Virtual Clinic v5

• Kuali Baba

  3 Dec 05, 22:20

  Is my colour vision deficiency a result of defective cones or a defective brain?
• alfagal

  3 Dec 05, 22:23

  wow interesting case,
  btw wat type of colour deficiency are you?
• Kuali Baba

  3 Dec 05, 22:26

  Originally posted by alfagal:

  wow interesting case,
  btw wat type of colour deficiency are you?

  Red-green
  
  Also I'm not able to adequately explain under which conditions I can't distinguish some colours clearly.
• renorenal

  3 Dec 05, 22:28

  Originally posted by Kuali Baba:

  Is my colour vision deficiency a result of defective cones or a defective brain?

  Color vision loss as far as I know is inherited dominantly from the parents, guys are often affected... If I am not wrong, the most common is the red-green color blindness giving the driver a very hard time interpreting the lights. Mostly, this is caused by the interpretation in the brain, you may lack the gene or may have been knocked on the head (the occipital lobe - i need alfagal to confirm the area of color vision, can't really recall) whereby the area of color vision representation is damaged.
  
  Cones only interpret the intensity of brightness rather than color...
• renorenal

  3 Dec 05, 22:30

  Originally posted by renorenal:

  Color vision loss as far as I know is inherited dominantly from the parents, guys are often affected... If I am not wrong, the most common is the red-green color blindness giving the driver a very hard time interpreting the lights. Mostly, this is caused by the interpretation in the brain, you may lack the gene or may have been knocked on the head (the occipital lobe - i need alfagal to confirm the area of color vision, can't really recall) whereby the area of color vision representation is damaged.
  
  Cones only interpret the intensity of brightness rather than color...

  Actually, it's sex linked inheritance and the defective gene is located in the Y chromosome, which is why only guys get it...
• alfagal

  3 Dec 05, 22:33

  Originally posted by renorenal:

  Cones only interpret the intensity of brightness rather than color...

  huh then how come got this guy who came up with the tri-colour theory, where different cones are sensitive to 3 different types of basic colours, red, blue and yellow?
  
• alfagal

  3 Dec 05, 22:37

  area that process colour vision is in the V2-V4 area...
• Kuali Baba

  3 Dec 05, 22:42

  Originally posted by renorenal:

  Actually, it's sex linked inheritance and the defective gene is located in the Y chromosome, which is why only guys get it...

  My mum, aunt and grandma have it. So did my grandpa...all from the same side of the family.
  
  I can still distinguish traffic lights but the red light appears yellowish-orange (I can't tell it apart from the amber one) and the green one appears white, with a tinge of green. It looks so different from the pictures in the Basic/Advanced Theory books.
• alfagal

  3 Dec 05, 22:43

  Originally posted by Kuali Baba:

  My mum, aunt grandma have it. So did my grandpa...all from the same side of the family.
  
  I can still distinguish traffic lights but the red light appears yellowish-orange (I can't tell it apart from the amber one) and the green one appears white, with a tinge of green. It looks so different from the pictures in the Basic/Advanced Theory books.

  v rare le...
• renorenal

  3 Dec 05, 22:54

  Originally posted by alfagal:

  huh then how come got this guy who came up with the tri-colour theory, where different cones are sensitive to 3 different types of basic colours, red, blue and yellow?
  

  I haven heard of the tri-color theory before... too advance ler...
• alfagal

  3 Dec 05, 23:03

  Originally posted by renorenal:

  I haven heard of the tri-color theory before... too advance ler...

  Helmholtz came up with it...
  
  but how sure are you that it has got to be brain defects?
  
  cos all i read about or rather 90% that i read about are the cones that causes colour deficientcy.
  eg for Kuali, his red n green cones will not be working, or not as effective as a trichromat..
• renorenal

  3 Dec 05, 23:25

  Originally posted by alfagal:

  Helmholtz came up with it...
  
  but how sure are you that it has got to be brain defects?
  
  cos all i read about or rather 90% that i read about are the cones that causes colour deficientcy.
  eg for Kuali, his red n green cones will not be working, or not as effective as a trichromat..

  could be that... but since i dinnanoe it could be due to the cones, so the other possibility is the brain... it's always easier to blame it on the brain...
• alfagal

  3 Dec 05, 23:29

  Originally posted by renorenal:

  could be that... but since i dinnanoe it could be due to the cones, so the other possibility is the brain... it's always easier to blame it on the brain...

  haha since e brain is more complicated right...
  
  tatz y kuali asked if its cones or brain defect...
  but if its from birth, you mean that e genes can cause a defect in the development of cortex?
  
  
• renorenal

  3 Dec 05, 23:33

  Originally posted by alfagal:

  haha since e brain is more complicated right...
  
  tatz y kuali asked if its cones or brain defect...
  but if its from birth, you mean that e genes can cause a defect in the development of cortex?
  
