Ocular Manifestations of Systemic Disorders Practice Questions

Q: What is a characteristic fundoscopic finding in advanced hypertensive retinopathy?

Cotton wool spots. ***Cotton wool spots*** - These are **soft exudates** that represent **acute focal infarction of the retinal nerve fiber layer** due to severe hypertension, indicating advanced hypertensive retinopathy (Grade III-IV). - They appear as **fluffy, white patches** with irregular, feathery borders in the superficial retina, caused by **ischemia and disruption of axoplasmic flow**. - In Grade IV (malignant hypertension), **optic disc edema** may also be present alongside cotton wool spots. *Microaneurysms* - These are small, dot-like hemorrhages common in **diabetic retinopathy**, resulting from weakened capillary walls. - While hypertension can coexist with diabetes and exacerbate retinal changes, **microaneurysms** are not a primary, characteristic finding of hypertensive retinopathy itself. *Cherry-red spot* - A **cherry-red spot** is a classic finding in **central retinal artery occlusion (CRAO)** and **Tay-Sachs disease**, due to the transparent fovea allowing visualization of the underlying choroidal circulation. - It does not characterize hypertensive retinopathy. *Drusen* - **Drusen** are yellow deposits under the retina, primarily associated with **age-related macular degeneration (AMD)**. - They are not a feature of hypertensive retinopathy.

Q: Which type of uveitis is most commonly associated with systemic autoimmune diseases such as ankylosing spondylitis and reactive arthritis?

Anterior uveitis. ***Anterior uveitis*** - **Anterior uveitis**, particularly acute anterior uveitis, is the type most frequently associated with **HLA-B27 positive spondyloarthropathies**, such as **ankylosing spondylitis** and **reactive arthritis**. - It often presents with sudden onset of **redness**, **pain**, and **photophobia** in one or both eyes. *Intermediate uveitis* - This type of uveitis primarily affects the **vitreous** and **pars plana**, often presenting with **floaters** and **blurred vision**. - It is typically associated with conditions like **multiple sclerosis** or is idiopathic, rather than spondyloarthropathies. *Posterior uveitis* - **Posterior uveitis** involves the **retina** and **choroid**, leading to symptoms like **decreased vision** and **scotomas**. - It is more commonly linked to infectious causes (e.g., **toxoplasmosis**, **tuberculosis**) or systemic diseases like **sarcoidosis**, not spondyloarthropathies. *Panuveitis* - **Panuveitis** involves inflammation of all parts of the uvea: **iris**, **ciliary body**, and **choroid**. - While it can occur in severe cases, it is not the initial or most common presentation of uveitis associated with spondyloarthropathies; **anterior uveitis** is the characteristic form.

Q: Which of the following ocular findings is not associated with diabetes?

Blepharophimosis. ***Blepharophimosis*** - This is a **congenital disorder** characterized by small palpebral fissures, ptosis, and epicanthus inversus, which is **not associated with diabetes**. - It is a **developmental anomaly** of the eyelids, with no known link to metabolic conditions like diabetes. *Retinopathy* - **Diabetic retinopathy** is a common and serious complication of diabetes, caused by damage to the blood vessels in the retina. - It can lead to vision loss if not managed, and is directly linked to **poor glycemic control**. *Early senile cataract* - Diabetes is a significant risk factor for the **earlier development and progression of cataracts**, including senile cataracts. - High blood sugar levels can cause changes in the lens, leading to **opacification** and impaired vision. *Neovascular glaucoma* - This severe form of **secondary glaucoma** is often a complication of advanced **diabetic retinopathy**. - Ischemia in the retina triggers the growth of **new blood vessels** on the iris and in the angle of the eye, obstructing aqueous outflow and raising intraocular pressure.

Q: Which ocular manifestation is considered a hallmark feature of Goldenhar syndrome?

Epibulbar dermoids. ***Epibulbar dermoids*** - **Epibulbar dermoids** are benign congenital tumors that appear as yellow-white masses, typically at the **limbus** (junction of the cornea and sclera), and are the most characteristic ocular finding in **Goldenhar syndrome**. - These dermoids can interfere with vision if they extend over the cornea or induce astigmatism. *Microphthalmia* - **Microphthalmia** refers to a condition where the eye is abnormally small, which can be seen in various congenital syndromes but is not a hallmark or exclusive feature of Goldenhar syndrome. - While it can occur in Goldenhar syndrome, it is less specific than epibulbar dermoids for diagnosis. *Sclerocornea* - **Sclerocornea** is a congenital anomaly where the cornea becomes opaque and resembles the sclera, often described as a "white cornea" or opacification of the cornea. - This condition is not a primary or hallmark feature of Goldenhar syndrome, though it can be part of other complex ocular developmental anomalies. *Megalocornea* - **Megalocornea** is an inherited condition characterized by an abnormally large corneal diameter, typically greater than 13 mm in adults. - While it can be an isolated finding or associated with other genetic conditions, it is not considered a defining ocular manifestation of Goldenhar syndrome.

