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Related Concept Videos

Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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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.
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Angle Closure Glaucoma: Treatment01:28

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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...
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Glaucoma: Overview01:25

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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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Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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Related Experiment Video

Updated: Nov 1, 2025

Comparing Objective Conjunctival Hyperemia Grading and the Ocular Surface Disease Index Score in Dry Eye Syndrome During COVID-19
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Global Ophthalmology Practice Patterns during COVID-19 Pandemic and Lockdown.

Srinivasan Sanjay1, Seo Wei Leo2, Kah-Guan Au Eong3,4

  • 1Department of Uvea and Ocular Immunology, Narayana Nethralaya, Bengaluru, India.

Ophthalmic Epidemiology
|June 25, 2021
PubMed
Summary
This summary is machine-generated.

During the COVID-19 pandemic, global ophthalmologists significantly reduced surgical procedures. Many ophthalmologists adapted practice patterns and prioritized patient safety measures to mitigate infection spread.

Keywords:
COVID19PPEophthalmic surgeryoutpatient consultationstelehealth

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Area of Science:

  • Ophthalmology
  • Public Health
  • Infectious Disease Epidemiology

Background:

  • The severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) pandemic necessitated rapid changes in medical practice globally.
  • Ophthalmology, involving close-contact procedures, faced unique challenges in adapting to infection control measures.
  • Understanding practice pattern shifts is crucial for assessing the impact of the pandemic on eye care delivery.

Purpose of the Study:

  • To evaluate the impact of practice patterns among international ophthalmologists during the COVID-19 pandemic.
  • To identify modifications made in ophthalmology practices for emergency surgeries and routine care.
  • To assess the challenges and adaptations in ophthalmology practices worldwide due to COVID-19.

Main Methods:

  • An international online survey was distributed to ophthalmologists via email, social media, and professional associations.
  • Survey data included practice modifications, surgical volume changes, and personal protective equipment (PPE) availability.
  • Statistical analyses were performed to correlate practice changes with country-specific data and PPE access.

Main Results:

  • A significant reduction in surgical procedures was observed, with 46% of ophthalmologists halting surgeries and 40% performing less than 25% of their usual volume.
  • 41% of ophthalmologists considered resuming elective surgeries after evaluating the situation and consulting professional bodies.
  • Over two-thirds of respondents prioritized and mandated physical distancing, mask use, and hand hygiene for patients and staff.

Conclusions:

  • The global survey reveals diverse practice "shut down" modes and varying capacities to manage eye care during the pandemic.
  • The curtailment of ophthalmology practice had profound immediate and long-term implications on practitioners' livelihoods.
  • Ophthalmologists and their staff demonstrated resilience and pragmatic adaptation to the unprecedented changes brought by COVID-19.