astigmatism
Blurry vision condition
Astigmatism is a defect in the eye or a lens that prevents light rays from meeting at a single focal point, causing blurred or distorted vision.
In the eye, it typically results from irregular curvature of the cornea or lens: My astigmatism makes lights look streaky at night.
Corrective lenses or surgery can compensate for the distortion.
Corrective eyewear or tumblers
- contactsPeople you know professionally
- toricDoughnut-form geometry
- LASIKCorneal vision correction
- PRKLaser vision correction procedure
spectacles · lenses · prescription · implants · excimer
Wave bending between media
- topographyPhysical feature mapping
- retinoscopyObjective refraction measurement technique
- ophthalmoscopeDevice for viewing retinas
- diopterUnit of focal power
axis · cylinder · meridian · curvature · wavefront · screening
Eye's clear outer dome
- lensLight-focusing curved glass
- curvatureDeviation from flatness
- irregularDeviating from normal patterns
- meridianPole-to-pole great circle
steep · flat · oval · egg-shaped · spherical · crystalline · anterior · posterior
glasses
Corrective eyewear or tumblers
PRK · spectacles · lenses · prescription · implants · excimer
refraction
Wave bending between media
- topographyPhysical feature mapping
- retinoscopyObjective refraction measurement technique
- ophthalmoscopeDevice for viewing retinas
diopter · axis · cylinder · meridian · curvature · wavefront · screening
cornea
Eye's clear outer dome
- lensLight-focusing curved glass
- curvatureDeviation from flatness
- irregularDeviating from normal patterns
meridian · steep · flat · oval · egg-shaped · spherical · crystalline · anterior · posterior · epithelium
blurry
Indistinct, lacking definition
fuzzy · squinting · eyestrain · headaches · ghosting · smeared · streaky · halos · glare · shadowy
regular
Occurring at fixed intervals
- irregularDeviating from normal patterns
- cornealOf the eye's outer layer
- lenticularLens-shaped, doubly curved
myopic · hyperopic · compound · mixed · oblique · congenital · acquired · residual
- visionsharp, eye, visual perception, sight, eyes
- eye careeye doctor, optometrist, ophthalmologist, eye exam, glasses
- eye healthglaucoma, cataracts, myopia, hyperopia, conjunctivitis
- eye problemsblindness, cataracts, glaucoma, blurred vision, eye irritation
- vision problemsblindness, blurry vision, visual impairment, vision loss, sight loss
- ophthalmologyeye diseases, eye surgery, cornea, retina, iris
astigmatismstigmatism
Optical point convergence
perfect vision · 20/20 vision · clear sight · sharp focus · normal vision