Related Experiment Video
Updated: Jul 5, 2025

05:49
Alternate Immersion in Glucose to Produce Prolonged Hyperglycemia in Zebrafish
Published on: May 5, 2021
4.9K
[Choroidal changes in patients with diabetes mellitus].
A S Khalatyan1, Yu N Yusef1,2
1Krasnov Research Institute of Eye Diseases, Moscow, Russia.
Vestnik Oftalmologii
|January 18, 2024
Summary
Diabetic retinopathy (DR), a leading cause of vision loss, involves changes in the choroid. This review analyzes studies on choroidal thickness and vascularity in diabetes mellitus (DM) patients with DR, finding conflicting data.
Area of Science:
- Ophthalmology
- Endocrinology
- Medical Imaging
Background:
- Diabetic retinopathy (DR) is a major cause of global vision loss, stemming from diabetes mellitus (DM).
- The choroid, crucial for retinal health, may be affected by diabetic pathology, influencing DR development.
- Existing research on choroidal changes in DM, particularly DR, presents conflicting findings.
Approach:
- Systematic review of articles examining structural choroidal changes in diabetic patients.
- Focus on choroidal thickness (CT) and choroidal vascularity index (CVI) as markers.
- Analysis of studies correlating choroidal status with different stages of DR.
Key Points:
- Choroidal thickness (CT) and choroidal vascularity index (CVI) are key metrics for assessing choroidal vascularization.
- Conflicting data exists regarding choroidal thickness in diabetic patients, especially those with DR.
- The precise role of choroidal pathology in the pathogenesis of DR remains under investigation.
Conclusions:
- The relationship between structural choroidal alterations and diabetic retinopathy requires further clarification.
- A comprehensive understanding of choroidal status in DM patients is essential for managing DR.
- This review synthesizes current evidence to address the controversy surrounding choroidal changes in diabetic retinopathy.
Related Concept Videos
Glaucoma: Overview
574
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...
574
Diabetes Mellitus: Type 2 and Gestational
2.4K
Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
2.4K
Open Angle Glaucoma: Treatment
453
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...
453
Photoreceptors and Visual Pathways
6.0K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.0K
Diabetes: Symptoms, Diagnosis, and Complications
546
For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
546

