Glaucoma

Glaucoma refers to a chronic eye disorder that leads to vision loss and even blindness by inflicting damage on the optic nerve, primarily as a result of elevated intraocular pressure (IOP).

Glaucoma occurs in millions of individuals globally and is a major public health concern, mainly because early signs and symptoms are often minimal or non-existent.

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"Glaucoma is a stealthy menace to vision, but with heightened awareness, regular testing, and adequate treatment, serious loss of vision can frequently be avoided."

What is glaucoma?

Glaucoma refers to a group of eye diseases that includes progressive degeneration of the optic nerve at the back of the eye, leading ultimately to loss of peripheral vision and, in a minority, also central vision.

Most often, damage results from raised intraocular pressure; however, some types occur despite normal eye pressure.

Symptoms and Detections

Most people who have glaucoma do not feel anything is wrong until their eyesight starts to fail.

Regular, comprehensive eye exams to monitor eye pressure and for optic nerve injury and loss of vision are thus necessary.

Acute Angle-Closure Glaucoma

Acute angle-closure glaucoma, however, comes on suddenly and requires immediate medical attention.

Types of Glaucoma

Primary Open-Angle Glaucoma

The most common form is primary open-angle glaucoma, which develops gradually and usually is not symptomatic until vision loss is severe.

Angle-Closure Glaucoma

Angle-closure glaucoma is less frequent but more severe, occurring suddenly with vision loss, eye pain, headache, nausea, or blurred vision.

Secondary Glaucoma

Secondary glaucoma occurs due to other conditions of the eye, including trauma, inflammation, or diabetes, that increase IOP.

Congenital and Juvenile Forms

Congenital and juvenile forms present in children and adolescents and are usually identified early in life with regular eye exams.

Diagnosis

Assessment and observation:

Diagnosis is tonometry (measurement of IOP)-based.

Optical coherence tomography (OCT) is utilized to assess the optic nerve and retinal nerve fibre layer.
Visual fields are tested to delineate fields of vision loss.
Management

Therapeutic Alternatives:

Glaucoma cannot be cured or reversed, but its progression can be halted by lowering intraocular pressure.

1.
Prescription eye drops contain alpha-adrenergic agonists, carbonic anhydrase inhibitors, prostaglandins, and beta-blockers.
2.
Laser treatment for improved drainage of fluids
3.
Surgical techniques range from classical incisional techniques to micro-invasive glaucoma surgery (MIGS).

Living with Glaucoma

Effective management of care demands constant vigilance and adherence to treatment protocols.

Regular follow-ups are called for in determining improvement and adjusting treatment regimens, as needed.

Early treatment greatly increases the prospects for maintaining visual acuity.

The importance of early diagnosis

Glaucoma remains the second most common cause of irreversible blindness.

Early detection, particularly in high-risk individuals, can be a huge factor in preventing permanent vision loss and the maintenance of quality of life.

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