Q: In Marfan syndrome, lens dislocation is typically located in which direction?

Superotemporal. **Superotemporal** - In Marfan syndrome, **ectopia lentis** (lens dislocation) is characteristic and typically occurs **superiorly and temporally** due to weakened zonular fibers caused by fibrillin-1 deficiency. - This specific displacement pattern can help distinguish Marfan syndrome from other connective tissue disorders. *Inferonasal* - This direction of lens dislocation is more commonly associated with **homocystinuria**, another genetic disorder affecting connective tissue. - While both conditions can cause lens dislocation, the **inferonasal** displacement points away from Marfan syndrome. *Forward* - A forward displacement of the lens (anterior dislocation) is rare and can be caused by **trauma** or, less commonly, by **weak zonules** allowing the lens to pass into the anterior chamber. - It is not the characteristic displacement seen in Marfan syndrome. *Backward* - Backward displacement (posterior dislocation) usually means the lens falls into the **vitreous cavity**. - This can be due to **severe trauma** or complete zonular detachment, but it is not the typical direction in Marfan syndrome.

Q: Which is the most common ocular finding in myasthenia gravis?

Ptosis. ***Ptosis*** - **Ptosis**, or drooping of the eyelid, is the most common ocular manifestation of **myasthenia gravis**, affecting a large majority of patients. - It results from **weakness of the levator palpebrae superioris muscle**, which is responsible for lifting the eyelid. *Lagophthalmos* - **Lagophthalmos** is the inability to close the eyelids completely, often due to facial nerve palsy or severe proptosis. - While it can lead to exposure keratopathy, it is **not a primary or common finding** in myasthenia gravis. *Proptosis* - **Proptosis** (or exophthalmos) is the forward bulging of the eyeball, most commonly associated with **Graves' ophthalmopathy**. - It is **not a feature of myasthenia gravis**, which typically involves muscle weakness, not orbital mass effects. *Enophthalmos* - **Enophthalmos** refers to the posterior displacement of the eyeball within the orbit, often seen in conditions like **orbital fractures** or Horner's syndrome. - It is **not associated with the neuromuscular dysfunction** characteristic of myasthenia gravis.

Q: What is the most common eye lesion in HIV?

Cotton wool spots. ***Cotton wool spots*** - These are the most common ocular manifestation in HIV-positive individuals, resulting from **ischemic retinal nerve fiber layer damage**. - While not vision-threatening themselves, their presence indicates **microvascular damage** and can be a sign of systemic disease progression. *Kaposi Sarcoma of Lid* - While Kaposi sarcoma can affect the eyelids in HIV patients, it is **not the most common ocular lesion**. - It presents as a **reddish-purple nodule** or plaque and is an indicator of advanced immunosuppression. *CMV Retinitis* - Cytomegalovirus (CMV) retinitis is a significant and **vision-threatening opportunistic infection** in advanced HIV. - However, it occurs in patients with **severe immunosuppression** (low CD4 counts) and is less common overall than cotton wool spots. *Choroiditis* - Choroiditis, an inflammation of the choroid, can occur in HIV patients due to various opportunistic infections or directly from the virus. - It is **less prevalent** than cotton wool spots and typically requires specific etiologies beyond HIV itself.

Q: The earliest change noticed in hypertensive retinopathy is:

Arteriolar spasm. ***Arteriolar spasm*** - **Arteriolar spasm** is the **earliest functional change** and is characterized by increased vascular tone in response to elevated blood pressure. - This spasm is a dynamic process and often leads to **narrowing of the retinal arterioles**, which can be observed during fundoscopic examination. *Soft exudate* - **Soft exudates**, also known as **cotton wool spots**, represent areas of **ischemic retinal nerve fiber layer** damage due to obstruction of precapillary arterioles. - These are typically seen in later stages of hypertensive retinopathy, indicating more significant vascular damage and ischemia. *Venospasm* - **Venospasm**, or narrowing of retinal veins, is **not a primary or early finding** in hypertensive retinopathy. - While venous changes like tortuosity can occur, arterial changes dominate the early pathogenesis. *Hard exudate* - **Hard exudates** are yellow-white deposits of **lipid and protein** that leak from damaged capillaries, often indicative of chronic retinal edema and incompetent blood-retinal barrier. - These usually appear in **more advanced stages** of hypertensive retinopathy and are not considered the earliest change.

Q: What condition is characterized by a salt and pepper fundus appearance in the retina?

