Basics of Ophthalmology for Dental Students

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Which part of the eye is responsible for admitting light into the eye and serving as the main refractive surface?

Sclera

Iris

Retina

Cornea (correct)

Which structure forms the colored part of the eye and contains a central opening called the pupil?

Ciliary body

Choroid

Iris (correct)

Retina

What is the main function of the uveal tract in the eyeball?

Nutrition (correct)

Protection

Refractive surface

Vascularization

The size of the eyeball is approximately:

24 mm in diameter Signup and view all the answers

Which part of the outer coat of the eyeball is posterior, white, opaque, and tough?

Sclera Signup and view all the answers

In what direction can the eyeball move due to the presence of extraocular muscles?

In all directions Signup and view all the answers

Which part of the eye is pierced by the optic nerve?

Sclera Signup and view all the answers

What is the diameter of the cornea?

$11$ mm Signup and view all the answers

What is the main function of extraocular muscles?

To allow free movement of eyeball in all directions Signup and view all the answers

Which layer of the eyeball is vascular, pigmented, and nutritive?

Uveal tract Signup and view all the answers

What forms the main refractive surface of the eye?

Cornea Signup and view all the answers

What is the most common cause of iridocyclitis due to localized eye disease?

Corneal ulcers Signup and view all the answers

Which of the following is a symptom of iridocyclitis?

Blurring of vision Signup and view all the answers

What is the treatment for iridocyclitis?

Local corticosteroid eye drops and ointment Signup and view all the answers

What is the definition of optic neuritis?

Inflammation of the optic nerve Signup and view all the answers

Which condition is characterized by rapid diminution of vision and pain with ocular movements?

Papillitis Signup and view all the answers

What is the effect of oro-dental diseases on eye surgeries?

Lowering resistance of the eye to infections Signup and view all the answers

What is the definition of glaucoma?

Increase in intraocular pressure with optic nerve head affection Signup and view all the answers

What is a common symptom of acute primary glaucoma?

Colored haloes around lights Signup and view all the answers

What causes retinal detachment?

Separation of the neurosensory retina from the underlying choroid Signup and view all the answers

What is proptosis (exophthalmos)?

Protrusion of the eyeball forward Signup and view all the answers

What is squint (strabismus)?

Condition where the two visual axes are not parallel in any direction of gaze Signup and view all the answers

What causes orbital fractures?

Road traffic accidents, sports injuries, or civil violence Signup and view all the answers

Which muscle is responsible for raising the eyelid?

Levator palpebrae superioris Signup and view all the answers

What is the function of the choroid?

Highly pigmented and responsible for nutrition of adjacent structures Signup and view all the answers

Which part of the eye is most responsible for night vision?

Peripheral retina Signup and view all the answers

Which part of the eye is insensitive to light and is known as the 'blind spot'?

Optic disc Signup and view all the answers

Which structure is responsible for secreting the aqueous humor to control intraocular pressure?

Ciliary body Signup and view all the answers

What is the function of the lacrimal gland?

Produces tears to keep the ocular surface moist Signup and view all the answers

Which part of the bony orbit separates the roof from the lateral wall?

Superior orbital fissure Signup and view all the answers

What is the clinical presentation of orbital cellulitis?

Localized pain in the eye, proptosis, and limited eye movements Signup and view all the answers

What causes orbital cellulitis?

Infection from oral cavity or dental infections Signup and view all the answers

What is a typical symptom of phlyctenular kerato-conjunctivitis?

Ocular pain and light sensitivity Signup and view all the answers

Basics of Ophthalmology for Dental Students

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Questions and Answers

Which part of the eye is responsible for admitting light into the eye and serving as the main refractive surface?

Which structure forms the colored part of the eye and contains a central opening called the pupil?

What is the main function of the uveal tract in the eyeball?

The size of the eyeball is approximately:

Which part of the outer coat of the eyeball is posterior, white, opaque, and tough?

In what direction can the eyeball move due to the presence of extraocular muscles?

Which part of the eye is pierced by the optic nerve?

What is the diameter of the cornea?

What is the main function of extraocular muscles?

Which layer of the eyeball is vascular, pigmented, and nutritive?

What forms the main refractive surface of the eye?

What is the most common cause of iridocyclitis due to localized eye disease?

Which of the following is a symptom of iridocyclitis?

What is the treatment for iridocyclitis?

What is the definition of optic neuritis?

Which condition is characterized by rapid diminution of vision and pain with ocular movements?

What is the effect of oro-dental diseases on eye surgeries?

What is the definition of glaucoma?

What is a common symptom of acute primary glaucoma?

What causes retinal detachment?

What is proptosis (exophthalmos)?

What is squint (strabismus)?

What causes orbital fractures?

Which muscle is responsible for raising the eyelid?

What is the function of the choroid?

Which part of the eye is most responsible for night vision?

Which part of the eye is insensitive to light and is known as the 'blind spot'?

Which structure is responsible for secreting the aqueous humor to control intraocular pressure?

What is the function of the lacrimal gland?

Which part of the bony orbit separates the roof from the lateral wall?

What is the clinical presentation of orbital cellulitis?

What causes orbital cellulitis?

What is a typical symptom of phlyctenular kerato-conjunctivitis?

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