Related Experiment Video
Updated: Jul 9, 2025
13:26
Measuring Connectivity in the Primary Visual Pathway in Human Albinism Using Diffusion Tensor Imaging and Tractography
Published on: August 11, 2016
12.3K
Unilateral Congenital Lenticular Pigmentation
Yahya Al-Najmi1, Abdulrahman Alsaggaf1, Maram E A Abdalla Elsayed2
1Ophthalmology Department, Saggaf Eye Center, Jeddah, Saudi Arabia.
Case Reports in Ophthalmology
|November 30, 2023
Summary
Unilateral congenital lenticular pigmentation is a rare, benign eye condition. It presents as pigment deposits on the lens and does not require surgery, responding well to corrective lenses.
Area of Science:
- Ophthalmology
- Genetics
Background:
- Pigment dispersion syndrome involves pigment deposition in the eye, often affecting the lens, trabecular meshwork, and cornea.
- Anterior lens pigmentation can also be linked to intraocular inflammation, pseudoexfoliation syndrome, and medication use.
Observation:
- A 23-year-old female presented with mild blurred vision and sought refractive surgery.
- Slit-lamp examination revealed stellate pigment deposits on the anterior lens capsule of her right eye.
- Her left eye and posterior segments were normal, with no history of ocular inflammation or trauma.
Findings:
- The patient was diagnosed with unilateral congenital lenticular pigmentation.
- This condition is characterized by pigment deposits on the lens, distinct from pigment dispersion syndrome.
Implications:
- Congenital lenticular pigmentation is a rare, benign condition with good visual outcomes with optical correction.
- Recognizing this entity aids in differential diagnosis, preventing unnecessary concern for progressive disorders like pigmentary glaucoma.
More Related Videos
Related Concept Videos
01:22Photoreceptors 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
01:11Genetic Lingo
102.9K
Overview
102.9K
01:33Pleiotropy
40.5K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.5K