#1
What is the purpose of a tonometer in ophthalmology?
To measure intraocular pressure
ExplanationMeasures pressure within the eye to diagnose conditions like glaucoma.
#2
Which of the following eye conditions is characterized by clouding of the eye's natural lens?
Cataracts
ExplanationClouding of the lens leads to blurred vision, often due to aging.
#3
Which part of the eye controls the amount of light entering the eye?
Iris
ExplanationRegulates pupil size to adjust the amount of light reaching the retina.
#4
What does the abbreviation 'IOP' stand for in ophthalmology?
Intraocular Pressure
ExplanationPressure exerted by fluids within the eye, crucial for eye health.
#5
Which part of the eye is responsible for producing aqueous humor?
Ciliary body
ExplanationSecretes clear fluid that maintains eye pressure and nourishes nearby tissues.
#6
What is the medical term for nearsightedness?
Myopia
ExplanationInability to see distant objects clearly due to elongated eyeball or steep cornea.
#7
Which ophthalmic procedure corrects astigmatism by reshaping the cornea?
LASIK
ExplanationLaser surgery reshapes the cornea for improved vision without glasses.
#8
Which eye structure is responsible for converting light into electrical signals that the brain interprets as vision?
Retina
ExplanationContains photoreceptor cells that capture light and transmit signals to the brain.
#9
What is the medical term for the condition commonly known as 'lazy eye'?
Amblyopia
ExplanationReduces vision in one eye due to abnormal development during childhood.
#10
Which of the following eye conditions is caused by elevated pressure within the eye, leading to optic nerve damage?
Glaucoma
ExplanationDamage to optic nerve due to increased pressure can lead to vision loss.
#11
What is the term for the surgical removal of the vitreous humor from the eye?
Vitrectomy
ExplanationRemoves vitreous gel to treat conditions like retinal detachment.
#12
Which ophthalmic procedure involves the surgical reshaping of the cornea using a precise laser?
PRK (Photorefractive Keratectomy)
ExplanationReshapes cornea surface to correct vision, similar to LASIK but without creating a flap.
#13
Which ophthalmic procedure involves the implantation of an artificial lens to replace a natural lens affected by cataracts?
Intraocular lens implantation
ExplanationReplaces clouded lens with an artificial one to restore clear vision.
#14
Which ophthalmic procedure involves creating a small hole in the iris to relieve intraocular pressure?
Iridotomy
ExplanationImproves fluid drainage to relieve pressure, often used in glaucoma treatment.
#15
Which ophthalmic procedure involves the surgical removal of a cloudy lens and replacement with an artificial lens?
Cataract surgery
ExplanationRestores vision by removing the clouded lens and replacing it with a clear artificial one.