What is shot silk retina?
What is shot silk retina?
n. The appearance in the retina of numerous, wavelike, opalescent reflexes similar to the light reflections appearing on certain types of silk; most commonly seen in children under the age of 10 and sometimes in teenagers.
Why shot silk appearance of retina?
The retina is shiny due to reflection of light, called as shot silk appearance. Reflex of retinal vessels may be accentuated simulating arteriosclerotic changes. Vessels may be tortuous and may show abnormal branching.
In which condition you can find shot silk appearance?
The appearance of numerous, wavelike, opalescent reflexes that can occur in the retinas of children under the age of 10 and sometimes in teenagers.
Which would occur if the retina is damaged?
Damage to the retina often leads to vision loss. Medical experts explain that when the retina is injured through disease or an accident, blood vessels are affected. The veins carry neurons between the optic nerve and the brain. When they are damaged, neurons die, and the brain doesn’t receive visual information.
When was shot silk invented?
A shot silk vestment of purple and yellow dating from about 698 is described in detail in a document written in about 1170, showing that the technique existed since at least the 7th century.
Is Hypermetropia a refractive error?
Hypermetropia (hyperopia, long-sightedness or far- sightedness) is a form of refractive error in which parallel rays of light coming from infinity are focused behind the light sensitive layer of the retina, when the eye is at rest.
What is difference between myopia and hypermetropia?
The difference between myopia and hyperopia is whether you have difficulty seeing up close or at a distance. Hyperopia (farsightedness) makes it hard to see things that are close, and Myopia (nearsightedness) makes it difficult to see things that are far away.
What causes hypermetropia?
This is a common condition that can occur at any age. However, because hypermetropia is caused by the eye being too short or the optical components of the eye not being strong enough, it is quite common for children to have small degrees of long-sightedness that they may grow out of over time as their eyes grow longer.
How hypermetropia is caused?
What are signs of retina problems?
Typical symptoms of a damaged retina include:
- Dim central vision.
- Distorted central vision.
- Straight lines that appear wavy.
- Spots in the central vision that may appear blurry or dark.
- Images that appear then disappear.
- Double Vision.
- Floaters.
- Flashing Lights.
Why is it called shot silk?
A “shot” is a single throw of the bobbin that carries the weft thread through the warp, and shot silk colours can be described as “[warp colour] shot with [weft colour].” The weaving technique can also be applied to other fibres such as cotton, linen, and synthetics.
