1						2
3
						4		5
		6
														7					8
9
																10
								11						12
13
																			14
													15
16
								17
							18
															19
								20
						21
					22

Across 1. The eye's __________ sits just behind the iris. 2. Every time we blink, our eyelids spread a layer of moisture over the __________ 4. usually caused by problems in the pigments of the cones in the retina. Most people who are _______________ can see some colors. 7. This is the loss of useful sight. 9. there's a problem with the curve of the cornea. This causes part of the eye's image to be blurry. 11. Behind the cornea is a watery fluid called the ______________ 13. middle layer that contains blood vessels that deliver oxygen and nutrients to the retina. 14. The colored circular membrane in the eye just behind the cornea is called the ___________________ 16. the outermost protective layer. 17. refers to inflammation (redness, pain, and swelling) of the conjunctiva. 18. The space in the center of the eyeball is filled with a clear jelly-like material called the _________________ 19. innermost of the three layers, lines the inside of the eyeball. 21. occurs when the incoming image is not focused on the retina, but behind it. 22. The retina then sends nerve signals through the back of the eye to the _____________

Down 1. ____________ glands in the upper outer corner of each eye socket produce tears. 2. contains the muscular structure in the eye that changes the shape of the eye's lens. 3. small, specialized area on the retina. The ___________ helps our eyes see fine details when we look directly at an object. 5. After they've done their job moistening the eyes, the tears flow into canals in the eyelids, which drain into the __________________ 6. muscles surround the eyeball in the skull. 8. occurs when the eye focuses the image of an object in front of the retina instead of directly on it. 10. The iris controls the amount of light entering the eye through the _____________________ 12. infection of one of the follicles from which the eyelashes grow. 15. clear mucous membrane that protects the eye from becoming dry 20. The eyeball sits in the eye socket (also called the ________)