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Saturday, October 9, 2021

Anatomical eyeball

This eye is part of a series of life-sized anatomical organs. This eye is to-scale and the pattern includes 2 possibilities - one which opens up at the back so you can see inside and one which doesn't.




Difficult:
Medium


You will need:
  • A 1mm crochet hook
  • A 0.8mm crochet hook
  • White #10 crochet cotton
  • Embroidery thread in dark pinky-red and a colour for the iris (I used green)
  • red sewing cotton
  • An embroidery needle
  • A glue gun and some glue
  • If you wish to make an eye that opens up you will also need red and dark blue embroidery thread
  • A pair of scissors
  • A clean metal spoon
If you want to find out more about how exactly the eye works, I would recommend watching this crash course video.


For the iris:
With a 1mm hook and 6 strands of embroidery thread ch5
Round 1: sc  in the first st, then make 6sc into the hole in the centre of the ring of chain sts (7sc)
Round 2: make 2sc in each st (14sc)
Fasten off neatly

For the Sclera (the whites of the eye):
Openable:
With a 1mm hook and white #10 crochet cotton ch18
Round 1: sc in the first chain st you made, sc in the following chain st, then make 2sc in the next chain st. (sc in the following 2 chain sts, make 2sc in the next chain st) twice, sc in the last 3 chain sts (23sc)
Round 2: sc, (sc4, make 2sc in the next st) 4 times, sc2 (26sc)
Round 3: sc6, make 2sc in the next st, sc12, make 2sc in the following st, sc6 (28sc)
Rounds 4 - 7: (4 rounds) sc in each st
Row 8: sc6, sc2tog, sc6. ch1, turn (13sc)
Row 9: bfsc2, bfsc2tog, bfsc5, bfsc2tog, bfsc2. ch1, turn (11sc)
Row 10: sc, sc2tog, sc, sc2tog, sc2, sc2tog, sc. ch1, turn (8sc)
Row 11: bfsc2tog, bfsc, bfsc2tog, bfsc, bfsc2tog. ch1, turn (5sc)
Row 12: sc2tog, sc, sc2tog (3sc)
Fasten off

With a 1mm hook and white #10 crochet cotton
Row 1: sc in the 2nd chains st from hook, then in the following chain sts: sc5, sc2tog, sc6. ch1, turn (13sc)
Row 2: bfsc2, bfsc2tog, bfsc5, bfsc2tog, bfsc2 (11sc)
Row 3: sc, sc2tog, sc, sc2tog, sc2, sc2tog, sc (8sc)
Row 4: bfsc2tog, bfsc, bfsc2tog, bfsc, bfsc2tog (5sc)
Row 5: sc2tog, sc, sc2tog(3sc)
Fasten off

You should now have a spherical section with a semi-circle cut out of it, along with a separate semi-circular shaped piece. Place the smaller section into the hole in the larger spherical section so that it lines up, then sew along half of the flat side of the smaller section to join it.


For the non-openable eye:
With a 1mm hook and white #10 crochet cotton ch18
Round 1: sc in the first chain st you made, sc in the following chain st, then make 2sc in the next chain st. (sc in the following 2 chain sts, make 2sc in the next chain st) twice, sc in the last 3 chain sts (23sc)
Round 2: sc, (sc4, make 2sc in the next st) 4 times, sc2 (26sc)
Round 3: sc6, make 2sc in the next st, sc12, make 2sc in the following st, sc6 (28sc)
Rounds 4 - 7: (4 rounds) sc in each st
Round 8: sc12, sc2tog, sc12, sc2tog (26sc)
Round 9: sc4, sc2tog, sc5, sc2tog, sc6, sc2tog, sc5, sc2tog, sc2 (22sc)
Round 10: sc, sc2tog, sc2, sc2tog, sc, sc2tog, sc, sc2tog, sc2, sc2tog, sc, sc2tog (16sc)
Round 11: sc2tog, sc, sc2tog twice, sc, sc2tog twice, sc, sc2tog, sc (10sc)
Round 12: sc2tog 5 times
Fasten off


For the retina:
For the non-openable eye:
You don't have to make this for the non-openable eye as it will be enclosed inside the scelera, but it will match the openable eye better if you're choosing to make one of each.

