KMU Past Paper Practice

Question:

A 32-year-old woman has a large upper-lid chalazion that has gradually enlarged over several weeks. She now reports mild blurring despite an otherwise normal ocular examination. Which effect of the lesion best explains this complaint?

Options:

Correct Answer: Mechanical pressure exerted on the globe

Explanation: A sufficiently large chalazion may mechanically press on and distort the globe, producing visual disturbance even though the lesion itself is confined to the eyelid.

Question:

A young adult develops a rapidly enlarging red eyelid swelling associated with marked tenderness. The involved gland contains inflammatory exudate and pus. Which pathological process is primarily responsible for the pain and redness?

Options:

Correct Answer: Acute suppurative inflammation with edema

Explanation: A hordeolum is an acute infective process. Vascular dilatation, inflammatory edema and pus formation account for its characteristic pain, redness and tenderness.

Question:

A 29-year-old woman has a typical chalazion that remains firm and cosmetically troublesome despite an adequate trial of warm compresses and lid hygiene. There are no suspicious malignant features. Which management option is most appropriate?

Options:

Correct Answer: Incision and curettage of the lesion

Explanation: A persistent symptomatic chalazion that fails conservative measures may be treated by incision and curettage at ophthalmic level.

Question:

A 40-year-old patient has a painless, non-inflamed chalazion with no surrounding cellulitis or discharge. The patient asks why antibiotic treatment has not been prescribed. Which explanation is most appropriate?

Options:

Correct Answer: The established lesion is mainly a sterile granulomatous process

Explanation: Chalazion results from retained meibomian lipid with lipogranulomatous inflammation. Antibiotics are not routinely required unless a clinically important infection is also present.

Question:

A slowly growing eyelid mass is firm, poorly mobile and appears attached to deeper tissues. Why is this finding clinically concerning when assessing a lid bump?

Options:

Correct Answer: It suggests infiltrative growth into surrounding tissue

Explanation: Fixation to deeper structures is a warning sign because malignant tumors can infiltrate surrounding eyelid tissues rather than simply displacing them.

Question:

Histological examination of an upper-eyelid malignancy demonstrates sebaceous differentiation. Which normal eyelid structure is an important site of origin for this tumor?

Options:

Correct Answer: Meibomian glands of the tarsal plate

Explanation: Sebaceous gland carcinoma may arise from eyelid sebaceous glands, particularly the meibomian glands situated within the tarsal plate.

Question:

A 69-year-old outdoor worker develops a slowly progressive nodular lesion at the medial aspect of the lower eyelid. The lesion has gradually distorted the adjacent lid margin. Which diagnosis is most likely based on the age, exposure and site?

Options:

Correct Answer: Basal cell carcinoma

Explanation: Basal cell carcinoma is strongly associated with chronic ultraviolet exposure and classically involves sun-exposed lower-eyelid and medial-canthal skin.

Question:

An elderly patient has a slowly enlarging malignant eyelid nodule that develops central ulceration as it progresses. Which biological behavior best explains the ulcerated center?

Options:

Correct Answer: Progressive local destruction of central tissue

Explanation: Locally invasive eyelid malignancy can destroy tissue as it enlarges, producing characteristic surface breakdown and ulceration.

Question:

A 71-year-old man with marked lifetime sun exposure develops an indurated, scaly eyelid lesion that progressively ulcerates. The lesion is clinically more aggressive than a benign papilloma. Which diagnosis best fits this pattern?

Options:

Correct Answer: Squamous cell carcinoma

Explanation: Squamous cell carcinoma may present as a scaly, indurated or ulcerated eyelid lesion and is associated with cumulative ultraviolet injury.

Question:

A malignant eyelid lesion causes a focal area of madarosis over the involved lid margin. Which pathological change most directly produces this examination finding?

Options:

Correct Answer: Destruction of eyelash follicles by tumor infiltration

Explanation: Malignant infiltration can destroy lash follicles and distort the lid margin, so focal lash loss is an important warning sign in an eyelid tumor.

