Ocular Manifestations of Systemic Disorders Practice Questions

Q: In a child with juvenile rheumatoid arthritis, what is a common finding on eye examination?

Band keratopathy. **Explanation:** **Juvenile Idiopathic Arthritis (JIA)**, particularly the oligoarticular subtype, is strongly associated with **Chronic Nonspecific Anterior Uveitis**. This inflammation is often asymptomatic ("white eye") but can lead to significant complications. **Band Keratopathy** is a classic finding in these patients, characterized by the horizontal deposition of calcium salts (hydroxyapatite) in the subepithelial layers, Bowman’s membrane, and anterior stroma of the cornea. It typically starts at the periphery (3 and 9 o'clock positions) and progresses centrally, often showing a "Swiss cheese" appearance due to holes where corneal nerves penetrate. **Analysis of Incorrect Options:** * **Vortex Keratopathy (Cornea Verticillata):** Characterized by whorl-like epithelial deposits. It is associated with **Amiodarone** use or **Fabry disease**, not inflammatory arthritis. * **Fuchs Endothelial Dystrophy:** A bilateral, slowly progressive genetic disorder of the corneal endothelium leading to stromal edema. It typically presents in elderly patients, not children. * **Bitot Spots:** These are foamy, triangular patches on the conjunctiva caused by **Vitamin A deficiency** and squamous metaplasia. **High-Yield Clinical Pearls for NEET-PG:** * **Triad of JIA-associated Uveitis:** Iridocyclitis, Band Keratopathy, and Complicated Cataract. * **Risk Factor:** Children who are **ANA (Antinuclear Antibody) positive** are at the highest risk for developing uveitis and require frequent slit-lamp screening. * **Treatment of Band Keratopathy:** If vision is affected, the treatment of choice is **chelation** using **EDTA (Ethylenediaminetetraacetic acid)**.

Q: Which of the following eye signs is most likely seen in a patient whose X-ray is shown below?

Anterior Uveitis. ***Anterior Uveitis*** - **Ankylosing spondylitis** (bamboo spine/sacroiliitis on X-ray) is strongly associated with **HLA-B27** and commonly presents with **acute anterior uveitis (AAU)**. - Clinical features include **eye pain**, **photophobia**, **ciliary flush**, and potential **hypopyon**, making it the most characteristic ocular manifestation. *Scleritis* - Typically associated with **rheumatoid arthritis** and **systemic vasculitis**, not seronegative spondyloarthropathies. - Presents with **deep boring pain** and **bluish-red scleral discoloration**, distinct from HLA-B27-related conditions. *Posterior Uveitis* - Commonly linked to **infectious causes** like **toxoplasmosis** or **systemic conditions** like **sarcoidosis**. - **Ankylosing spondylitis** specifically predisposes to **anterior compartment** inflammation, not posterior uveitis. *Conjunctivitis* - A **non-specific inflammatory condition** of the conjunctiva with no particular association to **HLA-B27** or **ankylosing spondylitis**. - Presents with **redness** and **discharge** but lacks the **deep ocular pain** and **photophobia** seen in anterior uveitis.

Q: What condition is characterized by a true pulse in the retinal arteries?

All of the above. **Explanation:** The phenomenon of a **true retinal arterial pulse** is a rare clinical finding where the retinal arteries visibly expand and contract in synchrony with the cardiac cycle. Under normal physiological conditions, the intraocular pressure (IOP) is higher than the diastolic pressure in the retinal arteries, preventing a visible pulse. A true pulse occurs when there is a **high pulse pressure** (a large difference between systolic and diastolic blood pressure). **Why "All of the Above" is Correct:** 1. **Aortic Regurgitation (AR):** This is the most common cause. In AR, the backflow of blood into the left ventricle during diastole leads to a very low diastolic pressure and a high systolic stroke volume. This wide pulse pressure is transmitted to the retinal circulation (Quincke’s sign equivalent). 2. **Aortic Aneurysm:** Large aneurysms can cause significant hemodynamic alterations and wide pulse pressures, leading to visible pulsations in the peripheral and retinal vascular beds. 3. **Exophthalmic Goiter (Graves' Disease):** Hyperthyroidism creates a hyperdynamic circulatory state. The increased cardiac output and peripheral vasodilation result in an increased pulse pressure, which can manifest as retinal arterial pulsations. **Clinical Pearls for NEET-PG:** * **True vs. Spontaneous Venous Pulsation (SVP):** Do not confuse arterial pulses with SVP. SVP is seen in 80-90% of normal individuals; its *absence* is a sign of raised intracranial pressure (early papilledema). * **Retinal Arterial Pulsation vs. Glaucoma:** A pulse can also be induced by applying external pressure to the globe (digital pressure) or in cases of **acute angle-closure glaucoma**, where the IOP exceeds the diastolic pressure of the retinal artery. * **High-Yield Association:** Retinal arterial pulsation + Water hammer pulse = Aortic Regurgitation.

