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Related Concept Videos

Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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...
Ophthalmic Drug Delivery Systems01:23

Ophthalmic Drug Delivery Systems

Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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...
Glaucoma: Overview01:25

Glaucoma: Overview

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...

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Related Experiment Video

Updated: Jun 4, 2026

Ultrasound Cyclo Plasty in Eyes with Glaucoma
05:05

Ultrasound Cyclo Plasty in Eyes with Glaucoma

Published on: January 26, 2018

Evaluating eye drop instillation technique in glaucoma patients.

Raghav Gupta1, Bharat Patil, Bhavin M Shah

  • 1Glaucoma Facility, Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.

Journal of Glaucoma
|February 22, 2011
PubMed
Summary

Most glaucoma patients struggle with correct eye drop instillation, leading to medication noncompliance. Improving technique is crucial for effective glaucoma management.

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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

Published on: May 25, 2020

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Last Updated: Jun 4, 2026

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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
07:11

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

Published on: May 25, 2020

Area of Science:

  • Ophthalmology
  • Patient Care

Background:

  • Glaucoma management relies heavily on topical medications.
  • Correct eye drop instillation technique is essential for therapeutic efficacy.

Purpose of the Study:

  • To evaluate the self-reported technique of eye drop instillation in patients with glaucoma.
  • To identify common errors in eye drop administration among glaucoma patients.

Main Methods:

  • Seventy glaucoma patients with at least 6 months of topical medication use were assessed.
  • Patients instilled a tear substitute using their usual method for glaucoma eye drops.
  • Key parameters included time, number of drops, contact location, bottle tip contact, and eyelid/tear duct closure.

Main Results:

  • Only 8.57% of patients correctly instilled eye drops (one drop into the conjunctival sac without bottle contact).
  • Over 75% of patients touched the bottle tip to the eye or surrounding tissue.
  • 31.43% of drops landed on eyelids or cheeks, and 28.57% closed eyes immediately after instillation.

Conclusions:

  • A significant majority of glaucoma patients (nearly 90%) demonstrate incorrect eye drop instillation techniques.
  • Improper technique may be a major contributor to unintentional noncompliance in glaucoma treatment.
  • Patient education on proper eye drop administration is vital for optimizing glaucoma therapy.