Can SOMEONE please tell me WHAT exactly stigmatism is?!
Question: Can SOMEONE please tell me WHAT exactly stigmatism is!?
I asked this question in optical, but everyone must still be asleep and I am really concerned about this!.
I mean what's going on that the doctor told me yesterday that I need glasses cause I have a stigmatism!.Www@Enter-QA@Com
I mean what's going on that the doctor told me yesterday that I need glasses cause I have a stigmatism!.Www@Enter-QA@Com
Answers:
Astigmatism is when the cornea of the eye is shaped like a rugby ball rather than being spherical!. It causes the eye to have two focal points rather than one and can lead to strain and headaches if uncorrected!. Astigmatism is the 'Cylinder' value in a prescription!.
Around 70% of people who wear spectacles have astigmatism!. It can also be corrected with toric contact lenses and laser eye surgery!.
People with severe astigmatism may experience double vision if it not corrected!.Www@Enter-QA@Com
Around 70% of people who wear spectacles have astigmatism!. It can also be corrected with toric contact lenses and laser eye surgery!.
People with severe astigmatism may experience double vision if it not corrected!.Www@Enter-QA@Com
Astigmatism occurs when the front surface of your eye (cornea) or the lens, inside your eye, has a slightly different surface curvature in one direction from the other!. Instead of being even and smooth in all directions, the surface may have some areas that are flatter or steeper!. When the cornea has a distorted shape, you have corneal astigmatism!. When the lens is distorted, you have lenticular astigmatism!. Either type of astigmatism can cause blurred vision!.Www@Enter-QA@Com
try watching the movie "i know who killed me" starring lindsay lohan!.!.!. you'll understand stigmatism more!.!.!.!.
stigmatism refers to the image-formation property of an optical system which focuses a single point source in object space into a single point in image space!. Two such points are called a stigmatic pair of the optical system!. Many optical systems, even those exhibiting optical aberrations including astigmatism, have at least one stigmatic pair!. Stigmatism is applicable only in the approximation provided by geometric optics!. In reality, image formation is at best diffraction limited and point-like images are not possible!.Www@Enter-QA@Com
stigmatism refers to the image-formation property of an optical system which focuses a single point source in object space into a single point in image space!. Two such points are called a stigmatic pair of the optical system!. Many optical systems, even those exhibiting optical aberrations including astigmatism, have at least one stigmatic pair!. Stigmatism is applicable only in the approximation provided by geometric optics!. In reality, image formation is at best diffraction limited and point-like images are not possible!.Www@Enter-QA@Com
astigmatism is when ur eyes arent the usual circle shape!. i have an astigmatism, it just means that its a lil fuzzy in one eye because its not lined up right!. hope u understand what im trying to say hehe tc have a great wk =]Www@Enter-QA@Com
astigmatism!
its when u have easily irritable eyes, so u cant wear contacts unless u get the kind for astigmatismWww@Enter-QA@Com
its when u have easily irritable eyes, so u cant wear contacts unless u get the kind for astigmatismWww@Enter-QA@Com
ASTIGMATISM: In optics, astigmatism is when an optical system has different foci for rays that propagate in two perpendicular planes!. If an optical system with astigmatism is used to form an image of a cross, the vertical and horizontal lines will be in sharp focus at two different distances!. The term comes from the Greek α- (a-) meaning "without" and στ?γμα (stigma), "a mark, spot, puncture"!.[1]
There are two distinct forms of astigmatism!. The first is a third-order aberration, which occurs for objects (or parts of objects) away from the optical axis!. This form of aberration occurs even when the optical system is perfectly symmetrical!. This is often referred to as a "monochromatic aberration", because it occurs even for light of a single wavelength!. This terminology may be misleading, however, as the amount of aberration can vary strongly with wavelength in an optical system!.
The second form of astigmatism occurs when the optical system is not symmetric about the optical axis!. This may be by design (as in the case of a cylindrical lens), or due to manufacturing error in the surfaces of the components or misalignment of the components!. In this case, astigmatism is observed even for rays from on-axis object points!. This form of astigmatism is extremely important in ophthalmology, since the human eye often exhibits this aberration due to imperfections in the shape of the cornea or the lens!.
STIGMATA: Stigmata are bodily marks, sores, or sensations of pain in locations corresponding to the crucifixion wounds of Jesus!. The term originates from the line at the end of Saint Paul's Letter to the Galatians where he says, "I bear on my body the marks of Jesus," stigmata is the plural of the Greek word stigma meaning a mark or brand such as might have been used for identification of an animal or slave!. An individual bearing stigmata is referred to as a stigmatic!.
The causes of stigmata are the subject of considerable debate!. Some contend that they are miraculous, while others argue they are hoaxes or can be explained medically!. Stigmata are primarily associated with the Roman Catholic faith!. Many reported stigmatics are members of Catholic religious orders!. The majority of reported stigmatics are female!.[1]Www@Enter-QA@Com
There are two distinct forms of astigmatism!. The first is a third-order aberration, which occurs for objects (or parts of objects) away from the optical axis!. This form of aberration occurs even when the optical system is perfectly symmetrical!. This is often referred to as a "monochromatic aberration", because it occurs even for light of a single wavelength!. This terminology may be misleading, however, as the amount of aberration can vary strongly with wavelength in an optical system!.
The second form of astigmatism occurs when the optical system is not symmetric about the optical axis!. This may be by design (as in the case of a cylindrical lens), or due to manufacturing error in the surfaces of the components or misalignment of the components!. In this case, astigmatism is observed even for rays from on-axis object points!. This form of astigmatism is extremely important in ophthalmology, since the human eye often exhibits this aberration due to imperfections in the shape of the cornea or the lens!.
STIGMATA: Stigmata are bodily marks, sores, or sensations of pain in locations corresponding to the crucifixion wounds of Jesus!. The term originates from the line at the end of Saint Paul's Letter to the Galatians where he says, "I bear on my body the marks of Jesus," stigmata is the plural of the Greek word stigma meaning a mark or brand such as might have been used for identification of an animal or slave!. An individual bearing stigmata is referred to as a stigmatic!.
The causes of stigmata are the subject of considerable debate!. Some contend that they are miraculous, while others argue they are hoaxes or can be explained medically!. Stigmata are primarily associated with the Roman Catholic faith!. Many reported stigmatics are members of Catholic religious orders!. The majority of reported stigmatics are female!.[1]Www@Enter-QA@Com