WebThis dystrophy is characterized by a bilateral accumulation of yellowish or pigmented material in a butterfly-like pattern at the level of the retinal pigment epithelium. This material is yellow, white, or black, and often accumulates in an usual configuration consisting of 3 to 5 'arms' or 'wings' that resemble the wings of a butterfly. WebNormally your cornea, the clear outer lens or "windshield" of the eye, has a dome shape, like a ball. Sometimes the structure isn’t strong enough to hold its round shape and it bulges...
Pattern Dystrophies - EyeWiki
WebRods and cones are two types of photoreceptors in the eye. Both are specialized nerves that convert light into neural impulses, but they differ in number, location, and function. Rods are more numerous, located in the periphery of the eye, and good for detecting light in general. Cones are concentrated near the fovea, responsible for color ... WebOct 25, 2024 · The cornea is the clear dome of tissue at the front of the eye. The cornea is the clear dome of tissue at the front of the eye. It connects smoothly to the sclera (the white part of the eye). The cornea refracts light through the lens below it, which allows the eye to process images. Injuries to the cornea can impair a person’s vision. gerber chart for baby food
Focal Choroidal Excavation (FCE) - EyeWiki
WebApr 5, 2024 · To diagnose keratoconus, your eye doctor will review your medical and family history and conduct an eye exam. Other tests also may be done to find out more about … Humans normally have three types of cones, usually designated L, M and S for long, medium and short wavelengths respectively. The first responds the most to light of the longer red wavelengths, peaking at about 560 nm. The majority of the human cones are of the long type. The second most common type responds the most to light of yellow to green medium-wavelength, peaking at 530 nm. … Keratoconus (ker-uh-toe-KOH-nus) occurs when your cornea — the clear, dome-shaped front surface of your eye — thins and gradually bulges outward into a cone shape. A cone-shaped cornea causes blurred vision and may cause sensitivity to light and glare. Keratoconus usually affects both eyes, though it often … See more Signs and symptoms of keratoconus may change as the disease progresses. They include: 1. Blurred or distorted vision 2. Increased sensitivity … See more These factors can increase your chances of developing keratoconus: 1. Having a family history of keratoconus 2. Rubbing your eyes vigorously … See more No one knows what causes keratoconus, although genetic and environmental factors are thought to be involved. Around 1 in 10 people with keratoconus also have a parent with the … See more In some situations, your cornea may swell quickly and cause sudden reduced vision and scarring of the cornea. This is caused by a condition in … See more gerber chair height toilet