Using a 0.8mm hook and 3 strands of embroidery thread ch20
Round 1: sc in the first chain st you made, then sc in the next 2sts. Make 2sc in the next chain st. (sc3, make 2sc in the next chain st) 4 times (25sc)
Round 2: (sc4, make 2sc in the next st) 6 times (30sc)
Round 3: (sc5, make 2sc in the next st) 6 times (35sc)
Rounds 4 - 7: (4 rounds) Sc in each st
Round 8: Sc8, sc2tog, sc15, sc2tog, sc7 (33sc)
Round 9: Sc, (sc2tog, sc6) 4 times (29sc)
Round 10: Sc3, sc2tog, (Sc4, sc2tog) 4 times (24sc)
Round 11: (Sc2, sc2tog) 6 times (18sc)
Round 12: (Sc, sc2tog) 6 times (12sc)
Round 13: Sc2tog 6 times (6sc)
Fasten off

For the openable eye:
With a 0.8mm hook and 3 strands of embroidery thread ch20
Round 1: sc in the first chain st you made, then sc in the next 2sts. Make 2sc in the next chain st. (sc3, make 2sc in the next chain st) 4 times (25sc)
Round 2: (sc4, make 2sc in the next st) 6 times (30sc)
Round 3: (sc5, make 2sc in the next st) 6 times (35sc)
Rounds 4 - 7: (4 rounds) Sc in each st
Row 8: Sc8, sc2tog, sc15, sc2tog, sc7. ch1, turn (33sc)
Row 9: Sc, (sc2tog, sc6) twice. ch1, turn (15sc)
Row 10: Bfsc3, bfsc2tog, bfsc4, bfsc2tog, bfsc4. ch1, turn (13sc)
Row 11: (Sc2, sc2tog) 3 times, sc. ch1, turn (10sc)
Row 12: (Bfsc, bfsc2tog) 3 times, sc. ch1, turn (7sc)
Row 13: Sc2tog 3 times, sc (4sc)
Fasten off

Ch17
Row 1: sc2tog between the 2nd chain st from hook and the next chain st, sc in the next 6 chain sts, Sc2tog, sc6. ch1, turn (14sc)
Row 2: Bfsc2tog, bfsc4, bfsc2tog, bfsc4, bfsc2tog. ch1, turn (11sc)
Row 3: Sc, sc2tog, (sc2, sc2tog) twice, ch1, turn (8sc)
Row 4: Bfsc2tog, bfsc, bfsc2tog, bfsc, bfsc2tog. ch1, turn (5sc)
Row 5: Sc2tog, sc3tog (2sc)
Fasten off

Sew these 2 pieces together as you did before, lining up the smaller section inside the larger sphere and sewing along half of the larger edge. Make sure the the edge you sew along is opposite to the one sewn for the scelera (so that they match up when this retina section is turned inside out)

To make up:
For the retina:
If your eye is being made openable, use red and blue embroidery thread to sew veins onto the 'right side' of the crochet. This will later be turned so that the embroidery is on the inside and inserted into the eye.


Place the iris inside the eye. Sew in place around the front opening, and around the back opening for the openeable eye.




For the lens:
Get a clean spoon and use a glue gun to add a blob of glue to the curved surface. This should ideally be around 2cm in diameter. Once it is cool peel it off and insert it into the eye, so that it sits behind the hole in the front of the eye.







Sew the iris over this hole in front of the lens so that the wrong side is facing outwards.

Finally finish off by using red embroidery thread to add blood vessels to the outside of the scelera, as shown below.



That's all from this pattern, I hope you have enjoyed it! You are very welcome to sell finished products but I do ask that you don't re-post this pattern, or claim it or any of the images as your own. If you have any questions about this or any of my other patterns, please don't hesitate to contact me. You can leave a comment below, or message me on my Ravelry page, through the best way to contact me is through my Instagram page, where you can keep updated with all the projects I'm currently working on.

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Anatomical eyeball

This eye is part of a series of life-sized anatomical organs. This eye is to-scale and the pattern includes 2 possibilities - one which open...