Mother's milk helps prevent myopia - study

Discussion in 'Optometry Archives' started by Roman Bystrianyk, Jun 28, 2005.

  1. "Mother's milk helps prevent myopia - study", Reuters UK, June 28,

    Children who are breastfed are about fifty percent less likely to be
    short sighted, Singapore researchers said on Tuesday.

    Docosahexaenoi acid or DHA, a substance found in breast milk, could be
    the main element which improves early visual development in babies,
    resulting in more ordered eyeball growth which then reduces the
    development or severity of myopia.

    "We can recommend infant breastfeeding as a protective behavior that
    may be adopted by mothers to lower the probability of the development
    of myopia," said Dr Saw Seang Mei of the National University of
    Singapore, who headed the research.

    Myopia is the most common eye problem. It affects as much as 40 percent
    of the population in the United States and Europe but between 70 and 90
    percent of some Asian populations such as Singapore, Japan and Hong
    Kong, according to the American Academy of Family Physicians.

    Saw said the DHA is also important for the development of photoreceptor
    cells in the retina, which play a major role in whether children become

    Researchers studied 797 children aged between 10 to 12 years in
    Singapore as part of the survey. They were given medical tests and also
    had to answer a series of questions including the number of books they
    read per week.

    The study, led by the Singapore Eye Research Institute, found that the
    risk of myopia in a child that was breastfed is 0.6 times that of child
    that was not, even after taking into account of other factors.

    While genetic variation was seen to be the culprit of myopia among
    children, soaring rates of the condition have led more researchers to
    believe it is the rising watching of television, playing computers
    games and reading that is to blame.
    Roman Bystrianyk, Jun 28, 2005
  2. Roman Bystrianyk

    Neil Brooks Guest

    Dr. Christine Wildsoet, of Berkeley, would agree with you on the
    nightlight issue. Interesting paper by her and her fellows, titled
    "What do Animals tells us about Refractive Development in Humans?
    OR What do we understand about human myopia?"

    High hyperope. Sigh....
    Neil Brooks, Jun 28, 2005
  3. I haven't breast fed, but I doubt suckling infants look
    at their nurses faces. Wrong angles.
    I _have_ bottle fed my children, and can tell you there's
    no labels on any bottles outside of hospitals. Hardly any
    markings either from all the washing. I don't recall any
    eyes crossing, either.

    I don't rule out some environmental focussing difference.
    ISTR bottle fed babies suckle eyes closed.
    Quite possibly. What is infant night vision like? Many
    bedrooms often have sufficient external light so see somewhat.
    Car headlights playing on ceilings may also drive focus.

    -- Robert
    Robert Redelmeier, Jun 28, 2005
  4. Roman Bystrianyk

    Dr Judy Guest

    I believe that her opinion has since changed, due to further studies which
    showed no difference between myopia in night light and no night light using
    human children after parental myopia was controlled for. The speculation
    was that myopic parents, getting up in the night without glasses, are more
    likely to use night lights than non myopic parents. So the genetic risk
    showed up as a correlation between night light use and myopia

    Arch Ophthalmol. 2002 May;120(5):620-7.
    Near-work activity, night-lights, and myopia in the Singapore-China study.

    Saw SM, Zhang MZ, Hong RZ, Fu ZF, Pang MH, Tan DT.

    Department of Community, Occupational, and Family Medicine, National
    University of Singapore, 16 Medical Dr, Singapore 117597, Republic of

    OBJECTIVE: To investigate the relationship among near-work activity,
    night-lights, and myopia in schoolchildren in Singapore and Xiamen, China.
    METHOD: The refractive error and ocular dimensions of 957 Chinese
    schoolchildren aged 7 to 9 years in Singapore and Xiamen, China, were
    determined using cycloplegic autorefraction and A-scan ultrasound biometry.
    Information on near-work activity (number of books read per week, reading in
    hours per day) and night-light use before age 2 years was obtained.


    CONCLUSIONS: Reading (number of books per week) may be associated with
    higher myopia in Chinese schoolchildren. However, night-light use does not
    seem to be related to higher myopia.

    Br J Ophthalmol. 2001 May;85(5):527-8.
    Myopia and night lighting in children in Singapore.

    Saw SM, Wu HM, Hong CY, Chua WH, Chia KS, Tan D.

    Department of Community, Occupational and Family Medicine, National
    University of Singapore, Republic of Singapore.

    AIM: To examine the role of night time lighting and myopia in children in
    Singapore METHODS: A cross sectional study was conducted on 1001 children in
    two Singapore schools. Cycloplegic refraction and A-scan biometry
    measurements were made in both eyes. A detailed questionnaire was completed
    by the parents to obtain information on night time lighting, near work
    activity, educational and demographic factors. RESULTS: There was no
    difference in myopia prevalence rates in children exposed to night time
    light (33.1%) compared with children who slept in the dark (31.4%) before
    age 2. In addition, vitreous chamber depth was not related to night light (p
    = 0.58) before age 2. These results remained even after controlling for near
    work. CONCLUSION: Myopia is not associated with night light in Asian
    Dr Judy, Jun 28, 2005
  5. *Sigh*, 2 more near activity myopia causes, shot down mercilessly by
    science... Why won't those scientists leave us alone???

    w.stacy, o.d.

    p.s. on the breast feeding, I had it backwards. The mom looks at the
    child's face, not the other way 'round. The child is (quite naturally)
    looking at the breast, which is *way* up close...
    William Stacy, Jun 28, 2005
  6. Roman Bystrianyk

    Dan Abel Guest

    They look at a number of things. It depends some on age. I distinctly
    remember sitting next to my wife on the couch while she was nursing one of
    our kids. I must have been talking too much with my hands, because I
    caught the kids attention. He let loose of the nipple and turned to look
    at me. Once you start sucking, the milk comes out under pressure, and
    keeps coming. I got sprayed but good.

    ObGlasses: Yup, on the glasses and the beard. It doesn't just wipe off
    the glasses, because you get a big smear. If you don't get it off the
    beard, pretty soon all you can smell is sour milk.

    It's been a long time, but I remember lines and numbers on both glass and
    plastic bottles, to help in getting the right proportions for the formula.

    I remember mostly open, but some closed also.
    Dan Abel, Jun 28, 2005
  7. Roman Bystrianyk

    Rod Speed Guest

    The brats I've seen doing either dont focus on the source of the milk at all.
    Pity about when its asleep...
    Thats pretty rare.
    Rod Speed, Jun 30, 2005
  8. I just heard this on KGO
    CHINESEMALE(age16), Jun 30, 2005
  9. I just heard this on KGO 810 at about 1:30 PM in San Francisco on June
    30, 2005.
    CHINESEMALE(age16), Jun 30, 2005
  10. Roman Bystrianyk

    Rod Speed Guest

    Mangled it completely, actually.
    Sometimes they do, much more often they dont.
    Mostly they dont.
    You did manage to get that bit right.
    Rod Speed, Jun 30, 2005
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