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Related to blurriness: condescension, plumping, so far, called off


lack of sharpness in an x-ray image, usually due to patient motion.


(blur) indistinctness, clouding, or fogging.
spectacle blur  the indistinct vision with spectacles occurring after removal of contact lenses, especially non–gas-permeable lenses; it is believed to result from chronic corneal hypoxia and edema.


1. Degradation of an image formed by an optical system as a result of lack of focusing, aberrations, diffusion of light, etc.
2. A pattern in which the border is indistinct. See lens flare; blurred vision.
blur back test See plus 1.00 D blur test.
blur circle A circular patch of light formed on the retina resulting from a point object whose image is focused either in front of, or behind the retina, or due to excessive aberrations of the optical system of the eye. The size of the blur circle increases with the distance of the ocular image from the retina and with the diameter of the pupil. Its diameter can be expressed in angular terms (in min arc) as
α = 3.48 ✕ ΧFd
where ΧF is the defocus (in dioptres) with respect to the object point, and d the pupil diameter (in mm) (Figs. B4 and B5). Example: An object at infinity is viewed by a 2 D uncorrected myope with a 4.0 mm pupil diameter, i.e. α = 3.48 ✕ 2 ✕ 4 = 28 min arc. Syn. circle of confusion; circle of diffusion. See aberration; depth of field.
plus 1.00D blur test See plus 1.00 D blur test.
blur point See blur point.
spectacle blur Reduction in visual acuity noticed with spectacles after removal of hard contact lenses (PMMA). This may be due to corneal oedema, alteration of the corneal index of refraction, surface distortion of the cornea, etc. Refitting the patient with gas permeable lenses usually relieves this symptom.
Fig. B4 Blur circle corresponding to an image formed in front of the retinaenlarge picture
Fig. B4 Blur circle corresponding to an image formed in front of the retina
Fig. B5 Effect of pupil size on the blur circle. O9 is the image of object O formed by the optics of the eyeenlarge picture
Fig. B5 Effect of pupil size on the blur circle. O9 is the image of object O formed by the optics of the eye


lack of clarity in the radiograph caused by movement of the x-ray tube, subject or film during exposure.

Patient discussion about blur

Q. My vision is blurry and I see zigzag lines, what is it from? Every now and again, usually after sitting a few hours in front of the computer or not sleeping enough at night, I start getting blurry vision. I see zigzag lines in front of my eyes and it can take sometimes an hour to go away. What is this from?

A. It sounds like you have a migraine. A migraine that comes with blurry vision and zigzags (an aura) is called a classic migraine. The aura of migraine typically lasts from 20 minutes to an hour. Some patients have prolonged aura symptoms that can last hours to days. The aura also typically ends before the headache itself begins. When migraine aura symptoms are prolonged or last into or through the headache phase these types of migraine are commonly referred to as complicated migraines.

Q. I have fibromyalgia and am having terrible vision problems...double, blurred, feel off blance.Is this common?

A. Blurry vision is not a usual symptom in fibromyalgia. If you are experiencing this on a permenant basis you should see a doctor- either a neurologist or an ophthalmologist to rule out other vision conditions that might be causing this.

Q. What are the sides effects of alcoholism beside dizziness and blur?

A. In the short term, excessive alcohol consumption may cause vomiting and metabolic disturbances, seizures and coma. In the long term, alcohol may damage the pancreas, liver and other organs, and expose to cancer of the mouth.

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References in periodicals archive ?
You can't photograph action without blurriness, you can't get that soft-background look, and camera phones are worthless in low light.
But there are some ways to work around blurriness, dark spots and other symptoms.
2008) present a review of research about the visualization of seismic risk and uncertainty and Pang (2008) finally discusses the issue of uncertainty associated to natural hazards data in detail and presents potential methods for visualizing uncertainty in natural hazards such as the application of blurriness, transparency, or fuzziness, the use of color hue, saturation, or value, the superimposition of a grid that is modified according to uncertainty values, the drawing of contour lines, the variation of the thickness, brightness, or connectedness of symbolization, the use of glyphs, histograms, or box plots, or the creation of complex 3D surfaces.
Due to the blurriness of the focus and the easy availability of the articles, it seems more a cherry-picking exercise, than a coherent and usable collection.
If the blurriness is caused by condensation outside the unit, that usually takes care of it.
Though the slight blurriness of Einstein's shoes might be dismissed as a lens defect, Bohr's shoes manifestly lack definite position and momentum.
The distorted coloration, the framing to fit a portrait format, and the low-resolution blurriness all demand that one take into account the circumstances of these images' production.
Venus rejoins you, and if there's been a sense of blurriness about what you should do about one complex involvement, this will help.
In many patients, symptoms include blurriness, stickiness and dryness; eyes often burn, sting or Itch.
The Note 4 offers better battery life and a camera with optical image stabilization that takes the blurriness out of photos.
The blurriness does prevent one from confirming if these really are from the "Call of Duty: Advanced Warfare" though, according to the Gameranx, this may be a way to sidestep any legal actions from Activision.
A 62 year-old Caucasian male with no prior medical history presented to the emergency department for sudden, painless blurriness of his left eye.