Sight - The Eye III Crossword Puzzle

QUESTIONS LIST:

• retinene : when any intensity of light strikes rhodopsin, it breaks down into opsin & this pigment.
• glaucoma : this vision defect refers to abnormally high pressure of fluid inside the eyeball.
• hypermetropia : this vision defect is often called farsightedness, & is caused by a shortened eyeball.
• myopia : this vision defect is often called nearsightedness, & is caused by a lengthened eyeball.
• opsin : this large protein molecule is one component of rhodopsin.
• astigmatism : this vision defect is an irregular curvature of the cornea or lens, resulting in the image not being focused on the fovea centralis resulting in blurred or distorted vision.
• cataracts : this vision defect occurs when the lens becomes opaque & prevents light from passing through.
• primary : each of the three types of opsin protein in cones is sensitive to one of the three _ colours of source light: red, blue & green.
• vitamin a : a derivative of this vitamin is one component of rhodopsin in rods & is also a component of cones.
• emmetropic : this term refers to normal vision.
• colour blindness : this vision defect occurs when one or more types of cones are defective.
• nyctalopia : this vision defect is also known as night blindness.
• bright : the pigments in cones can be reformed in this type of light conditions.
• strabismus : this vision defect is misalignment of the eyes is caused by weakness or stiffness in eye muscles & is often called being cross-eyed.