April 15, 2024
Difference Between Open And Closed Angle Glaucoma

Glaucoma is a medical word for a collection of eye disorders involving damage to the optic nerve. The brain receives visual information through the optic nerve and in case of glaucoma, the information is disrupted. As a result, glaucoma causes vision loss and alterations in vision. Avoid letting glaucoma impair your vision! You can rely on Skipper Eye-Q International Eye Hospitals for professional glaucoma care and treatment. To make you understand glaucoma symptoms and protect your eyesight, our committed team of eye care specialists provides individualized treatment plans, cutting-edge tests, and sophisticated surgical methods. Make an appointment right now to take charge of your eye health!

Comparing Open And Closed-Angle Glaucoma

Understanding glaucoma can be challenging due to there being many types of glaucoma. In open-angle glaucoma, the drainage angle in the eye stays open, but over time, the trabecular meshwork is obstructed, increasing the pressure inside the eye. On the other hand, acute angle-closure glaucoma is brought on by a rapid rise in ocular pressure as a result of fluid accumulation when the drainage angle narrows or shuts entirely.

Differences in Angle

The main differences between closed-angle closure glaucoma and open-angle glaucoma are the circumstances that cause them, the condition of the drainage angle in the eye, how quickly they advance, and how severe the signs of glaucoma are.

Open-angle Glaucoma

  • The drainage angle stays open.
  • Eye pressure increases slowly.
  • Often no glaucoma symptoms till the condition worsens.

Angle-closure Glaucoma

  • The drainage angle closes or narrows.
  • Eye pressure increases suddenly
  • Symptoms include headache, nausea, severe eye pain, and blurred vision.

Open-angle Glaucoma

The chronic eye disease known as open-angle glaucoma is defined by a slow accumulation of pressure inside the eye as a result of an obstruction in the trabecular meshwork, the drainage angle that controls intraocular fluid. Over time, vision loss results from damage to the optic nerve caused by this elevated pressure. Open-angle glaucoma is frequently asymptomatic in the early stages and may go undiagnosed until it causes a noticeable loss of vision. To manage this problem promptly and prevent irreparable vision loss, routine eye exams are essential.

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Open-angle Glaucoma Symptoms

Open-angle glaucoma symptoms might not appear until the condition has advanced considerably. But when the illness worsens, people might encounter:

  • Loss of peripheral vision
  • Tunnel vision
  • Blurry vision
  • Haloes around lights
  • Redness or discomfort in the eyes
  • Elevated intraocular pressure

Open-angle Glaucoma Causes

Usually, open-angle glaucoma arises from:

  • Eye’s ineffective drainage system
  • Accumulation of watery humour
  • Elevated intraocular pressure
  • Harm to the optic nerve
  • Age, race, genetics, and health issues like hypertension or diabetes.
  • A family history of glaucoma increases risk.

Diagnosis of Open-angle Glaucoma

Open-angle glaucoma is usually diagnosed with a thorough eye examination that includes testing.

  • Tonometry: Intraocular pressure is measured by tonometry.
  • Ophthalmoscopy: Looks for evidence of injury to the optic nerve.
  • Testing for visual field: Evaluates loss of peripheral vision.
  • Gonioscopy: Determines the angle of discharge.
  • Imaging tests: Provide precise pictures of the retina and optic nerve, such as OCT.

Open-angle Glaucoma Treatment

Lowering intraocular pressure is usually the goal of treatment for open-angle glaucoma to stop more visual nerve damage. This can be accomplished by:

  • Prescription eye drops to enhance drainage or decrease fluid production
  • Oral drugs to reduce ocular pressure
  • To enhance drainage, use laser treatment (trabeculoplasty).
  • Surgical techniques to establish new drainage channels, such as drainage device implantation.
  • Follow-up visits with an eye expert and regular monitoring.

