Measurement Of Light
LIGHT : Light is electromagnetic radiation that can be detected by the human eye. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less…
LASER
Laser is an acronym for light amplification by stimulated emission of radiation. In the most simplified sequence,an energy source excites the atoms in the active medium (a gas,solid or liquid)…
Components of the Eye’s optical system
The compound optical system of the eye may be divided into a corneal portion, including the tear layer that separates air from aqueous humour and a lens portion that separates…
Polarization
Polarization is a concept that includes light, radiation or magnetism that moves in a certain direction.In other words, polarization usually refers to human thinking, especially when two perspectives come out,…
Diffraction
Diffraction is the slight bending of light as it passes around the edge of an object. The amount of bending depends on the relative size of the wavelength of light…
Visible Light And Eye
The main purpose of the blog is to understand about the optical system of the eye and how light energy of the external environmental or from any kind of the…
LIGHT
Light is a form of energy whose interaction with retina gives the sensation of sight. Thus, light is the visible portion of the electromagnetic radiation spectrum. It lies between ultraviolet…
Treatment Of Presbyopia
Presbyopia is derived from the Greek word "presby" and "ops" meaning old-age sight. Presbyopia is age related loss of ability to sustain accommodation necessary for clear near vision or presbyopia…
Symptoms & sign of Presbyopia
Introduction: The word "Presbyopia" comes from Greek language which means "Elderly Vision". The Greek word presbys means " old man" and ops means "Eye". The disease was well known to…
Causes Of Presbyopia
ABSTRACT : Presbyopia is the age-related inevitable deterioration of the near vision which is experienced in over 80% of people aged 38-40 years and above. It is also known as…
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