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Related Concept Videos

Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
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...
Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
Alterations in Blood Pressure01:30

Alterations in Blood Pressure

Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart beats)...
Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
Hypertension I: Introduction01:28

Hypertension I: Introduction

Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...

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Updated: Jun 2, 2026

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
08:30

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Published on: March 12, 2016

How does hypertension affect your eyes?

M Bhargava1, M K Ikram, T Y Wong

  • 1Singapore Eye Research Institute, National University of Singapore, Singapore.

Journal of Human Hypertension
|April 22, 2011
PubMed
Summary
This summary is machine-generated.

High blood pressure can damage the eyes, causing hypertensive retinopathy and increasing risks for stroke and heart failure. Controlling blood pressure is crucial for preventing vision loss, especially in diabetic retinopathy.

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Last Updated: Jun 2, 2026

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
08:30

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation

Published on: March 12, 2016

Translaminar Autonomous System Model for the Modulation of Intraocular and Intracranial Pressure in Human Donor Posterior Segments
08:55

Translaminar Autonomous System Model for the Modulation of Intraocular and Intracranial Pressure in Human Donor Posterior Segments

Published on: April 24, 2020

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye
09:03

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye

Published on: June 20, 2015

Area of Science:

  • Ophthalmology
  • Cardiology
  • Nephrology

Background:

  • Hypertension significantly impacts ocular health, leading to hypertensive retinopathy characterized by retinal microvascular changes.
  • Hypertensive retinopathy is prevalent in the general adult population and linked to other organ damage and cardiovascular events.
  • Elevated blood pressure is a major risk factor for diabetic retinopathy development and progression.

Purpose of the Study:

  • To elucidate the multifaceted effects of hypertension on the eye.
  • To highlight the association between hypertensive retinopathy and systemic end-organ damage.
  • To emphasize the role of blood pressure control in preventing vision loss, particularly in diabetic retinopathy.

Main Methods:

  • Review of existing literature on hypertension and its ocular manifestations.
  • Analysis of studies correlating hypertensive retinopathy with systemic health indicators.
  • Examination of clinical trial data on blood pressure management and visual outcomes.

Main Results:

  • Hypertensive retinopathy involves arteriolar narrowing, hemorrhages, and edema, affecting nearly 10% of non-diabetic adults.
  • Hypertensive retinopathy signs correlate with left ventricular hypertrophy, renal impairment, and increased risk of stroke, heart failure, and cardiovascular mortality.
  • Blood pressure control demonstrably prevents vision loss in diabetic retinopathy; its role in other hypertensive-related retinal diseases is under investigation.

Conclusions:

  • Hypertension exerts profound effects on the eye, necessitating awareness among physicians.
  • Hypertensive retinopathy serves as a potential marker for systemic vascular disease and future cardiovascular events.
  • Effective blood pressure management is critical for preserving vision, especially in patients with diabetes.