Related Experiment Video
Updated: Dec 16, 2025

Comparing Objective Conjunctival Hyperemia Grading and the Ocular Surface Disease Index Score in Dry Eye Syndrome During COVID-19
Published on: May 25, 2022
COVID-19: Precautionary Guidelines for Ophthalmologists
1Ophthalmology, University of Tabuk, College of Medicine, Tabuk City, SAU.
Abstract:
Several coronaviruses can infect humans, and the globally endemic human coronaviruses, HCoV-229E (human coronavirus 229E), HCoV-NL63 (human coronavirus NL63), and others, tend to cause mild respiratory diseases. The zoonotic Middle East respiratory syndrome coronavirus (MERS-CoV) and severe acute respiratory syndrome coronavirus type1 (SARS-CoV-1) have high fatality rates. In December 2019, the World Health Organization (WHO) was notified by Chinese authorities about an outbreak of pneumonia before the causative organism was identified in January 2020 as a novel coronavirus family. The WHO refers to the virus as coronavirus disease 2019 (COVID-19). Within several weeks, the outbreak has become an emergency, and many countries have since been affected. The method of transmission is not yet fully known but is thought to be mainly respiratory. Healthcare providers, particularly ophthalmologists, are at high risk of a COVID-19 infection through unprotected contact with eye secretions during routine ophthalmic examinations that involve the use of direct ophthalmoscopy and slit-lamp examinations, which are usually performed in a setting that allows for close doctor-patient contact. In light of these, specific measures are needed from an ophthalmic point of view to control the COVID-19 outbreak and to protect health care providers.
Insights
Ophthalmologists face high COVID-19 infection risks from close patient contact and eye secretions. Specific ophthalmic measures are crucial to control the COVID-19 outbreak and protect healthcare providers.
Area of Science:
- Virology
- Infectious Diseases
- Ophthalmology
Background:
- Human coronaviruses (HCoVs) like HCoV-229E and HCoV-NL63 typically cause mild respiratory illness.
- More severe coronaviruses, MERS-CoV and SARS-CoV-1, exhibit high fatality rates.
- A novel coronavirus causing pneumonia, later named COVID-19 by the WHO, emerged in December 2019.
Purpose of the Study:
- To highlight the risk of COVID-19 transmission to healthcare providers, especially ophthalmologists.
- To emphasize the need for specific ophthalmic measures to mitigate COVID-19 spread.
- To protect healthcare professionals during the COVID-19 pandemic.
Main Methods:
- Review of transmission routes for coronaviruses.
- Identification of high-risk procedures in ophthalmology (direct ophthalmoscopy, slit-lamp examination).
- Analysis of close doctor-patient contact settings in ophthalmic care.
Main Results:
- Ophthalmologists are at significant risk due to potential exposure to infectious eye secretions.
- Routine ophthalmic examinations facilitate close patient-provider proximity, increasing transmission risk.
- Current understanding suggests respiratory droplets are the primary transmission method.
Conclusions:
- Urgent implementation of specific protective measures is necessary in ophthalmology.
- Protecting healthcare providers is paramount to maintaining essential eye care services.
- Controlling COVID-19 transmission requires tailored strategies across medical specialties.
More Related Videos
Related Concept Videos
Standard Precaution
Hand hygiene is the most crucial means to prevent the transmission of disease. Employers are legally required to provide their workers with personal protective equipment (PPE) to minimize exposure or contact with...
Transmission-based Precautions I: Contact, Enteric, and Droplets
Contact Precautions:
Contact precautions are the measures taken to prevent the transmission of infectious agents, especially epidemiologically important microorganisms such as MRSA or influenza, primarily transmitted through direct or indirect contact with an...
Transmission-based Precautions II: Airborne and Protective Environment
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
Accessory Structures of the Eye
Glaucoma: Overview
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...

