Combining Forms Related to the Eye

Which combining form would you use when referring to the cornea?

• corne/o

• ir/o

• dacry/o

• phac/o

If a medical term involves the retina, which combining form is most appropriate?

• retin/o

• lacrim/o

• conjunctiv/o

• core/o

A patient is diagnosed with a condition ending in "-opia." What does this suffix most likely refer to?

• Vision

• Eyelid

• Cornea

• Tear duct

Given the combining forms "phac/o" and "phak/o," which part of the eye do they refer to?

• Lens

• Retina

• Iris

• Eyelid

If a doctor writes "irid/o" in a patient's chart, which part of the eye is being referenced?

• Iris

• Cornea

• Retina

• Eyelid

Which combining form would be most appropriate to use when discussing the conjunctiva?

• conjunctiv/o

• kerat/o

• lacrim/o

• ocul/o

Which combining form is related to the cornea and is often used in terms involving corneal diseases?

• kerat/o

• ir/o

• phac/o

• blephar/o

Which sense is considered our dominant sense?

• Hearing

• Taste

• Vision

• Smell

What percentage of the sensory receptors in our body are found in our eyes?

• 10%

• 25%

• 50%

• Over 70%

What is the main function of photoreceptors in our eyes?

• To produce tears

• To convert light into action potentials

• To change the color of the iris

• To control eye movement