I have been told by a friend that human eyes stay the same size all throught your life. So the eyes that were are born with are the same size as they are when you are an adult (with some minor differentiaiton). Is this true in anyway? Can someone shed any light on this for me please?? Thanx
2007-04-19 11:02:06 · 10 answers · asked by Laure 2 in Science & Mathematics ➔ Biology
YES, BUT JUST A LITTLE BIT.
You will need to know what is "ANTERO-POSTERRIOR LENGTH" in order to fully understand this.
The measure of choice for evaluating the size of the eyes is the antero-posterior length (the length from front to back), as it is the only optically significant dimension.
This length averages 17.3mm at birth,
This averages increase to 20mm at one year of age.
Then 22 mm at three years of age.
The eyes stop to grow between 8 and 13 years of age,
at the average length of 23mm
2007-04-19 11:22:03 · answer #1 · answered by The wizard 2 · 0⤊ 0⤋
Human Eye Growth
2016-10-31 06:31:38 · answer #2 · answered by balom 4 · 0⤊ 0⤋
Eyes do NOT stay the same size your whole life. But they do not grow at the same rate as the rest of you.
A newborn typically has eyes about 18 mm in diameter. An adult typically has eyes about 25 mm in diameter. That means from birth to maturation, the size of the eyes change by less than 50% (not zero!). (link 1)
On the other hand, a newborn is typically 50 cm tall while and adult is typically 174 cm tall. That is a change of 250%! (link 2)
So your eyes grow, but nowhere near as much as the rest of you. This is why children seem to have abnormally large eyes - they do, but just compared to adults.
2007-04-19 12:39:08 · answer #3 · answered by Doctor Why 7 · 0⤊ 0⤋
I am pretty sure this is a misconception, what about prem babies, their heads arent even big enough to hold two adult sized eyes, and am pretty sure my daughters eyes were not as big as mine at birth,
I am pretty sure that the actual fact is that its the iris (the coloured part of the eye) that stays the same size, if you think about it you can hardly see the white of the babies eyes as their iris seems to take all the space up
2007-04-19 11:13:34 · answer #4 · answered by Ktloop 3 · 0⤊ 0⤋
Is just one of the absurdities you hear from time to time: if that was true, adults who start needing glasses would have already needed them when they were newborn babies!
Eyes grow, of course.
What happens is it doesn't appear to be so remarkable, because the whole orbit grows at the same time, so they don't look bigger.
Defects in growth are what causes worsening in the vision in myopics, or the very appearance of presbitia.
2007-04-19 11:57:17 · answer #5 · answered by felipelotas1 3 · 0⤊ 0⤋
It's true. Disregarding minor changes in shape due to getting older the eyes will be the same size at birth as they will be at 100.
2007-04-19 11:06:12 · answer #6 · answered by Digital Haruspex 5 · 0⤊ 1⤋
eye growth
The average newborn’s eyeball is about 18 millimeters in diameter, from front to back (axial length); it grows slightly to a length of approximately 19½ millimeters as an infant; and it continues to grow gradually to a length of about 24-25 millimeters, or about 1 inch, in adulthood. (A ping-pong ball is about 1½ inch in diameter, which makes the average adult eyeball about 2/3 the size of a ping-pong ball.)
2007-04-19 11:06:05 · answer #7 · answered by VV 5 · 0⤊ 0⤋
Your friend is correct. Eyes are the only part of the human body that doesn't grow.
2007-04-19 11:05:01 · answer #8 · answered by Nate 3 · 0⤊ 2⤋
Yes its true - the same as your head apparently that stops growing when you are a kid. Thats why kids are funny looking with big heads and eyes. Urrggg!!!!
2007-04-19 11:05:33 · answer #9 · answered by nitenurse 3 · 0⤊ 2⤋
See above person who said they do grow.
2007-04-19 11:09:32 · answer #10 · answered by doctorevil64 4 · 0⤊ 0⤋