POAG (Primary Open-Angle Glaucoma):

This is the most frequent type of glaucoma, accounting for a considerable proportion of patients. POAG develops gradually, with few symptoms until the latter stages.

POAG develops when the drainage pathways in the eye get blocked over time, resulting in increased intraocular pressure (IOP). Elevated IOP harms the optic nerve, causing progressive vision loss.

Glaucoma with Angle Closure:

Unlike POAG, angle-closure glaucoma is characterized by a sudden occlusion of the drainage angle, resulting in a rapid increase in IOP.

Symptoms: Severe eye pain, headache, nausea, and blurred vision are common with this variety. To avoid permanent eyesight loss, rapid medical intervention is required.

Glaucoma with Normal Tension:

Despite normal IOP levels, optic nerve injury happens in this manner. The specific cause is unknown, but factors such as decreased blood supply to the optic nerve may play a role.

Regular eye exams and monitoring the health of the optic nerve are critical for recognizing normal-tension glaucoma.

Glaucoma Secondary:

Secondary glaucoma is caused by other eye illnesses or diseases, such as trauma, inflammation, or diabetes.

Controlling secondary glaucoma requires addressing the underlying cause. Medication, surgery, or a combination of the two may be used as treatment options

medication benefit to treat glaucoma 
Cheap Bimatoprost eye drops are generally used to treat glaucoma, a condition in which excessive pressure in the eye(s) causes optic damage but never results in vision loss. This eyedrop is also an effective treatment for ocular hypertension.  A condition in which the pressure inside the eye is excessive yet does not cause optic nerve injury or vision loss.

 what are the red flags 

Intraocular Pressure (IOP) Elevation:

High IOP is a major risk factor for glaucoma. Regular eye exams that monitor IOP can aid in the detection of potential problems.
Gradual Peripheral Vision Loss:

The gradual loss of peripheral vision is one of the early indications of glaucoma. Individuals may suffer tunnel vision or difficulties seeing items to the side.

Vision Distortion:

Blurred vision, whether sudden or gradual, could be a sign of optic nerve damage caused by glaucoma.
Lights with Halos:

Halos surrounding lights, especially in low-light circumstances, may indicate increased intraocular pressure and probable optic nerve injury.
Headaches with Severe Eye Pain:

Acute angle-closure glaucoma is characterized by acute eye discomfort, headaches, nausea, and vomiting. This is a medical emergency that must be addressed immediately.

Redness and discomfort in the eyes:

Persistent redness, irritation, or discomfort in the eyes may indicate the presence of an underlying eye problem, such as glaucoma.
Color Changes in the Eyes:

Changes in iris color, particularly in pigmentary glaucoma, may be a warning sign. This can result in pigment granule dispersion, which can disrupt the drainage system.
Glaucoma in the Family:

A family history of glaucoma raises the likelihood of developing the illness. Individuals with glaucoma in their family should be diligent about getting regular eye exams.

It is crucial to note that in the early stages, glaucoma generally advances slowly and without obvious symptoms. Regular comprehensive eye exams, including intraocular pressure measurement and optic nerve testing, are critical for early detection and therapy. If any of these red flags are detected, it is critical to seek immediate medical attention from an eye care specialist to prevent further vision loss. It's important to remember that early intervention and sticking to treatment plans can greatly delay the progression of glaucoma and preserve eyesight.