surgery
Surgical procedures such as
trabeculectomy or
glaucoma implant insertion
Taking medications known to have
neuroprotective effects
Glaucoma Prevention Guidelines
Smoking can significantly increase the risk of developing glaucoma; therefore, smoking cessation is essential for maintaining eye health.
Ultraviolet (UV) rays can cause damage to the eyes. Protect your vision by wearing sunglasses whenever you go outdoors.
Maintain healthy blood pressure and blood sugar levels by adopting a balanced diet and engaging in regular exercise.
For those aged 40 and older, it is important to have an eye exam at least once a year.
If you have a family history of glaucoma, screenings are recommended starting from your 30s.
Currently, there is no permanent cure for glaucoma. However, with proper treatment and management, the progression of the disease can be slowed or even halted.
This may involve medications to control eye pressure or surgical procedures
As glaucoma progresses, the visual field gradually narrows, and in the worst cases, it can lead to blindness.
Because there are no noticeable symptoms in the early stages, it is important to detect it early through regular checkups.
It is important to avoid excessive stress, high blood pressure, and high blood sugar in daily life, and to maintain regular exercise and healthy eating habits.
Additionally, you should have regular eye exams to check your intraocular pressure and continue treatment as prescribed by your doctor.
In cases of angle-closure glaucoma, a sudden increase in intraocular pressure can cause abrupt vision loss and severe eye pain.
Immediate emergency treatment is required in such cases.
Check out the blog below for more information about glaucoma.