Q: A patient presents with a normal anterior chamber and hazy cornea in one eye, and a shallow anterior chamber and miotic pupil in the fellow eye. Busacca nodules on the iris are observed. What is the diagnosis?

Acute anterior uveitis. **Explanation:** The clinical presentation points directly to **Acute Anterior Uveitis (Iridocyclitis)**. The "hazy cornea" in the affected eye is due to inflammatory keratic precipitates (KPs) or corneal edema. The "shallow anterior chamber and miotic pupil" in the fellow eye (or the same eye in chronic stages) are classic signs of **posterior synechiae**—inflammatory adhesions between the iris and the lens. These adhesions pull the iris backward or cause iris bombé, leading to a shallow chamber. **Busacca nodules** are a pathognomonic finding; they are inflammatory cell clusters located on the **iris stroma** (unlike Koeppe nodules, which are at the pupillary margin). Their presence confirms a granulomatous inflammatory process. **Why other options are incorrect:** * **Endophthalmitis:** This is a devastating intraocular infection usually following surgery or trauma. It presents with severe pain, loss of vision, chemosis, and a hypopyon, rather than localized iris nodules. * **Acute Congestive Glaucoma:** While this presents with a hazy cornea (edema) and shallow chamber, the pupil is typically **mid-dilated and vertically oval**, not miotic. There are no iris nodules. * **Chronic Simple Glaucoma:** This is a "silent" progressive disease with a normal-looking anterior segment and clear cornea. It does not present with inflammatory nodules or miosis. **NEET-PG High-Yield Pearls:** * **Koeppe Nodules:** Located at the pupillary border (seen in both granulomatous and non-granulomatous uveitis). * **Busacca Nodules:** Located on the iris surface (specific to **granulomatous** uveitis). * **Miosis in Uveitis:** Caused by ciliary muscle spasm and irritation of the sphincter pupillae. * **Treatment Gold Standard:** Topical steroids (to control inflammation) and cycloplegics like Atropine (to prevent synechiae and relieve ciliary spasm).

Q: What is the most common etiology of uveitis?

Autoimmune. **Explanation:** Uveitis refers to the inflammation of the uveal tract (iris, ciliary body, and choroid). In clinical practice and for the NEET-PG exam, it is essential to distinguish between the various etiologies. **Why Autoimmune is Correct:** The majority of uveitis cases are non-infectious and are associated with systemic immune-mediated disorders. The underlying mechanism involves a breakdown of the blood-ocular barrier and an exaggerated immune response against ocular antigens. Common associations include **HLA-B27 related spondyloarthropathies** (like Ankylosing Spondylitis), Sarcoidosis, Juvenile Idiopathic Arthritis (JIA), and Behçet’s disease. Even when a specific systemic disease isn't identified, the pathology is usually immune-driven. **Analysis of Incorrect Options:** * **Idiopathic:** While many cases are labeled idiopathic (up to 30-50% in some studies), modern diagnostic tools increasingly link these to underlying autoimmune processes. In the hierarchy of medical classification for exams, "Autoimmune/Systemic" is the primary category. * **Infection:** Infectious causes (e.g., Toxoplasmosis, Tuberculosis, Syphilis, HSV) are significant but represent a smaller percentage of total cases compared to autoimmune triggers. * **Traumatic:** Trauma causes "sympathetic ophthalmitis" or "traumatic iridocyclitis," but this is a specific subset and not the most common cause in the general population. **High-Yield Clinical Pearls for NEET-PG:** * **Most common systemic association:** HLA-B27 (presents as acute anterior uveitis). * **Most common cause of Posterior Uveitis:** Toxoplasmosis (Infectious). * **Most common cause of Uveitis in children:** Juvenile Idiopathic Arthritis (JIA) – characteristically a "white eye" (asymptomatic chronic anterior uveitis). * **Drug of choice:** Topical corticosteroids (e.g., Prednisolone acetate) are the mainstay for non-infectious uveitis.

Q: Which of the following signs is characterized by infrequent blinking of the eyelids in Graves' ophthalmopathy?

