Feb
29
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
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Aug
17
International Seminar On 'glomerular Diseases' Being Organized At Muljibhai Patel Urological Hospital, Nadiad, On 19-20 August 2011 Kidney Diseases Have Attained Epidemic Proportion All Over The World. End Stage Renal (kidney) Disease (esrd) Affects As Much As 1.8% Of Our Population And About 17% Are At A Risk Of Developing Kidney Diseases. Treatment Of Esrd Is Beyond The Means Of Common Man Even In Advanced Rich Countries. Glomerular Disease Contributes To 25% Of Esrd Patients. These Are Treatable Diseases And Can Be Prevented In Several Situations. Prof. John Feehally, President, International Society Of Nephrology, Will Be The Main Speaker In This Two Day Seminar. Several Reputed Teachers In Nephrology From All Across India Will Also Be Deliberating As A Faculty. The Seminar Will Be Attended By 150 Nephrology Professionals Consisting Of Nephrologists And Postgraduate Students In Nephrology. This Seminar Is Expected To Give A Boost In Understanding Of Glomerular Disease, It's Treatment And Cutting Edge Research In This Field In Our Country. Joseph@mpuh.org
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Apr
17
Discover The Secrets To Become Fertile Dr Paras Shah Chief Consultant Sexologist & Fertility Specialist Sal Hospital Rajasthan Hospitalwww.s4sq.com "so, When Are You Planning To Have A Baby?" This Is The Commonest Question Most Newly Married Couples In India Are Asked - Sometimes Even As Soon As They Have Returned From The Honeymoon! There Is A Lot Of Pressure On Couples To Have A Baby, Especially In Traditional Families, Where The Wife's Role Is Still Seen To Be One Of Perpetuating The Family Name By Producing Heirs. Many Couples Still Naively Expect They Will Get Pregnant The Very First Month They Try (the Result Of Watching Too Many Hindi Films, Perhaps!) And Are Concerned When A Pregnancy Does Not Occur. They Go Through A Brief Interlude Of Doubt And Concern When They Do Not Achieve Pregnancy The Very First Month They Try And Start Wondering About Their Fertility. Like A Surprising Number Of Couples These Days You've Been Hit With A Bolt Out Of The Blue... You're Infertile. Whether You're Newly Diagnosed Or Have Been Dealing With The Discovery For A While Now, What You Learn Here Will Make All The Difference In Whether You Ever Hear Your Own Child Call You "dad Or Mummy". Before Worrying, Remember That In A Single Menstrual Cycle, The Chance Of A Perfectly Normal Couple Achieving A Successful Pregnancy Is Only About 25%, Even If They Have Sex Every Single Day. Getting Pregnant Is A Game Of Odds - It's A Bit Like Playing Russian Roulette And It's Impossible To Predict When An Individual Couple Will Get Pregnant! However, Over A Period Of A Year, The Chance Of A Successful Pregnancy Is Between 80 And 90%, So That 7 Out Of 8 Couples Will Be Pregnant Within A Year. These Are The Normal "fertile" Couples - And The Rest Are "labeled" Infertile - The Medical Text Book Definition Of Infertility Being The Inability To Conceive Even After Trying For A Year. Like More Than Ten Million Other Indians, Rakesh And Jolly Desperately Wanted A Baby But Couldn't Seem To Conceive. After A Consultation, They Were Sent Home With Doctor's Orders: Have Sex When Jolly Was Most Fertile, And Have It Often. While That May Sound Like A Dream Come True, Infertile Couples Like The Priya Say It Can Be Stressful. "i Didn't Want To Be One Of Those Women Tapping On Her Watch, Saying 'now' At The Bedroom Door," Says Jolly, "so I Tried To Be Seductive In Creative Ways." They Both Put More Emphasis On Foreplay, For Instance, So They Didn't View Each Other Simply As An Egg Manufacturer And A Sperm-delivery Guy. "i'd Try To Think Of My Husband As A Sexy Man, Not Just The Guy Who Didn't Get Me Pregnant," Says Jolly. "sometimes, Before Intercourse, I'd Focus On Some Physical Aspect Of Him That I Particularly Adore, And That Would Turn Me On." Obviously, It Worked -- The Priyas' Daughter, Vidhi, Is Now Three. The Stopwatch Mentality Sex Can Become Tedious When They Have To Time Intercourse To Accommodate Numerous Lab Tests Or Maximize Their Chances Of Success. Spontaneity Can Be Replaced With Sex As A Compulsory Act Sex On A Schedule. Besides This Timetable Pressure, There Can Be Loss Of Self-esteem (if, For Instance, The Woman Feels