What are Zonules in the eye?
Ciliary zonules are a ring of fibrous structures anchoring the ciliary body with the lens of the eye. These are the structures that help to maintain the position of the lens in the optical path, and anchor muscles that change the shape of the lens to alter focus.
What is the function of zonules?
The Zonule of Zinn, or ciliary zonule, is the elaborate system of extracellular fibers that centers the lens in the eye. In humans, the fibers transmit forces that flatten the lens during the process of disaccommodation, thereby bringing distant objects into focus.
What do zonules look like?
Clinical appearance. The zonules of Zinn are difficult to visualize using a slit lamp, but may be seen with exceptional dilation of the pupil, or if a coloboma of the iris or a subluxation of the lens is present. The number of zonules present in a person appears to decrease with age.
What is a snowflake cataract?
Diabetic cataract, or “snowflake” cataract, consists of gray-white subcapsular opacities. This type of cataract is seen, in rare cases, in patients with uncontrolled diabetes mellitus.
What is lamellar cataract?
Lamellar or zonular cataract is a hereditary cataract that is transmitted in an autosomal dominant mode. The crystalline opacities are located at the level of the primary fibers in the embryonic nucleus. This cataract is usually bilateral and asymmetrical.
What is Fincham test?
Fincham’s test is done using the staenopic slit to differentiate the colored haloes caused by cataract (lenticular) from that caused by glaucoma (corneal). Staenopic slit is moved across patient’s eye while the patient looks at a bright point source of light which gives rise to halo.
What are the 4 types of cataract?
Cataract types include:
- Cataracts affecting the center of the lens (nuclear cataracts).
- Cataracts that affect the edges of the lens (cortical cataracts).
- Cataracts that affect the back of the lens (posterior subcapsular cataracts).
- Cataracts you’re born with (congenital cataracts).
What are weak zonules?
“In the normal eye, the zonules hold the lens (the cataract) in place. If the zonules are weak, that cataract tends to push forward and push the back of the iris toward the front of the eye.
What is a blue dot cataract?
Cerulean cataracts, also known as blue dot cataracts, are developmental cataracts characterized by blue and white opacifications scattered in the nucleus and cortex of the lens. Patients with cerulean cataracts are usually asymptomatic until 18-24 months of age and often do not need them removed before adulthood.
What is a lamellar cataract?
What is cataract and its types?
A cataract is a dense, cloudy area that forms in the lens of the eye. A cataract begins when proteins in the eye form clumps that prevent the lens from sending clear images to the retina. The retina works by converting the light that comes through the lens into signals.
What does it mean to have integrity in life?
Integrity is a foundational moral virtue, and the bedrock upon which good character is built. Acting with integrity means understanding, accepting, and choosing to live in accordance with one’s principles, which will include honesty, fairness, and decency.
What is the difference between integrity and honesty?
Most simply a synonym for honesty. But integrity is frequently connected with the more complicated notion of a wholeness or harmony of the self, associated with a proper conception of oneself as someone whose life would lose its unity, or be violated by doing various things.
What is wholeness of integrity?
The concept of integrity implies a wholeness, a comprehensive corpus of beliefs often referred to as a worldview. This concept of wholeness emphasizes honesty and authenticity, requiring that one act at all times in accordance with the individual’s chosen worldview.
What are examples of integrity in workplace?
Honesty and trust are central to integrity, as is consistency. Here are examples of integrity in action so you can recognize this important character trait in employees and coworkers. What Is Integrity? A person with integrity demonstrates sound moral and ethical principles and does the right thing, no matter who’s watching.