Related Experiment Video
Updated: Mar 9, 2026
10:14
Author Spotlight: Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
Published on: May 26, 2023
4.3K
Pseudoduplication of the optic disc in moderate myopia
Zeynep Eylül Ercan1, Aylin Karalezli2, Gokcen Coban3
1Department of Ophthalmology, Baskent University School of Medicine, Ankara, Turkey.
Summary
This study presents a case of acquired optic disc pseudoduplication in a patient without pathological myopia. This finding suggests that optic disc pseudoduplication can occur in all myopic patients, not just those with pathological myopia.
Area of Science:
- Ophthalmology
- Medical Imaging
- Retinal Diseases
Background:
- Optic disc pseudoduplication is typically associated with pathological myopia or colobomas.
- Acquired optic disc pseudoduplication can present diagnostic challenges.
Purpose of the Study:
- To report a case of optic disc pseudoduplication in a patient without pathological myopia.
- To suggest that acquired optic disc pseudoduplication may occur in a broader range of myopic patients.
Main Methods:
- Case report of a 79-year-old woman with decreased vision.
- Ophthalmological examination including fundus fluorescein angiography.
- Magnetic resonance imaging (MRI) scan of the orbit.
Main Results:
- The patient exhibited macular drusen, subretinal hemorrhage, and inferior optic disc pseudoduplication.
- The patient's axial length did not meet criteria for pathological myopia.
- No pathological fundus lesions typical of elongated sclera were observed.
Conclusions:
- Acquired optic disc pseudoduplication can occur in myopic patients without pathological myopia.
- The differential diagnosis for optic disc pseudoduplication should include conditions beyond pathological myopia.
Related Concept Videos
01:16Focusing of Light in the Eye
6.9K
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...
6.9K
01:20Anatomy of the Eyeball
11.1K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
11.1K
01:25Glaucoma: 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
01:22Photoreceptors and Visual Pathways
10.5K
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,...
10.5K