Functional Eye Model, with Changeable Lens

Functional Eye Model, with Changeable Lens

Marsoni

M251S

$42.90

Get it in 3 business days with 1 day shipping. Friday, May 29

Functional Eye Model, with Changeable LensAn excellent Eye Model type to study the functions of the human eye. With flexible lens, the model can focus an image on the retina, demonstrates far and short sight, and their corrections. Size: 145mm x 150mm x 185mm. Mounted on a base. Premium Quality: 100% Anatomically correct, this anatomy model is hand painted and assembled with the utmost attention to detail. Perfect for the doctor's office, anatomy classroom, or study aid. Designed for use in

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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We have a border collie and an Australian cattle dog. Both are obsessed with balls and love to play catch. They would destroy all tennis ball including ones for dogs within minutes. These have lasted over a year! They have some teeth marks but still work great! I have just bought a second set as they still tend to get lost from time to time.

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Reviewed in the United States on May 23, 2026

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Amazon Customer

Lowell, US

★★★★★ 5

These are worth the money!! BUY THEM!!

Pattern Name: 3 Large balls

These balls are amazing if you have a dog that likes to chew! We have 2 medium sized breeds that are heavy heavy chewers and they get so excited when we dig these out from under the couch or tv stand. Most "chew toys" have to find their way to the garbage within a few days. We've had these a little over 2 weeks now and they are holding up great. There are little teeth marks in them but no chunks ripped out and seem to be holding up great. They are a little squishy so I was worried they would get destroyed but nope. They are a little bigger than a tennis ball so I don't have to worry about them choking on them. JUST BUY THEM!!

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Reviewed in the United States on April 6, 2026

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Mare Bear

Phoenix, US

★★★★★ 5

Nice Ball

Pattern Name: 1 Large ball

Nice light, yet durable ball for my gs/pit mix. He's a year and a half and he plays hard. I really like this ball and I'd buy it again.

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Reviewed in the United States on May 7, 2026

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Amazon Customer

Whiting, US

★★★★★ 4

Bounces great

Pattern Name: 3 Large balls

My dog is ball crazy and she loves this ball. It is durable and lightweight.

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Reviewed in the United States on May 19, 2026

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Shane C.

Carnegie, US

★★★★★ 5

Safe for your dogs teeth

Pattern Name: 4 Medium balls

These balls are fantastic. They are better for our dogs teeth. Traditional tennis balls have a material that will shave down dogs teeth after prolonged use. These are safe for their teeth. Bounce incredibly high. Which our Aussie loves and the bright colors make them easy to find in the yard: I highly recommend these!

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Reviewed in the United States on May 11, 2026