Lead Sulphide in Kohl Cures Eye diseases - PowerPoint PPT Presentation

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Lead Sulphide in Kohl Cures Eye diseases

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Title: Lead Sulphide in Kohl Cures Eye diseases


1
All about Kohl
2
Kohl
  • An Arabic word for eyeliner
  • In Hindi -Kajal
  • In Punjabi-Surma

3
Ingredients of Kohl
  • Arabic Kohl is made from Galena or Lead Sulfide
  • Ancient Egyptian called galena as Mestem
  • In Arabic its called Ithmid

4
Historical use
  • to keep the eyes cool and clean

5
  • provided relief from the glare of the sun.

6
  • for the prevention and treatment of eye diseases
    such as blepharitis

7
  • trachoma

8
  • chalazion

9
  • pterygium

10
  • cataract

11
  • conjunctivitis

12
  • ectropion

13
  • as well as for the prevention of recurrence of
    trichiasis

14
  •  which are common problems along the tropical
    and hot weather climate.

15
Kohl in Islam
  •  Prophet Muhammad (SAW) said, "The best of your
    Kohl is Ithmid, for it improves the eyesight and
    makes the eyelashes grow." Hasan, Saheeh ibn
    Maajah 3497.

16
  • "Ithmid is the best type of Kohl used for the
    eye, especially for old people whose eyesight has
    weakened." p.251 Eng trans. Medicine of the
    Prophet by Imam ibnul Qaiyum

17
  • In a study by (Li-Yun et al., 2008), researchers
    in China prepared thin films of lead sulphide on
    Indium Tin Oxide (ITO) substrate.
  • They found that lead sulphide absorbs UV light
    with increased deposition of voltage.

18
  • In a study published in Analytical Chemistry Jan
    15,2010 , stated
  • Based on the amount of lead compounds in the
    ancient makeup, a wearer's nitric oxide levels
    would have increased by 240 percent
  •  Nitric oxide roles include revving-up the immune
    system to help fight disease.

19
  • They said It's interesting to note how the
    ancient Egyptians understood the chemical nuances
    of lead.
  • "This conclusion seems amazing because today we
    focus only on the well-recognised toxicity of
    lead salts," it continues.

20
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21
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22
Comparison of the Solubility of Lead in Various
Materials and Its Bioavailability
  • The authors statedWhen compared with weak acid
    solubility, 14-16 times as much lead was
    extracted from lead oxide or lead acetate
    compared to lead sulfide.
  • Lead sulphide is not soluble

23
  • Lead acetate in hair dyes and lead carbonate in
    lipstick are widely used in cosmetics until today
  • Kohl lead sulphide has been used since ancient
    times and proven scientifically to be good for
    the eyes

24
  • For more information please click on the links
    provided in the description of this video

25
  • Thank you for watching!
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