Related Experiment Video
Updated: Mar 7, 2026

04:48
Establishing a Severe Corneal Inflammation Model in Rats Based on Corneal Epithelium Curettage Combined with Corneal Sutures
Published on: November 22, 2024
956
Corneal Blindness in Leprosy in Eastern Uttar Pradesh
Indian Journal of Dermatology, Venereology and Leprology
|February 7, 2017
Summary
Leprosy commonly affects the eyes, with corneal involvement seen in over 40% of cases. Corneal blindness is a major cause of vision loss in leprosy patients, often linked to corneal anesthesia and lagophthalmos.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Dermatology
Background:
- Leprosy, a chronic infectious disease, frequently causes ocular complications.
- Ocular involvement significantly impacts patient quality of life and visual function.
Purpose of the Study:
- To investigate the prevalence and causes of corneal involvement in leprosy patients with ocular manifestations.
- To determine the contribution of corneal lesions to blindness in leprosy.
Main Methods:
- Retrospective analysis of 274 leprosy cases with ocular involvement.
- Documentation of specific eye lesions, including conjunctivitis, keratitis, iritis, and lagophthalmos.
- Assessment of causes for corneal involvement, such as corneal anesthesia, lagophthalmos, ectropion, entropion, and trichiasis.
Main Results:
- Corneal involvement was present in 118 (43.07%) of 274 leprosy cases with ocular issues.
- Common eye lesions included chronic conjunctivitis (54.01%), keratitis (47.07%), iritis (31.75%), and lagophthalmos (27.76%).
- Corneal blindness accounted for 55.6% of total blindness in this cohort, with corneal anesthesia and lagophthalmos as primary causes.
Conclusions:
- Corneal complications are highly prevalent in leprosy patients with ocular involvement.
- Timely intervention for corneal anesthesia and lagophthalmos is crucial to prevent vision loss and blindness in leprosy.
- Ocular manifestations, particularly corneal disease, represent a significant burden of disability in leprosy.
Related Concept Videos
Photoreceptors and Visual Pathways
10.4K
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,...
10.4K
Angle Closure Glaucoma: Treatment
1.5K
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...
1.5K
Unrenewable Cells
3.0K
In humans, the photoreceptor cells of the eye and sensory hair cells of the ear lack stem cells. These cells are thus unrenewable and cannot be replaced when they are damaged or destroyed.
Photoreceptors
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of...
Photoreceptors
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of...
3.0K
Glaucoma: Overview
1.6K
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...
1.6K
Focusing of Light in the Eye
6.8K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
6.8K
Pulmonary Tuberculosis I
1.1K
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
1.1K

