astigmatism

11 letters in word "astigmatism": A A G I I M M S S T T.

No anagrams for astigmatism found in this word list.

• Definitions:
• A refractive error caused by an irregular shape of the cornea (much like a football). Astigmatism is measured in terms of diopters, cylinder ...
• Condition caused by an irregularly shaped cornea, resulting in two focal points (blurred vision).
• a distortion of the image on the retina caused by irregularities in the cornea or lens.
• an optical defect in which refractive power is not uniform in all directions (meridians). Light rays entering the eye are bent unequally by different meridians, preventing formation of a sharp image focus on the retina. ...
• An optical aberration resulting from unequal magnification across different diameters.
• An eye condition that is the result of an irregular curvature in the eye. It affects the way the eye processes light and results in slightly blurred vision.
• The lens aberration in which horizontal and vertical lines are focused at two different points along the optical axis. The image is clearest somewhere between these two points.
• A warping of the curvature of the cornea so that light rays entering the eye do not meet in a single focal point, resulting in a distorted image.
• An irregular curvature of the cornea. If it is shaped more like a football rather than a basketball, light is not sharply focused on the retina. This results in blurry vision for both distance and near. LASIK can help correct this disorder.
• A condition in which blurred vision is caused by the cornea being shaped more like a football than spherical. Astigmatism may be compensated for through eyeglasses or contacts or can be corrected through refractive surgery.
• A condition where the cornea is irregularly shaped, causing distorted vision especially at near distances. Either glasses or toric contact lenses can correct astigmatism for most people. Small amounts of astigmatism may be correctable with regular GP contacts.
• lens aberration making a single point light source impossible to focus as a true point.
• results from an irregularly-shaped or football-shaped cornea which causes light to refract ineffectively. Vision irregularities depend on the exact nature of the astigmatism.
• Instead of the front surface of the eye being round it is more oblong. This prevents the light being focused in the right way and leads to blurring. Astigmatism can be secondary to the shape of the cornea or the lens, and is usually correctable with spectacle or contact lenses.
• A refractive error usually caused by toric (like a rugby ball) curvature of the front surface of the eye. Instead of being brought to a focus at one point at the back of the eye, light is focused in two lines at right angles to each other. ...
• A visual defect in which the unequal curvature of one or more refractive surfaces of the eye, usually the cornea, prevents light rays from focussing clearly at one point on the retina, resulting in blurred vision.
• is a condition marked by an irregularity in the curvature of the cornea. The cornea is responsible for most of the focusing of light entering the eyes. ...
• Astigmatism blurs vision at all distances because the optical parts of the eye (cornea and lens) do not focus light onto the retina clearly. This condition is quite common, and results from an unequal curve of the cornea when comparing the horizontal and vertical planes. ...
• A condition in which the cornea is "out of round". The surface is not spherical like the surface of a standard ball but more angular like the surface of a football.
• irregularities in the shape of the cornea resulting in difficulties focusing
• this is a form of vision problem that causes an image to be improperly reflected on the retina. This results from a misshapen cornea or lens.
• Astigmatism is a condition in which the cornea (or, much less often, the lens) is unevenly curved, causing light to be unevenly refracted. The result is that light may focus on the retina, but not on one focal point. This causes a blurry image, a condition known as astigmatism. ...
• (ua-stig´mua-tiz´´em) Unequal curvature of the refractive surfaces of the eye (cornea and/or lens), so that light entering the eye along certain meridians does not focus on the retina.
• A refractive error caused by an asymmetrically shaped cornea. Rather than being spherical in shape, the cornea is shaped like a football, causing light to come to several points of focus instead of meeting at a single point of focus. ...
• Defect which occurs when the strength of a lens is different in different planes. An astigmatic lens is asymmetrical and has a slightly different focal length for different rays. Astigmatism can be corrected in most optical systems by applying an equal and opposite asymmetry.
• (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
• 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.
• Astigmatism is an affliction of the eye, where vision is blurred by an irregularly shaped cornea. The cornea, instead of being shaped like a sphere, is more oval-like and reduces the cornea's ability to focus light. ...

• astigmatics ←
• astigmatically ←
• astigmatic ←
• astigmatism
• → astigmatisms
• → astigmia
• → astigmias