  

  I think more like for trauma lar... genes encode for almost anything from the head to toes, so it could be that too, but I am not very sure which genes it really encodes for. Could be the rods as well... Hmm... not very good with ophthalmology... only understand it better if the eye is damaged secondarily by other systemic diseases... (diabetes, hypertension, SLE, trauma or kidney problems)... other than that, i will reach out for my referral letter...
• alexkusu

  3 Dec 05, 23:34

  
  
  /must not bully kb
  
  *zips mouth*
• alfagal

  3 Dec 05, 23:36

  Originally posted by renorenal:

  I think more like for trauma lar... genes encode for almost anything from the head to toes, so it could be that too, but I am not very sure which genes it really encodes for. Could be the rods as well... Hmm... not very good with ophthalmology... only understand it better if the eye is damaged secondarily by other systemic diseases... (diabetes, hypertension, SLE, trauma or kidney problems)... other than that, i will reach out for my referral letter...

  tat was wat i was thinking lar..
  if brain defect, most prob is acquired colour deficientcy.
  
  rods: more of black n white, lines, edges and peripheral vision
  cones: colours, details and acute foveal vision.
  
  therefore, i will still think tat its more of cones defect that give rise to his colour deficiency...
• renorenal

  3 Dec 05, 23:40

  Originally posted by alfagal:

  tat was wat i was thinking lar..
  if brain defect, most prob is acquired colour deficientcy.
  
  rods: more of black n white, lines, edges and peripheral vision
  cones: colours, details and acute foveal vision.
  
  therefore, i will still think tat its more of cones defect that give rise to his colour deficiency...

  Errr... I dun dare to comment... knowledge insufficient...
• alfagal

  3 Dec 05, 23:58

  jus sharing, no worries..
• renorenal

  4 Dec 05, 00:00

  Originally posted by alfagal:

  jus sharing, no worries..

  I'm gonna collapse to bed now... have to wake up at 6... argh...
• ndmmxiaomayi

  4 Dec 05, 00:14

  Originally posted by renorenal:

  Actually, it's sex linked inheritance and the defective gene is located in the Y chromosome, which is why only guys get it...

  Girls may get it if got two defective genes in the X chromosome...........
  
  But that is rare. Haven't seen any cases of it. But heard that it happened overseas.
• alfagal

  4 Dec 05, 00:15

  Originally posted by ndmmxiaomayi:

  Girls may get it if got two defective genes in the X chromosome...........
  
  But that is rare. Haven't seen any cases of it. But heard that it happened overseas.

  yeah tatz another possibility
• gorby107

  4 Dec 05, 10:42

  Doctor
  
  Why I sometime wake up, my eyes will be blur one
  
  But after a while will be ok
  
  Another thing
  
  why sometime my eyes will be blur one, when doing things??
  
  Thank you
• renorenal

  4 Dec 05, 12:14

  Originally posted by gorby107:

  Doctor
  
  Why I sometime wake up, my eyes will be blur one
  
  But after a while will be ok
  
  Another thing
  
  why sometime my eyes will be blur one, when doing things??
  
  Thank you

  That's pretty normal, nothing to worry about... wanna get those lazy eyes checked up as well if you keep on finding the blurry vision while concentrating on doing certain things...
• SBS9828X

  4 Dec 05, 12:43

  Dear Doctors,
  
  Since last night, while watching the TV, i had pains on my left eye. Its not sore eyes but some sort of pain when being hit but no marks. The pain is like having ur eyes bitten by mosquitoe. Exact location is on the top-left eyelid. Pain had caused me lack of sleep.
• subarugal

  4 Dec 05, 12:56

  i have questions.
  1) Does multi vitamins cause heatiness ?
  
  2) Is the Multi Vitamin i am taking enough for my daily needs ?
  
  Tks for replying you can take ur time to do so.
  Muack ...
  
  Ingredients as:
  extracts and fractions of grown and processed alfalfa, watercress, parsley, spinach, carrots and acerola cherries, plus yeast n kelp, tricalcium phosphate, mixed tocopherois from veg.
  
  Vitamins
  Vit A - 1500mg
  Vit B1 - 2.3 mg
  Vit B2 - 2.6 mg
  Niacin - 20mg
  Panitothenic Acid - 10mg
  Vit B6 - 2 mg
  Vit B12 - 9mg
  Folic Acid - 0.4mg
  Vit C - 90mg
  Vit D - 10mg
  Vit E - 24.8mg
  
  Mineral
  calcium - 200mg
  Copper - 2mg
  Iodine - 150mg
  Iron - 18mg
  Maginesium - 100mg
  Phosphorus - 125mg
  Zinc - 15mg