Ophthalmology & Optometry/Astigmatism
QUESTION: My son is 5 years & 8 months old. Although he doesn't complain of any eye problem, for an over all check-up we got his eye testing done for the first time. The doctor checked through various different ways including dilating, and found that he has power. After 2 days again he was checked for his correct power and the power prescribed by the doctor is:
For right eye:
Nil(SPH), +1.0(CYL), 80deg(AXIS), 6/9(VA)
For left eye:
-0.5(SPH), +1.75(CYL), 90deg(AXIS), 6/9(VA).
He has been told to wear the respective glasses throughout the day, specifically when in school, reading, doing home-work, watching TV. But not necessary if he's moving around or playing.
On asking the doctor, whether the power can be corrected fully if he wears regularly, the doctor says that with age, the + power can be corrected, but - power generally keeps increasing with age, so possibility is he may have to use glasses forever.
Can you please throw light on this observation for a second opinion? Also i want to know, isn't it too early to wear glasses. What i have been knowing is that the cornea muscles get stronger day by day for a child as he grows, so their eye-sight keep improving as they become toddler.
ANSWER: Dear Papiya,
This is true that (+)plus power generally reduces as the child grows and (-) minus power increases, but your son has cylindrical (ASTIGMATISM) prescription that might convert partially or fully into (-)minus with age.
He must wear glasses to avoid AMBLYOPIA (Lazy Eyes), though he already seem to have a bit of Amblyopia because his corrected vision is 6/9 , but you should not worry , his vision will improve gradually .
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QUESTION: Does this problem in children arise due to improper reading & writing habits ? Or any such haabitual problems?
Cause of Astigmatism is irregularity of cornea or crystalline lens of the eye. improper reading and writing habits have no significant role in development of Astigmatism but improper reading habits like reading from too close or reading while lying down causes eye strain.