What is non glaucomatous?

What is non glaucomatous?

Non-glaucomatous optic neuropathy (NGON) was defined as clinical evidence of impaired optic nerve function in the absence of field or disc changes of glaucoma.

What is glaucomatous disc?

In glaucoma, the optic nerve gets damaged. There are many blood vessels that emerge from the optic disc to the retina. Glaucoma causes loss of the neural reddish tissue and there is progressive cupping of the optic disc – enlargement of the whitish central part.

What is normal CDR?

The average CDR is 0.4. However, CDR ratio in normal patients can range from 0.0 to 0.9 because of inter-individual variation in disc size and cup size. Normal CDRs range from less than 0.3 (66% of normal individuals) to greater than 0.5 (only 6–10% of normal individuals).

What is disc excavation?

the act of hollowing out. 2. a hollowed-out space, or pouchlike cavity. atrophic excavation cupping of the optic disk, due to atrophy of the optic nerve fibers.

How long does it take to lose sight with glaucoma?

In the most common form of glaucoma, primary open-angle glaucoma, damage to the retinal cells occurs quite slowly. Untreated glaucoma can progress to blindness within several years. Acute angle-closure glaucoma is a less common form that can impair vision much more quickly.

Can glaucoma be misdiagnosed?

Although glaucoma is the main cause of disc cupping, 20% of the patients can be misdiagnosed [10].

What causes glaucomatous cupping?

Glaucoma is caused by high pressure in the eye damaging the optic nerve, which results in loss of individual nerve cells. This causes a subsequent increase in the size of the cup, also called cupping.

Can glaucoma be cured?

The damage caused by glaucoma can’t be reversed. But treatment and regular checkups can help slow or prevent vision loss, especially if you catch the disease in its early stages. Glaucoma is treated by lowering your eye pressure (intraocular pressure).

What does a normal optic disc look like?

Typically the optic disc looks like an orange-pink donut with a pale centre. The orange-pink appearance represents healthy, well perfused neuro-retinal tissue. There are many pathological reasons why a disc may lose this orange-pink colour and appear pale ie optic atrophy.

What is NRR in eyes?

The neuroretinal rim (NRR) of the optic nerve head is the intrapapillary extension of the optic nerve fibres. As glaucoma leads to a loss of NRR, measurement of this is critical in the morphometric analysis of the optic disc in glaucoma.

Is glaucoma a disability?

If you have been diagnosed with glaucoma, you may be eligible for Social Security Disability (SSDI) benefits. The Social Security Administration acknowledges that it may be challenging to work with vision loss and therefore makes benefits available to those with severe vision loss or blindness.

Is reading bad for glaucoma?

Glaucoma patients have particular difficulty with these aspects of reading. Even when glaucoma patients can read, it is more difficult. Over long periods of time, individuals with more severe glaucoma tire, and their reading speed slows. They also understand less of what they read.

What are the signs and symptoms of compressive injury in glaucoma?

Many such tumors will present in patients who are younger than the average glaucoma patient. Patients with compressive injury may exhibit visual fields that resemble those of a glaucoma patient, with arcuate or nerve fiber bundle loss and shallow optic disc cupping.

Is there anything other than glaucoma that affects the optic nerve?

This is probably the most important evidence that something other than glaucoma is affecting (or has affected) the optic nerve. Large tumors in the perisellar area, pituitary adenomas or craniopharyngiomas can produce glaucoma-like optic neuropathy.

What is a tick appropriate form for excavation work?

(tick appropriate) ( The excavation work is to be solely undertaken by a contracted party OR BAC personnel and a detailed work method statement / risk assessment has been previously prepared, reviewed by BAC & is attached to this Form. Attach documentation & proceed to Section 2 on the following page.

Are there other conditions besides glaucoma that cause visual field loss?

Many conditions besides glaucoma can produce the appearance of the disease. Despite the dense visual field defect, the patient was unaware of it. Patients with congenital visual field loss may be described by others as “clumsy”; the defects explaining their clumsiness are often not picked up until later in life.