Glare - Dr. Sanjay Dhawan

URL E-mail: Dr. Sanjay Dhawan MBBS, MS (Gold Medallist) DOGlareHigh beam of head-light of a on-coming car has blinding effect anddecreases visibility dangerously. A fielder in the outfield of a cricket matchmisses a crucial catch because of Glare from the flood lights or the one knows what is Glare and every one has experienced it too, butwhen asked to describe or define most are can be really troublesome in patients of cataract or after can be defined as the contrast lowering effect of stray lightin a visual scene. Glare forms a veil of luminance which reduces thecontrast and thus the visibility of a target is decreased. We cannot seeintensity differences efficiently in the presence of a high background oflight intensity. And the sensitivity to Glare is amplified as scattering incornea or lens Light Scatter in Normal EyesCornea30 % lens 70 %Aqueous & vitreous < 1 %Types of GlareGlare can be divided into two glareDiscomfort Glare refers to the sensation one experiences when theoverall illumination is too bright on a snow field under bright Glare refers to reduced visibility of a target due to thepresence of a light source elsewhere in the field.

GLARE Dr. Sanjay Dhawan MBBS, MS (Gold Medallist) DO URL http://sdhawan.com/ophthalmology/lens&cataract.pdf E-mail: sdhawan@sdhawan.com Causes of Glare

Tags:

  Large, Cataract, Lens, Sanjay, Sanjay dhawan, Dhawan, Glare dr

Information