Related Experiment Video
Updated: Jun 19, 2026
10:10
Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
Published on: February 15, 2022
Bilateral macular hole secondary to remote lightning strike
Krishna A Rao1, Lavanya G Rao, Ajay N Kamath
1Department Of Ophthalmology, Kasturba Medical College, Manipal, India.
Indian Journal of Ophthalmology
|October 29, 2009
Summary
Lightning strike survivors can experience delayed vision loss. This case highlights lightning-induced ocular damage, including cataracts and macular holes, emphasizing the need for comprehensive eye exams after such trauma.
Area of Science:
- Ophthalmology
- Neurology
- Trauma Medicine
Background:
- Lightning strike injuries are rare but can cause significant systemic and ocular complications.
- Delayed ophthalmic evaluation is crucial for identifying progressive visual impairment following lightning exposure.
Observation:
- A 16-year-old female presented with blurred vision in the right eye two months after a lightning strike.
- Ophthalmic examination revealed a relative afferent pupillary defect, bilateral posterior subcapsular cataracts, macular holes, and peripheral retinal pigment epithelium (RPE) hyperpigmentation.
Findings:
- Fundus fluorescein angiography demonstrated increased choroidal transmission in the foveal region and RPE stippling, indicative of chorioretinal damage.
- The findings suggest a direct or indirect mechanism of lightning-induced damage to the retina and choroid.
Implications:
- This case underscores the potential for delayed and severe ocular manifestations after lightning strikes.
- Comprehensive ophthalmological assessment is recommended for all patients experiencing lightning-related trauma to detect and manage vision-threatening conditions.
Related Concept Videos
01:22Photoreceptors and Visual Pathways
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, whereas...
01:25Glaucoma: 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...
01:28Angle Closure Glaucoma: Treatment
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...