Congenital syphilis. ***Congenital syphilis*** - The **"salt and pepper" fundus** appearance is a classic ophthalmologic finding in congenital syphilis, resulting from diffuse pigmentary retinopathy. - This condition is caused by widespread pigmentary changes in the retina, affecting both the retinal pigment epithelium and neurosensory retina. - It represents chronic, bilateral, and symmetric chorioretinitis that is pathognomonic for congenital syphilis. *Congenital toxoplasmosis* - While it can cause chorioretinitis, congenital toxoplasmosis typically presents with **focal, destructive lesions** rather than diffuse "salt and pepper" pigmentary changes. - Classic ocular lesions are often described as a **"headlight in the fog"** or inactive, pigmented chorioretinal scars. *Congenital histoplasmosis* - Ocular histoplasmosis syndrome (OHS) is usually acquired, not congenital, and causes **discrete chorioretinal scars** ("histo spots") often in the macula or peripapillary region. - It does not result in a diffuse **"salt and pepper" fundus** appearance. *Congenital rubella* - Congenital rubella syndrome can cause pigmentary retinopathy, but the pattern is typically **patchy or mottled** rather than the classic "salt and pepper" appearance. - Other ocular findings include cataract, microphthalmos, and glaucoma.

Q: Patient with acute pancreatitis developed sudden loss of vision; the most likely cause is:

Purtscher's retinopathy. ***Purtscher's retinopathy*** - **Purtscher's retinopathy** is a rare but classic complication of acute pancreatitis, presenting with **sudden vision loss** due to retinal ischemia. - It is characterized by **Purtscher flecken**, which are multifocal areas of retinal whitening with clear zones separating them from the retinal vessels, and often bilateral. *Hyperglycemia* - While complications of diabetes can affect vision, severe hyperglycemia itself typically causes **gradual vision changes** due to osmotic shifts in the lens, not sudden loss. - Acute vision loss due to hyperglycemia would more likely relate to **diabetic retinopathy exacerbation** or **vitreous hemorrhage**, which are not directly implied by acute pancreatitis alone. *Hypoxia* - **Severe systemic hypoxia** can lead to retinal ischemia and vision changes, but sudden, dramatic vision loss specifically from hypoxia is less common than from Purtscher's in the context of acute pancreatitis. - Although pancreatitis can lead to respiratory distress and hypoxia, Purtscher's retinopathy is a more specific and direct ocular complication. *Central Retinal Vein Occlusion (CRVO)* - **CRVO** causes sudden, painless vision loss usually in **one eye** due to a blockage in the central retinal vein. - While pancreatitis increases the risk of hypercoagulability, CRVO is not the most common or specific cause of sudden vision loss associated with acute pancreatitis.

Question 1

What is a characteristic fundoscopic finding in advanced hypertensive retinopathy?

Accepted Answer

Cotton wool spots

Answer

Microaneurysms

Answer

Cherry-red spot

Answer

Drusen

Question 2

Which type of uveitis is most commonly associated with systemic autoimmune diseases such as ankylosing spondylitis and reactive arthritis?

Accepted Answer

Anterior uveitis

Answer

Intermediate uveitis

Answer

Posterior uveitis

Answer

Panuveitis

Question 3

Which of the following ocular findings is not associated with diabetes?

Accepted Answer

Blepharophimosis

Answer

Retinopathy

Answer

Early senile cataract

Answer

Neovascular glaucoma

Question 4

Which ocular manifestation is considered a hallmark feature of Goldenhar syndrome?

Accepted Answer

Epibulbar dermoids

Answer

Microphthalmia

Answer

Sclerocornea

Answer

Megalocornea

Question 5

In Marfan syndrome, lens dislocation is typically located in which direction?

Accepted Answer

Superotemporal

Answer

Inferonasal

Answer

Forward

Answer

Backward

Question 6

Which is the most common ocular finding in myasthenia gravis?

Accepted Answer

Ptosis

Answer

Lagophthalmos

Answer

Proptosis

Answer

Enophthalmos

Question 7

What is the most common eye lesion in HIV?

Accepted Answer

Cotton wool spots

Answer

Kaposi Sarcoma of Lid

Answer

CMV Retinitis

Answer

Choroiditis

Question 8

The earliest change noticed in hypertensive retinopathy is:

Accepted Answer

Arteriolar spasm

Answer

Soft exudate

Answer

Venospasm

Answer

Hard exudate

Question 9

What condition is characterized by a salt and pepper fundus appearance in the retina?

Accepted Answer

Congenital syphilis

Answer

Congenital rubella

Answer

Congenital toxoplasmosis

Answer

Congenital histoplasmosis

Question 10

Patient with acute pancreatitis developed sudden loss of vision; the most likely cause is:

Accepted Answer

Purtscher's retinopathy

Answer

Hypoxia

Answer

Central Retinal Vein Occlusion (CRVO)

Answer

Hyperglycemia

Ocular Manifestations of Systemic Disorders — MCQs

Ocular Manifestations of Systemic Disorders — MCQs

On this page

Practice by Chapter

Want unlimited practice?