Question:

A 6-year-old boy has unilateral upper-lid drooping documented since infancy. Examination demonstrates consistently reduced elevation of the affected lid without a pupil abnormality or acquired neurological signs. Which underlying abnormality best explains the condition?

Options:

Correct Answer: Abnormal development of the levator muscle

Explanation: Congenital ptosis commonly results from developmental abnormality of the levator muscle, producing reduced levator function from childhood.

Question:

A patient develops persistent upper-lid drooping after a penetrating eyelid injury. Pupils and ocular movements are normal, but lid elevation is reduced. Which mechanism is most consistent with this presentation?

Options:

Correct Answer: Traumatic damage to the levator apparatus

Explanation: Eyelid trauma may damage the levator muscle, its aponeurosis or related nerve supply and thereby produce traumatic ptosis.

Question:

A 38-year-old woman with a known skeletal muscle disorder develops bilateral progressive drooping of the upper eyelids. Pupillary responses are normal and there is no eyelid mass. Which category of ptosis best fits this presentation?

Options:

Correct Answer: Myogenic ptosis

Explanation: Myogenic ptosis results from impaired function of the eyelid-elevating muscle and is an appropriate consideration in a patient with an underlying myopathy.

Question:

A patient has ptosis caused by a recently diagnosed neuromuscular disorder. The eyelid droop is cosmetically noticeable, but the underlying disease has not yet been treated. Which management principle is most appropriate?

Options:

Correct Answer: Treat the underlying disorder before structural lid correction

Explanation: Ptosis secondary to neurological or neuromuscular disease requires management of the underlying disorder rather than immediate cosmetic correction alone.

Question:

While assessing acquired ptosis, an ophthalmologist carefully inspects the position and definition of the upper-eyelid crease. Why is this part of the examination clinically useful?

Options:

Correct Answer: It provides information about levator-aponeurosis function

Explanation: The upper-lid crease is formed through levator-aponeurotic attachments, so its appearance can provide a useful clue to the mechanism of ptosis.

Question:

An older patient develops intermittent inward turning of the lower eyelid during episodes of forceful eyelid closure. There is increased orbicularis activity but no significant conjunctival scarring. Which form of entropion is most consistent with this mechanism?

Options:

Correct Answer: Spastic entropion

Explanation: Increased orbicularis activity can rotate the lid margin inward and produce spastic entropion, particularly in a susceptible lower eyelid.

Question:

A large benign mass arises from the lower eyelid and gradually pulls the lid margin away from the globe. Facial nerve function is normal and there is no skin scarring. Which type of ectropion best explains this finding?

Options:

Correct Answer: Mechanical ectropion

Explanation: A mass can physically weigh down and displace the lower eyelid outward, producing mechanical ectropion without facial paralysis or cicatricial shortening.

Question:

A patient with misdirected eyelashes complains of persistent foreign-body sensation. The ophthalmologist wants to determine whether repeated lash contact has damaged the corneal epithelium. Which examination method is most useful?

Options:

Correct Answer: Fluorescein staining of the corneal surface

Explanation: Fluorescein highlights corneal epithelial defects and therefore helps demonstrate surface damage produced by repeated lash-cornea contact.

Question:

Fundus examination in a patient suggests a retinal vascular disorder, and the ophthalmologist wants to study retinal circulation and areas of abnormal vascular leakage. Which investigation is most appropriate?

Options:

Correct Answer: Fundus fluorescein angiography

Explanation: FFA is used to evaluate retinal and choroidal circulation and to identify abnormal vascular leakage or areas of altered perfusion.

Question:

A patient has severe opacity of the ocular media, preventing direct visualization of the fundus. The ophthalmologist needs information about structures in the posterior segment before further management. Which investigation is most appropriate?

Options:

Correct Answer: Ocular ultrasonography

Explanation: Ocular ultrasonography can evaluate posterior-segment structures when opacity of the ocular media prevents adequate direct fundus visualization.