I know that a baby at birth conveniently is able to see the distance from the mother's breast to her eyes. But how great is the sight at later ages, such as 2/4/6/8/12 months? I am thinking both distance, sharpness, and color. And when do the baby/child see as great as adults?

asked 17 Dec '09, 05:20

runaros's gravatar image

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One point the article in Pete's answer doesn't stress is that visual acuity isn't 20/20 until 5 years of age. A table I pulled from a text book years ago (Current Pediatric and Diagnostic Treatment published by Appleton & Lange) and use as my guideline for referring patients to the opthamologist is as follows: Minimal Acceptable Acuity at 3 years old is 20/40, at 4 years old is 20/30 and at 5 years old is 20/20. From a practical standpoint, prior to 4 years of age, it is very difficult to assess visual acuity.


answered 17 Dec '09, 19:51

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Dr Carey
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edited 18 Dec '09, 00:35

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Scott ♦♦

I thought 20/20 was just an expression - what does 20/40 etc all mean?

(18 Dec '09, 08:01) pete the pagan-gerbil

20/20 refers to "ideal" human vision, with you on the left, and the "ideal" person on the right. The detail you can see at 20 feet, the person with ideal vision can see at 20 feet. If you have 20/40 vision, then what they can see at 40 feet, you need to be as close as 20 feet to see all the detail. This is what that eyechart is all about that has the letters getting smaller and smaller: standing 20 feet away, someone with ideal vision can read the 20/20 line, while someone with 20/40 vision can only read the 20/40 line that is 2x bigger than the 20/20 line. http://www.eyecaretyler.com/2020.htm

(18 Dec '09, 23:15) Adam Davis

More on 20/20 vision and how it's measured here: http://en.wikipedia.org/wiki/Snellen_chart

(18 Dec '09, 23:22) Adam Davis

Over her first few months your baby's sight will sharpen, until at about six to eight months she'll see the world almost as well as an adult does.

From http://www.babycentre.co.uk/baby/development/sight/ - there's a bit more detail there about it.


answered 17 Dec '09, 16:54

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Asked: 17 Dec '09, 05:20

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Last updated: 18 Dec '09, 00:35