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Which lenses should be used to correct the defect of astigmatism?
Astigmatism can be corrected with toric lenses. Toric lenses have different powers in different meridians to correct the varying degrees of astigmatism present in the eye. These lenses are designed to address the irregular curvature of the cornea typical in astigmatism.
The far point of myopia person is 85 cms in front of the eyes what is nature and power of the lens required to correct the vision?
The defect the person suffers from is myopia. 1/f=1/u+1/v 1/f=1/-85-1/infinity f=-85 cm =-0.85 m The power of the lens=1/f =1/-0.85 =-1.176 D Concave lens have negative focal length and are used for myopia. Thus the the lens that should be used to correct this defect is a concave lens of -1.176 D.
What defect of an eye can be corrected by using a cylindrical lens?
Astigmatism is a common eye condition that can be corrected by using a cylindrical lens. This lens helps to correct the irregular curvature of the cornea or lens in the eye, which causes distorted or blurred vision. By using a cylindrical lens, the light entering the eye can be properly focused to improve vision.
When the image of an object is brought into focus in front of a person's retina the defect is called?
Lens
What does cylinder measure in eye exams?
cornea. there is lens - spherical and cornea - cylindrical normally and has a flat surface, but if it's not so in aspecific angle it will blur vision (astigmatism) now we can check if there is such a defect and correct it by eyeglasses
What Progressive eye defect resulting in difficulty focusing and caused by loss of elasticity in the lens?
Hemianopia Presbyopia
Lens used for shortsightedness?
One uses a divergent lens to correct for shortsightedness.
What lens can correct a myopia?
Diverging Lens are use (reading glasses) to help correct the problem of myopia helping fix the focus which causes items far away to seem fuzy and blurry.
What is a sentence for concave lens?
A Concave lens is used to correct short- sightedness.
What type of lens is used to correct long sightedness?
Convex lens is used to correct long sightedness (hyperopia). This lens helps to converge the light rays entering the eye, allowing the image to focus correctly on the retina.
What type of lens is used to correct nearsightedness vison?
A concave lens is used to correct nearsightedness, also known as myopia. This type of lens diverges light rays before they reach the eye's lens, thus moving the focal point back to the retina for clearer vision.
Can a person have both myopia and hypermetropia?
it is possible for a person to have both myopia and hypermetropia(hyperopia).The defect can be corrected by using bifocal lens.
