Related Experiment Video
Updated: Aug 6, 2026

07:06
Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
Case report: pseudophakic dysphotopsia simulating Bagolini glasses
Eoin Guerin1, Stewart Armstrong
1St Pauls Eye Unit, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP. eoinguerin@hotmail.com
Abstract:
A case is reported of a 68-year-old patient who had undergone uneventful cataract surgery and intraocular lens implantation. She reported the perception of a binocular cross simulating that seen with Bagolini striated glasses, especially with streetlights at night. It is suggested that this phenomenon was caused by posterior capsular folds.
Related Concept Videos
Photoreceptors 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...
Glaucoma: 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...
Focusing of Light in the Eye
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...
