Description of glaucoma.
Clear vision depends on the health of the optic nerve, and a glaucoma is a group of eye conditions that damage the optic nerve. This damage commonly happens when your eye experiences very high pressure.
Glaucoma is one of the leading causes of blindness in those over the age of 60. Although it can occur at any age, older people are more prone to do so.
Many cases of glaucoma have no symptoms. You might not notice a change in your vision until the issue has greatly worsened because the effects are so gradual.
Due to the permanent nature of glaucoma-related vision loss, it’s crucial to have routine eye exams that include measurements of your eye pressure in order to obtain an early diagnosis and determine the most appropriate course of therapy. Glaucoma can be detected early enough to prevent or delay vision loss. Most patients with the condition will need therapy for the remainder of their lives ( by our best eye specialist, at Bharti Eye Foundation).
The optic nerve: what is it?
Vision is greatly influenced by your optic nerve. It transmits information to the brain from the retina, which is a network of nerve cells located in the back of the eye and resembles the film in an old-fashioned camera. These messages are what your brain uses to produce visuals.
Causes of Glaucoma
Aqueous humor, the liquid that is inside your eye, normally exits the eye through a mesh-like tube. The liquid might build up if this route becomes clogged or the eye produces too much fluid. Sometimes, experts are unsure of what is causing this obstruction. However, it is heritable, which means that parents can pass it on to their offspring.
What Happens When You Have Glaucoma?
Signs of open-angle glaucoma
There are no early warning indications or noticeable symptoms of open-angle glaucoma. Your peripheral (side) vision becomes increasingly impaired as the illness worsens.
Most open-angle glaucoma sufferers don’t become aware of any changes in their vision until the damage is fairly advanced. Because of this, glaucoma is known as the “silent thief of sight.” Regular eye exams can assist our best ophthalmologist in identifying this condition before you begin to lose vision. How frequently you should have eye exams can be determined by our best ophthalmologist.
Signs of angle-closure glaucoma
Angle-closure glaucoma sufferers may go undiagnosed before an incident. Vision blurriness, halo effects, light headaches, or eye pain are some of the early signs of an attack.
As soon as possible, an ophthalmologist should examine anyone exhibiting these symptoms. Angle-closure glaucoma attacks include the following symptoms:
Strong headache, nausea, or vomiting, redness of the face or forehead, diminished eyesight or blurriness, or the perception of rainbows or halo
Normal tension glaucoma symptoms
Those who have “normal tension glaucoma” have normal eye pressure but glaucoma symptoms including blind spots in their field of vision and optic nerve damage.
Am I susceptible to glaucoma?
Although everybody can get glaucoma, some people are more susceptible. You’re more vulnerable if you:
- Are over 60, particularly if you identify as Hispanic or Latino
- Over 40 and of African American descent
- Have glaucoma in your family
Ask our best eye doctor how frequently you should have your eyes checked and discuss your glaucoma risk with them. Every one to two years, if you’re at higher risk, you should have a thorough dilated eye exam.
What Symptoms Indicate Glaucoma?
Primary open-angle glaucoma is the most prevalent variety. Only a progressive loss of vision is the only symptom. For our ophthalmologist or eye specialist, to keep track of any changes in your vision, you must have full eye exams once a year.
Narrow-angle glaucoma often referred to as acute-angle closure glaucoma, is a medical emergency. If you encounter any of the following signs, consult a physician right away:
- Acute eye ache
- Nausea
- Vomiting, eye redness, and unexpected visual disturbances
- The perception of colorful circles surrounding lights
- Abrupt vision haze
Diagnosis
Regular eye exams by ophthalmologists include a glaucoma test. Many diagnostic procedures are available to them:
Ophthalmoscopy
Special light and magnifying lenses are used by the eye doctor to inspect the inside of the eye after placing drops in the eye to enlarge the pupil.
Perimetry
The doctor performs a visual field examination to evaluate the patient’s peripheral (side) vision. When the doctor sets a bright spot at various locations on the edge of the patient’s field of vision, they remain looking straight ahead. This aids in mapping out what the user can see.
Tonometry
A device that either contacts the cornea (applanation) or uses a puff of air to monitor the pressure in the eye is used by the doctor after applying eye drops to numb the eye.
Gonioscopy
After numbing the eyes using eye drops, the doctor applies a specific contact lens to the eye. A mirror built into the lens can be used to determine whether the angle between the iris and the cornea is normal, excessively broad (open), or inadequately narrow (closed).
Pachymetry
The doctor uses a probe to assess the cornea’s thickness on the front of the eye. The doctor will consider this while evaluating all the results because corneal thickness might alter ocular pressure readings.
Treatment
Reducing ocular pressure is the goal of glaucoma treatment. The most typical and frequent initial treatment is the regular use of prescription eye drops. Systemic drugs, laser therapy, or other types of surgery might be necessary for some circumstances. Even though glaucoma does not yet have a cure, early detection and ongoing treatment can help maintain vision.
Medications
Currently, glaucoma can be treated with a variety of drugs. Usually, drugs lower ocular pressure that has risen. It is possible to be prescribed a single drug or several drugs. If the drug isn’t lowering pressure enough or if the patient is having side effects, the type of drug may vary.
Surgery
It is possible to employ laser therapy, make a drainage flap in the eye, install a drainage valve, or eliminate the tissue that produces the fluid in the eye. All techniques attempt to reduce the pressure inside the eye when medicine is ineffective. Surgery cannot restore lost vision.
Laser surgery
Laser trabeculoplasty helps in eye fluid outflow. A high-energy laser beam stimulates the trabecular meshwork, the organ that drains fluid from the eye, in order to improve fluid drainage. Because the outcomes might only be temporary, the technique might need to be repeated later.
Ordinary surgery
A trabeculectomy may be necessary for the patient if eye drops and laser eye surgery aren’t managing their eye pressure.
A drainage flap is produced by this filtering microsurgery. The fluid may then seep into the flap before draining into the vascular system.
Implanted drains
For individuals with uncontrolled glaucoma, secondary glaucoma, or children with glaucoma, drainage valve implant surgery may be a possibility. To aid in the drainage of fluid, a tiny silicone tube is put in the eye.
Acute angle-closure glaucoma treatment
A medical emergency is acute angle-closure glaucoma. Those who are impacted may begin treatment straight once to lower their ocular pressure. They’ll likely have a procedure called a laser peripheral iridotomy as well. In this operation, a laser beam enlarges a tiny hole in the iris to permit fluid to flow more freely into the front chamber of the eye where it can drain.
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