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#myopia #hypermetropia #presbyopia #eyes Follow us: https://www.instagram.com/7activestudio/ For more information: www.7activestudio.com [email protected] Contact: +91- 9700061777, 040-66564777 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use. DEFECTS OF VISION AND THEIR CORRECTION: The eye may gradually lose its power of accommodation. In such conditions, the person cannot see the objects distinctly and comfortably. The vision becomes blurred due to the refractive defects of the eye. There are mainly three common refractive defects of vision. These are 1.Myopia or near-sightedness, 2.Hypermetropia or farsightedness, and 3. Presbyopia. These defects can be corrected by the use of suitable spherical lenses. We discuss below these defects and their correction. Myopia: The light from a distant object arriving at the eye lens may get converged at a point in front of the retina in the vitreous body. This type of defect is called near sightedness or myopia. Let us observe these cases, and then you can understand the concept 'myopia'. In the case of normal eye, the light rays from the object fall on the eye and converge on the retina.In the case of myopic eye, the light rays from the object fall on the eye and focuses the light at a point in front of the retina in the vitreous body. The correction for myopia: To compensate this, we interpose a concave lens between the eye and the object, with the diverging effect desired to get the image focused on the retina. Hypermetropia: If the eye-lens focuses the incoming light at a point behind the retina, this defect is called far sightedness or hypermetropia. Let us observe these cases, and then you can understand the concept 'hypermetropia'.In the case of normal eye, the light rays from the object fall on the eye and converge on the retina.In the case of hypermetropic eye, the light rays from the object fall on the eye and focuses the incoming light at a point behind the retina. The correction for hypermetropic eye: A convergent lens is needed to compensate for the defect in vision. Presbyopia:What is presbyopia?Presbyopia is a common type of vision disorder that occurs as you age. It is often referred to as the aging eye condition. Presbyopia results in the inability to focus up close, a problem associated with refraction in the eye.How does presbyopia occur? Presbyopia happens naturally in people as they age. The eye is not able to focus light directly on to the retina due to the hardening of the natural lens. Aging also affects muscle fibers around the lens making it harder for the eye to focus on up close objects. The ineffective lens causes light to focus behind the retina, causing poor vision for objects that are up close. When you are younger, the lens of the eye is soft and flexible, allowing the tiny muscles inside the eye to easily reshape the lens to focus on close and distant objects. TAG's: astigmatism -1.00, astigmatism -2, cataracts, macular degeneration, myopia -1.5, vision correction, lasik vision correction, vision correction options, overnight vision correction,how much does lasik cost,how much does lasik cost, lasik eye surgery,myopia treatment, glaucoma, cataract surgery, astigmatism, presbyopia,lasik md, laser surgery, laser surgery for eyes, lazy eye surgery, corrective eye surgery, glaucoma symptoms, blurred vision.

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