Closed-angle Glaucoma

Closed angle closure glaucoma, another name for closed-angle glaucoma or narrow-angle glaucoma, is a condition in which the eye’s drainage angle narrows or gets blocked, which causes an abrupt rise in intraocular pressure. Seeking prompt medical care is necessary for closed-angle glaucoma to avoid visual loss and other consequences. Medication to lower intraocular pressure, laser therapy to widen the drainage angle, or surgery to form a new drainage channel are possible forms of treatment. For acute angle closure glaucoma to be adequately managed, regular monitoring is essential.

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Closed-angle Glaucoma Symptoms

Closed-angle glaucoma symptoms can include

  • Sudden, excruciating eye pain
  • Headache
  • Vomiting and nausea
  • Blurry vision
  • Haloes around lights
  • Redness in the eyes
  • Visibility noticeably declining

Closed-angle Glaucoma Causes

The main cause of closed-angle glaucoma is usually a rapid rise in ocular pressure caused by the iris’s forward bulge, which obstructs the drainage angle of the eye. There are several reasons why this might occur, including:

  • Limited drainage angle within the lens
  • Ageing-related lens thickening
  • Damage or harm to the eyes
  • Some drugs that cause the pupils to dilate
  • History of narrow-angle glaucoma or closed angle closure glaucoma in the family

Closed-angle Glaucoma Diagnosis

  • Comprehensive eye examination: A thorough eye exam that measures intraocular pressure (IOP), examines the optic nerve head, and evaluates visual acuity.
  • Gonioscopy: Assesses the eye’s drainage angle to ascertain if it is open or shut.
  • OCT: Detects variations in the thickness of the retinal nerve fibre layer and the optic nerve head.
  •  Visual field test: Peripheral vision is evaluated during testing, as it may be impacted in more severe instances of acute angle closure glaucoma.
  • Ultrasound biomicroscopy (UBM): Offers valuable insights into the structural anomalies that underlie closed-angle glaucoma.

Closed-angle Glaucoma Treatment

The goal of treating closed-angle glaucoma is to lower intraocular pressure (IOP), manage acute episodes, and avoid vision loss.

Drugs: Medications to reduce intraocular pressure are frequently used as part of immediate therapy (IOP). These might consist of:

    • Topical eye drops
    • Oral medicines

Laser Peripheral Iridotomy (LPI): This treatment uses a laser to make a tiny hole in the iris that lets aqueous humour freely flow, alleviating angle closure.

Surgical Interventions: In extreme circumstances or when LPI and medicine don’t work, surgical techniques such

    • Trabeculectomy: To lower IOP, a trabeculectomy involves opening a new drainage channel.
    • Goniotomy: Improving aqueous outflow by opening the obstructed angle.

Continuous Monitoring: Scheduling routine check-ups with an ophthalmologist to keep an eye on IOP, evaluate the efficacy of therapy, and make any modifications.

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FAQ

What is the difference between open-angle glaucoma and angle-closure glaucoma?

In open-angle glaucoma, the drainage angle in the eye stays open, but over time, the trabecular meshwork is obstructed, increasing the pressure inside the eye. On the other hand, angle-closure glaucoma is brought on by a rapid rise in ocular pressure as a result of fluid accumulation when the drainage angle narrows or shuts entirely.

What are angles in glaucoma?

The drainage angles in the eye where the cornea and iris converge are called the angles in glaucoma. The fluid that nourishes the eye, known as aqueous humour, is largely regulated by these angles.

How To Treat Closed-Angle Glaucoma?

Medications to lower intraocular pressure and surgeries like laser peripheral iridotomy or other treatments to enhance drainage and stop further angle closure are commonly used in the treatment of closed-angle glaucoma.

How To Treat Open-Angle Glaucoma?

Eye drops, oral drugs, or surgical procedures are frequently used to treat open-angle glaucoma to reduce intraocular pressure and avoid optic nerve damage. According to the extent of the illness and the patient’s reaction to therapy, several treatment approaches may be recommended.

Do you have glaucoma symptoms such as discomfort in your eyes or hazy vision? Take action right now! Make an appointment with Skipper Eye-Q International Eye Hospitals for a thorough eye examination. To ensure the best possible eye health, our skilled ophthalmologists specialize in glaucoma treatment options and early diagnosis. Make an appointment now to start down the path to better eyesight!

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