Related Experiment Video
Updated: Mar 23, 2026
07:11
Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
6.9K
Evaluation of the Optic Nerve Head in Glaucoma
Monica Gandhi1, Suneeta Dubey1
1Consultant, Department of Glaucoma and Anterior Segment, Dr Shroff's Charity Eye Hospital, New Delhi, India.
Journal of Current Glaucoma Practice
|March 22, 2016
Summary
Evaluating optic nerve head characteristics is crucial for diagnosing glaucoma. Detailed examination of the optic disk helps differentiate glaucomatous from non-glaucomatous optic neuropathy.
Area of Science:
- Ophthalmology
- Optic Neuropathy
Background:
- Glaucoma is an optic neuropathy characterized by changes in the optic disk.
- Clinical identification of optic nerve head features is the primary diagnostic step, even with advanced technology.
Purpose of the Study:
- To emphasize the importance of examining optic nerve head characteristics for glaucoma diagnosis.
- To detail key parameters for differentiating glaucomatous from non-glaucomatous optic neuropathy.
Main Methods:
- Careful clinical examination of the optic disk.
- Assessment of specific disk parameters including size, shape, rim, cup, hemorrhages, atrophy, and RNFL visibility.
Main Results:
- Detailed evaluation of optic disk parameters is essential for accurate diagnosis.
- Specific features like cup-to-disk ratios and RNFL visibility aid in differentiation.
Conclusions:
- Thorough examination of optic nerve head morphology is fundamental in glaucoma diagnosis.
- Understanding these parameters is key to distinguishing glaucoma from other optic neuropathies.
Related Concept Videos
01:25Glaucoma: Overview
1.6K
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
1.6K
01:27Open Angle Glaucoma: Treatment
1.1K
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
1.1K
01:28Angle Closure Glaucoma: Treatment
1.6K
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
1.6K
01:20Anatomy of the Eyeball
11.3K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
11.3K