Like A Failure For Not Becoming Pregnant) And The Financial Burden Of Fertility Treatments. But Through It All, There Are Ways To Minimize The Toll. How Women And Men Respond First, A Couple Should Understand That Each Of Them Tends To React A Bit Differently, Experts Say. "a Woman In This Situation May Feel Alienated From Her Body, So It May Be Hard For Her To Feel Sexual," Says Dr Archana Shah, Consultant Gynecologist And Fertility Specialist, Rajasthan Hospital, Ahmedabad. "she May Feel Like Little More Than A Set Of Ovaries And Even Begin Asking Herself, 'what's The Point Of Having Sex If I'm Not Getting Pregnant?' " Lack Of Desire, In Turn, Can Decrease Natural Lubrication, Making Sex Painful, Dr Archana Says, And Resulting In Even Less Sex. In Addition, A Man May Feel Like Nothing More Than A Sperm Donor And Become So Distanced That He Has Difficulty Achieving Erection Or Orgasm. Some Men Even Fake Orgasm To Get Sex Over With. Relieving The Pressure Both Partners Should Avoid Getting Into "performance" Mode. It Can Help To Realize That The Window Of Opportunity For Conception Stays Open Longer Than What Is Suggested In Movies, Where Characters Often Engage In Lunch-hour Sex In Order To Conceive While The Woman Is Fertile. Sperm Can Live In The Cervical Mucus For About Two Days Before Ovulation, According To Dr Archana. In General, Infertile Couples Are Advised To Have Intercourse Between 12th And 18th Day Of Her Period, If Possible Every Other Day. These Are The Fertile Days For Her. Simply Stated, The More Sex The Better! Couples Who Have Intercourse Less Frequently, Have A Diminished Chance Of Conceiving. I Tell All My Patients Its Much More Fun Making A Baby In Your Bed Room Than Coming To Me! (and Think Of All The Money Youll Be Saving Its Like Being Paid To Make Love To Your Wife !) Also Remember That You Cannot "store Up" Sperm, Which Means That There Is Really No Advantage To Abstaining From Sex If You Are Trying To Conceive. In This Case, More Is Better, And In Fact Studies Have Shown That Fresh Sperm Have A Better Chance Of Achieving A Pregnancy Than Sperm Which Have Been Stored Up For Many Days. However, Sex Shouldn't Be Confined To The Time Of Fertile Days. Unless Instructed Otherwise By Their Doctor, Couples Should Make Love Throughout The Month, Not Just When They Think They Might Conceive. That Might Help Them Separate Sex From Conception And Sex Will Become A Natural Part Of Life Again. Sex As Recreation, Not Just Procreation Thinking Of Sex Not As A Chore But As Fun, The Way It Used To Be, Can Help. "we Did Our Best To Have A Good Time -- Having Sex In Different Rooms, Different Positions And Go To Even Hill Station," Mahi Recalls. Couple Should Set A Romantic Mood With Things Like Shared Baths And Massages. It's Also A Good Time To Explore Sexual Fantasies And Erotica. If You Have Been Having Sexual Intercourse Two Or Three Times A Week At About The Time Of Ovulation, Without Any Form Of Birth Control For A Year Or More And Are Not Pregnant, You Meet The Definition Of Being Infertile. Pregnancy May Still Occur Spontaneously, But From A Statistical Point Of View, The Chances Are Decreasing And You May Now Want To Start Thinking About Seeking Medical Help. There Is No "right" Time To Do So And If It Is Causing You Anxiety And Worry, Then You Should Consult A Doctor. Even Though You May Be Embarrassed And Feel That You Are The Only Ones In The World With The Problem, You Are Not Alone. Many Couples Experience Infertility And Most Of Them Can Be Helped. Unfortunately, While Infertility Is Always An Important Problem, It Is Usually Never An Urgent One. This Often Means That Couples Keep On Putting Off Going To The Doctor. "we'll Take Care Of It Next Month". Tragically, Many Find That Time Flies, And Before They Realize It, Their Chances Of Getting Pregnant Have Started To Decline, Even Before They Have Had A Chance To Take Treatment Properly. Set Your Priorities, So That You Have Peace Of Mind That You Tried Your Best. After All, If You Don't Take Care Of Your Own Infertility Problem, Who Will ? Kicking Yourself When You Are 40 Years Old For Failing To Take Treatment When You Were Younger Will Not Help. Remember That Everything In Life Comes Back, Except For Time! Staying Positive And Looking Ahead To The Day Would Hold A Brand-new Family Member In Your Arms.
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