Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Green Algae01:21

Green Algae

329
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
329
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

7.2K
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,...
7.2K
Glaucoma: Overview01:25

Glaucoma: Overview

1.0K
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...
1.0K
Color Vision01:24

Color Vision

1.0K
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
1.0K
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

906
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...
906

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Sterilization by plasma gas.

Ophthalmology·2001
Same author

Five year study of astigmatic stability after cataract surgery with intraocular lens implantation: comparison of wound sizes.

Journal of cataract and refractive surgery·2000
Same author

Clinical use for AC IOLs.

Ophthalmology·1995
Same author

Astigmatism after cataract surgery: nylon versus Mersilene. Five-year data.

Journal of cataract and refractive surgery·1995
Same author

Delayed onset of sympathetic ophthalmia.

Ophthalmic surgery·1994
Same author

Alcohol and cataract.

Archives of ophthalmology (Chicago, Ill. : 1960)·1993

Related Experiment Video

Updated: Nov 3, 2025

Author Spotlight: Unraveling the Molecular Mechanisms in PCO and Fibrosis Following Cataract Surgery
05:19

Author Spotlight: Unraveling the Molecular Mechanisms in PCO and Fibrosis Following Cataract Surgery

Published on: December 1, 2023

1.3K

Green cataract

R C Drews1

  • 1Washington University School of Medicine, St. Louis, Missouri.

Klinische Monatsblatter Fur Augenheilkunde
|November 1, 1994
PubMed
Summary

Green cataract is a distinct entity caused by intraocular hemorrhage blood pigments. This condition often leads to severe glaucoma and vision loss, making surgical intervention ineffective for vision restoration.

Area of Science:

  • Ophthalmology
  • Pathology

Background:

  • The term "green cataract" has historical references dating back to the 16th century.
  • Historical accounts noted that surgical intervention for green cataracts did not restore vision.

Observation:

  • Two cases presented with green cataract, vitreous hemorrhage, and end-stage rubeosis iridis with absolute glaucoma.
  • One patient underwent enucleation; lens examination revealed significant iron accumulation in the lens epithelium.

Findings:

  • Green cataract is characterized by the presence of blood pigments resulting from intraocular hemorrhage.
  • The condition is frequently associated with rubeosis iridis and absolute glaucoma.
  • Iron staining confirmed heavy iron deposition in the lens epithelium.

More Related Videos

Author Spotlight: Overcoming Anti-VEGF Resistance Through Advanced Vascular Morphology Assessment in Choroidal Neovascularization
05:14

Author Spotlight: Overcoming Anti-VEGF Resistance Through Advanced Vascular Morphology Assessment in Choroidal Neovascularization

Published on: August 11, 2023

1.3K
Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
04:59

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation

Published on: July 7, 2023

2.7K

Related Experiment Videos

Last Updated: Nov 3, 2025

Author Spotlight: Unraveling the Molecular Mechanisms in PCO and Fibrosis Following Cataract Surgery
05:19

Author Spotlight: Unraveling the Molecular Mechanisms in PCO and Fibrosis Following Cataract Surgery

Published on: December 1, 2023

1.3K
Author Spotlight: Overcoming Anti-VEGF Resistance Through Advanced Vascular Morphology Assessment in Choroidal Neovascularization
05:14

Author Spotlight: Overcoming Anti-VEGF Resistance Through Advanced Vascular Morphology Assessment in Choroidal Neovascularization

Published on: August 11, 2023

1.3K
Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
04:59

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation

Published on: July 7, 2023

2.7K

Implications:

  • Green cataract represents a distinct pathological entity.
  • The findings support historical observations regarding the poor visual prognosis after cataract surgery in these cases.
  • Understanding the etiology is crucial for managing patient expectations and treatment planning.