Related Experiment Video
Updated: Mar 30, 2026
05:23
Investigating Migraine-Like Behavior Using Light Aversion in Mice
Published on: August 11, 2021
4.6K
[An Unusual Cause of Increased Light Sensitivity].
1Augenheilkunde, Universitätsklinikum Tübingen.
Klinische Monatsblatter Fur Augenheilkunde
|November 18, 2015
Summary
Increased light sensitivity, or photophobia, can signal a serious chiasm lesion, not just anterior eye issues. Pituitary adenomas may present solely with photophobia, prompting ophthalmologist consultation.
Area of Science:
- Ophthalmology
- Neurology
- Endocrinology
Background:
- Photophobia commonly results from anterior segment eye conditions like cataracts or iritis.
- Pituitary adenomas are frequent intracranial tumors that can compress the optic chiasm.
Observation:
- This report details an atypical case where photophobia was the primary symptom of a chiasm-compressing lesion.
- Ophthalmologists may be the first to diagnose pituitary adenomas presenting with visual disturbances.
Findings:
- Pituitary adenomas can cause visual problems, including reduced vision, bitemporal hemianopsia, or isolated photophobia.
- In rare instances, increased light sensitivity is the sole presenting symptom of a chiasm lesion.
Implications:
- Consider optic chiasm compression in unexplained photophobia cases, especially those without anterior segment pathology.
- Early diagnosis of chiasm lesions via ophthalmological examination is crucial for timely intervention and management.
More Related Videos
Related Concept Videos
01:22Photoreceptors and Visual Pathways
11.0K
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,...
11.0K
01:25Glaucoma: Overview
1.7K
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...
1.7K
01:28Angle Closure Glaucoma: Treatment
1.6K
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...
1.6K
02:00Photoreceptors and Plant Responses to Light
29.0K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
29.0K