Blogs - Page 25 of 34

Light

Post author:Arsalan Mudassar
Post published:December 7, 2021
Post category:Optics & Refraction
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This is a fact that we cannot see any object in a perfectly dark room conclusively establishes the truth that light is necessary for the purpose of vision. Nature has…

Tear Film & Contact Lens Interaction

Post author:Dwiparna Chatterjee
Post published:December 6, 2021
Post category:Contact Lens
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The precorneal tear film plays a major role in the maintenance of the functional integrity of the cornea. It protects, nourishes & lubricates the cornea. The cornea is made up…

DUOCHROME TEST

Post author:Sagata Saha
Post published:December 5, 2021
Post category:Clinical Optometry
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The initial Duchrome test, also known as the Bichrome test, consists of two directions, red and green. Color distortion, the basis of the experiment, occurs because different wavelengths of light…

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Subjective Refraction

Post author:Manisha Maity
Post published:December 4, 2021
Post category:Clinical Optometry
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There are two methods of evaluating the refractive error of an eye: Objective refraction, (usually retinoscopy) where the result depends purely on the examiner's judgment to determine the optimum optical…

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Auto refractometry

Post author:Sanglap Ghosh
Post published:December 3, 2021
Post category:Clinical Optometry
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In this modern era of science and technology, when everything is controlled by computerized automated machines. Then why refraction is remained from that list although as an Optometrist we will…

Retinoscopy

Post author:Shahana Parveen
Post published:December 2, 2021
Post category:Clinical Optometry
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WHAT IS RETINOSCOPY?Retinoscopy is a technique to objectively determine the refractive error of the eye. (farsighted, nearsighted, astigmatism) and the need for glasses. The test can be quick, easy, reliably…

Application of Polarized light

Post author:Sanglap Ghosh
Post published:November 22, 2021
Post category:Optics & Refraction
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Light is a form of energy or a composed of particles of photons. The photon Particles are actually massless bundles of concentrated electro magnetic energy that are travels in a…

Transmission and Absorption

Post author:Riyanka Mondal
Post published:November 21, 2021
Post category:Optics & Refraction
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The transmission of Light is defined as the moving of the electromagnetic waves through a material. Visible light is the cause we are able to see anything at all. Transmission…

PHOTOELECTRIC EFFECT

Post author:Priti Chandra Halder
Post published:November 20, 2021
Post category:Optics & Refraction
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Photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons…

Chromatic Abberation

Post author:Md Taj
Post published:November 19, 2021
Post category:Optics & Refraction
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Hii…myself Chitu ,the badass 😎😎creature on earth ,Any doubt ?? That was my fb profile picture …I wanna update this on Insta also . But it seems too ‘colourful’ .…