Color Blindness Is An Inherited Defect Of Vision, Resulting In A Person's Inability To Distinguish Between Specific Colors.partial Color Blindness Is More Common Than Total Color Blindness, In Which A Person Sees Everything As Shades Of Gray(grey). The Most Common Form Of Partialcolor Blindness Leads To Inability Todistinguish Between Red And Green And Rarely Between Blue And Yellow.color Blindness Is A Fairly Common Conditionwhich Occurs More In Men Than Women, But It Is Rarely A Serious Disadvantage To Those Affected.approximately One In 20 Men And One In 200 Women Are Affected .some Studies Suggest That About Eight Percent Of The World's Male Population And Less Than One Percent Of Female Population Are Affected .many People Are Unaware They Are Color Blind Until Their Eyes Have Been Tested .the Retina Compromises Two Types Of Photoreceptors , Rods And Cones. Although The Rods Are More Numerous, Some 120 Million, And Are More Sensitive Than The Cones, They Are Not How-ever, Sensitive To Color. Rods Are Responsible For Vision At Low Light Levels(scotopic Vision) And They Do Not Meditate Color Vision And Have A Low Spatial Acuity The Six Or Seven Million Cones That Provide The Eye's Color Sensitivity Are Much More Concentrated In The Central Yellow Spot Known As The Macula.being Active At Higher Light Levels (photopic Vision) Cones Are Capable Of Color Vision And Are Responsible For High Spatial Acuity. In Simple Terms It May Be Said That Cones Require Brighter Light To Function Than Rods.red ,green And Have Their Corresponding Wavelengths . Red Wavelengths Are Longest, Followed By Green Wavelengths (medium) And Blue Color Is Made Up Of Shorter Wavelengths .they Are Red , Blue And Green Cones Which Are Sensitive To Those Colors And Combinations Of Them. If The Cones Do Not Work Properly Or If There Is No Right Combination, The Brain Does Not Get The Right Message About The Colors You Are Seeing.the Visible Colors From Shortest To Longest Wavelength Are Violet, Blue , Green , Yellow , Orange And Red.the Visible Red Light Having A Wavelength Of About 650 Nanometers Is Responsible For The Presence Of Red Or Orange Color At Sunrise And Sunset, Because The Wavelengths Associated With These Colors Are Less Efficiently Scattered By The Atmosphere Than The Shorter Wavelength Colors Such As Blue Or Purple.the Visible Green Light Having A Wavelength Of About 510 Nm Makes The Grass Appear Green Because All The Colors In The Visible Part Of Spectrum Are Absorbed Into The Leaves Of The Grass Appears Greenthe Visible Blue Light Having A Wavelength Of About 475 Nm Are Scattered More Efficiently By The Molecules In The Atmosphere Which Cause The Sky To Appear Blue.people Who Are Born Blind Do Not See Images In Dreams, But Have Dreams Vivid Involving Their Other Senses Of Sound, Smell, Touch And Emotion.color Blindness Caused By A Disease Of The Retina Or Optic Nerve Is Progressive And Associated With A General Deterioration Of Vision, Unlike Inherited Variety Where The Ability To See Detail Is Unaffected And The Condition Never Worsen.it Is Tested With Ishihara Chart Normally Their Are Means Of Testing Colour Blindness. Please Share============== S.s.venkateshwar, Andaman And Nicobar Islands

Eye Care Is Especially Important For People With Diabetes Because They Are At Increased Risk Of Developing Eye Complications From The Disease. All People With Diabetes Should Take Precautions To Help Reduce Their Risk Of Developing Eye Problems. Here Are Some Eye Care Tips. Maintain Control Of Your Blood Glucose Levels. Keep Your Blood Pressure In Control. High Blood Pressure By Itself Can Lead To Eye Disease, So If You Have High Blood Pressure As Well As Diabetes, It Is Especially Important That You Take Steps To Control Both Conditions. Get Your Blood Cholesterol Levels Under Control. Eat A Healthy Diet. Avoid Smoking. Exercise Regularly. Schedule Regular Appointments With Your Eye Doctor So That Any Eye Problem Can Be Detected Early And Treated.

Cholesterol Is Necessary For The Growth Of A Human Body, In Today's Society Cholesterol Is Generally Misunderstood And The Impacts Of It Are Underestimated. Cholesterol Can Lead To Disturbing Health Problems If It Is Not Controlled Correctly. It Is Imperative, When Selecting A Diet Or Making Lifestyle Choices, To Distinguish Between The Various Kinds Of Cholesterol. Hdl Cholesterol Is Generally Thought To Be The Superior Type Of Cholesterol. It Is Accountable For Many Significant Physical Functions As Well As The Preservation Of Cell Walls. Ldl Cholesterol, Or Low-density, Is The Bad Type Of Cholesterol. An Excess Of Ldl Cholesterol In The Human Body Can Bring About Cardiovascular Disease, Heart Attacks And Even Stroke. If Your Family Has A History Of Heart Problems, It's Imperative Not Only To Supervise Your Cholesterol Intake, But Also To Get Regular Cholesterol Readings From Your Healthcare Professional. What Are Normal Cholesterol Readings Cholesterol Readings Normally Comprise Of An Ldl Cholesterol Reading, An Hdl Cholesterol Reading And A Total Cholesterol Reading. You Might Impulsively Be Inclined To Get A Whole Cholesterol Reading, But It Actually Isn't The Most Significant Number. Be Sure To Keep Your Eyes On The Whole Picture. In General, You Want Your Whole Cholesterol To Stay Under 200. A Borderline Analysis May Be As High As The 230s, But Anything Above 240 Should Indicate Some Grave Red Flags. Ldl Cholesterol Ought To If Possible Remain Below 130. If It Strays Into The 160s, You'll Want To Begin Making Some Fairly Major Nutritional Changes. Lastly, Hdl Cholesterol Should Stay Above 45. Anything Below 40 Should Give You Concern. As A Precaution Normal Cholesterol Readings Should Be Performed Regularly By Your Doctor. In Between Visits To Your Healthcare Professional, There Are A Number Of Things That You Can Do Yourself To Keep Bad Cholesterol At Bay. Choose A Balanced Diet That Includes A Good Amount Of Protein, In The Form Of Fish And Dark Meat, And Be Sure To Get Four To Six Servings Of Fruits And Vegetables Every Day. Keep Away From Foods That Have A Lot Of Fat, As They Are Inclined To Raise Blood Cholesterol Levels. When All Is Said And Done, Cholesterol Is Nothing To Get Panicked About. The Best Solution For High Cholesterol Truly Is Common Sense. Be Reasonable In The Foods You Eat, And You'll Most Likely Never Have To Worry About It.dr. Sumit Dubeynew Delhi