Leading causes of blindness and vision loss include eye diseases. This includes age-related macular degeneration, cataracts and glaucoma – diseases which affect people of all ages but tend to be more prevalent among specific demographic groups.

Cataracts occur when proteins in the lens clump together and interfere with clear vision, leading to symptoms like blurry vision, flashing lights (floaters), halos around lights and poor night vision.

Open-angle glaucoma

Open-angle glaucoma typically develops slowly over time and often without symptoms until severe vision loss has already taken place. It is the most prevalent type of glaucoma and, left untreated, may lead to irreversible blindness within three years if left untreated. Most often caused by elevated intraocular pressure (IOP), African Americans are particularly prone to it.

The front part of your eye is filled with aqueous humor, a clear fluid that nourishes tissues within and drains out through trabecular meshwork in an angle formed between cornea and iris. If this fluid does not produce or drain appropriately over time, its production or drainage may increase, increasing eye pressure gradually and leading to irreparable optic nerve damage, peripheral vision loss and tunnel vision – glaucoma is a condition that may occur and causes irreversible eye pressure increases over time.

Glaucoma occurs when the drainage angle becomes narrower, restricting fluid flow, leading to buildup of fluid and increased eye pressure. This can occur suddenly as in acute angle-closure glaucoma or gradually over time in chronic closed-angle glaucoma.

When the drainage angle becomes completely blocked, eye pressure can quickly skyrocket, becoming extremely dangerous and necessitating immediate medical intervention. An acute attack typically manifests itself by severe eye pain, nausea and vomiting, blurred vision, seeing halos around lights, as well as profuse tearing. If this occurs to you immediately seek medical care at once. Symptoms may include severe eye discomfort, nausea and vomiting as well as blurred vision with halos around them and profuse tears from an acute attack.

Treatment for glaucoma involves medications and/or surgery to reduce eye pressure. Timolol eyedrops are most frequently prescribed; other medicines and surgeries may be utilized. If you suspect you may have glaucoma, be sure to schedule regular comprehensive eye exams and inform your physician of this risk factor.

This activity will explore how an individual’s risk factors and interactions can help health care providers to identify those at greater risk for glaucoma in primary eye care settings. Furthermore, certain eye structures, including Krukenberg spindles and homogeneous trabecular meshwork pigmentation which indicate high-risk scenarios will also help HCPs identify patients accordingly and screen accordingly.

Closed-angle glaucoma

Closed-angle glaucoma occurs when eye pressure rises due to obstruction of its drainage angle by something blocking or covering it, causing vision loss from damage to optic nerve cells and damage. This increase can either be sudden (acute) or over time (chronic). Open-angle glaucoma differs in that pressure increases gradually while changes are dramatic and rapid for closed-angle glaucoma patients.

Closed-angle glaucoma is more prevalent among older individuals and can lead to vision loss, but does not impact every individual. Family history of the condition is the single greatest risk factor. Closed-angle glaucoma can be treated using medications to lower eye pressure – including over-the-counter drops as well as prescription pills taken orally – prescribed by your ophthalmologist who will help determine which option would work best with your lifestyle and daily activities.

Closed-angle glaucoma shares many similarities with open-angle glaucoma: anything that impedes or slows fluid drainage from the eye can increase pressure. Common culprits include lens of eye debris, cataract, swollen tissue or thickened iris which block drainage angle drainage holes; lens cloudiness due to cataract, infection or injury and taking certain medications such as alpha-adrenergic agonists used to treat urinary incontinence or certain anticholinergics are other potential causes.

Symptoms of Glaucoma Disease include gradual loss of peripheral vision and tunnel vision. You may also experience headaches and eye pain. If eye pressure becomes extremely high, an acute angle-closure glaucoma attack could occur and result in blindness if left untreated promptly.

As the only way to tell whether or not you have this form of glaucoma, a comprehensive eye exam must include a test to measure eye pressure (tonometry). This will be performed with you staring into a special mirror; prior to testing you will also receive eye drops which widen (dilate) your pupil, which allows your ophthalmologist to gain more of an inside view. If a diagnosis of closed-angle glaucoma occurs, medication or surgery may be prescribed in order to control it effectively.

Secondary glaucoma

The front of each eye is filled with clear liquid known as aqueous humor, which drains off through channels at the point where colored parts (iris) and clear parts (cornea) meet (the anterior chamber angle). Too much pressure in either eye may damage optic nerves which send information between eyes and brain resulting in blurry vision and halos around lights among other symptoms.

Glaucoma can often go undetected and people with it don’t notice they are losing vision until it is too late to treat it. But it is possible to reduce risk by having regular eye health exams; such exams can detect open-angle glaucoma early and treat it more effectively. Furthermore, protecting eyes from UV radiation and smoke exposure which increases their risk can reduce glaucoma risk significantly.

Secondary Glaucoma is typically caused by another eye disease or injury that mechanically restricts fluid outflow from the eyes, such as trauma to the eyes, inflammation in the eyelids, uncontrolled systemic diseases and certain eye conditions such as pigmentary dispersion syndrome or pseudoexfoliation syndrome. Other contributing factors can include age and herpes simplex virus infection history – with people over 55 and of certain ethnic backgrounds such as Asians especially susceptible.

Treating these forms of glaucoma generally starts by treating its cause: for instance, if an eye is inflamed with bacteria, antibiotics can help manage inflammation; similarly removing an infected lens can decrease IOP; however this may not always be sufficient; some cases require surgery to repair trabecular meshwork instead.

These forms of glaucoma only account for a minority of all cases; however, they can be the most difficult to diagnose and treat, often manifesting with high intraocular pressure (IOP). Such patients typically fail to respond well to maximum tolerated medication and would benefit most from combined treatments such as trabeculectomy with antiproliferative therapy or aqueous shunt devices.

Acute angle-closure glaucoma

Under these circumstances, fluid from the front of the eye cannot reach and exit through its angle due to physical blockage by part of the iris, leading to pressure build-up in the eye and damage to optic nerve fibers resulting in blindness. Therefore, immediate medical treatment must be administered in order to restore fluid flow within the eye and protect its health in an emergency situation.

An eye in good condition should allow clear fluid called aqueous humor to drain internally through an angle at the junction between cornea and iris via structures such as trabecular meshwork and Schlemm’s canal, creating an internal drainage channel known as an angle. When these channels become blocked by obstruction, eye pressure increases dramatically leading to chronic or acute angle-closure glaucoma; acute angle-closure glaucoma being more serious as sudden intraocular pressure rises rapidly accompanied by symptoms like blurred vision halos around lights or headache.

Glaucoma of this type is much less prevalent, yet can quickly and significantly decrease vision loss. People living with this condition often exhibit no symptoms until their optic nerve has been irreparably damaged, eventually leading to blindness. Therefore, regular eye exams should be scheduled so glaucoma can be diagnosed and treated before blindness arises.

Angle-closure glaucoma symptoms include eye pain and redness, decreased vision (often misdiagnosed as migraine), colored halos around lights, nausea and vomiting; left untreated acute angle-closure glaucoma can quickly lead to permanent blindness in an eye within days.

At times of acute angle-closure glaucoma attacks, eye pressure must be immediately decreased with medications, and laser iridotomy may be needed to break it off and restore drainage. Iridotomy involves creating a hole in the periphery of the iris either surgically or with lasers in order to bypass pupil block and restore drainage; often both eyes need this procedure performed simultaneously in order to avoid future attacks; once broken off however, medication treatments should continue treating glaucoma-related eye pressure problems including eye drops or medications specifically tailored towards controlling this condition.