Stellwag sign. **Explanation:** **Stellwag’s sign** is a classic clinical feature of Graves' ophthalmopathy (Thyroid Eye Disease) characterized by **infrequent or incomplete blinking**. This occurs due to increased sympathetic activity and the overaction of the Levator Palpebrae Superioris (LPS) muscle, leading to a "staring" appearance. **Analysis of Options:** * **Stellwag’s sign (Correct):** Refers specifically to a decreased frequency of blinking. * **Enroth sign:** Refers to **edema/puffiness of the eyelids**, particularly the upper lids, often due to orbital fat prolapse or fluid accumulation. * **Gifford’s sign:** Characterized by **difficulty in everting the upper eyelid** due to significant lid retraction and spasm. * **Von Graefe sign:** This is the most famous sign, referring to **"Lid Lag"**—where the upper eyelid fails to follow the movement of the globe during downward gaze. **High-Yield Clinical Pearls for NEET-PG:** * **Dalrymple sign:** Widening of the palpebral fissure due to upper lid retraction in the primary position (the "staring look"). * **Joffroy’s sign:** Absence of forehead wrinkling when the patient looks upward. * **Mobius sign:** Inability to maintain convergence of the eyes. * **Pathogenesis:** These signs result from sympathetic overactivity and later, fibrotic changes in the extraocular muscles (most commonly the **Inferior Rectus**, followed by the Medial Rectus). * **Diagnosis:** Clinical diagnosis is supported by Thyroid Function Tests (TFTs) and imaging (CT/MRI) showing "coke-bottle" appearance of muscles with **tendon sparing**.

Q: Which of the following is a feature of Osteogenesis imperfecta?

Blue sclera. **Explanation:** **Osteogenesis Imperfecta (OI)**, also known as "Brittle Bone Disease," is a group of genetic disorders primarily caused by mutations in the **Type 1 Collagen** genes (*COL1A1* and *COL1A2*). **Why Blue Sclera is the Correct Answer:** The sclera is composed predominantly of Type 1 collagen. In OI, the collagen is either deficient or structurally abnormal, leading to a **thinning of the scleral coat**. This thinning makes the sclera translucent, allowing the underlying **uveal pigment (choroid)** to show through, which gives the eye a characteristic blue or slate-gray appearance. This is a classic high-yield association for medical exams. **Analysis of Incorrect Options:** * **B. Cataract:** While cataracts can occur in various systemic syndromes (like Down syndrome or Lowe syndrome), they are not a characteristic or diagnostic feature of Osteogenesis Imperfecta. * **C. Anterior Uveitis:** This is typically associated with HLA-B27 positive spondyloarthropathies (e.g., Ankylosing spondylitis) or Sarcoidosis, not collagen synthesis defects. * **D. Retinal Detachment:** While high myopes (who may have thin scleras) are at risk for RD, it is not a primary clinical feature used to identify OI. **High-Yield Clinical Pearls for NEET-PG:** * **Triad of OI (Van der Hoeve Syndrome):** Blue sclera, Fragile bones (multiple fractures), and Otosclerosis (conductive hearing loss). * **Differential Diagnosis of Blue Sclera:** Osteogenesis imperfecta, Ehlers-Danlos syndrome (Type VI), Marfan syndrome, Buphthalmos (congenital glaucoma), and long-term corticosteroid use. * **Other Ocular Features of OI:** Megalocornea and Keratoconus may occasionally be seen.

Q: A Dalen-Fuchs lesion is typically seen in which of the following conditions?

Sympathetic ophthalmitis. **Explanation:** **Sympathetic Ophthalmitis (SO)** is a rare, bilateral granulomatous panuveitis that occurs following a penetrating ocular injury or intraocular surgery in one eye (the "exciting eye"), subsequently affecting the fellow eye (the "sympathizing eye"). **Why Option D is Correct:** **Dalen-Fuchs nodules** are the hallmark histopathological and clinical feature of Sympathetic Ophthalmitis. They are small, discrete, yellowish-white elevated lesions located beneath the retinal pigment epithelium (RPE). Pathologically, they consist of collections of **epithelioid cells, macrophages, and pigment-laden cells** (and sometimes lymphocytes) situated between the RPE and Bruch’s membrane. **Why Other Options are Incorrect:** * **A. Purulent keratitis:** This is a bacterial corneal ulcer characterized by stromal infiltration and hypopyon, not granulomatous posterior segment lesions. * **B. Epidemic keratoconjunctivitis (EKC):** Caused by Adenovirus, this presents with "subepithelial infiltrates" in the cornea, which are immune-mediated but distinct from Dalen-Fuchs nodules. * **C. Retinoblastoma:** This is a primary intraocular malignancy in children. While it may show calcification or "pseudohypopyon," it does not feature Dalen-Fuchs lesions. **High-Yield Clinical Pearls for NEET-PG:** * **Histology of SO:** Characterized by non-necrotizing granulomatous inflammation with **"sparing of the choriocapillaris"** (a key differentiating feature from Vogt-Koyanagi-Harada syndrome). * **Other conditions with Dalen-Fuchs-like lesions:** Vogt-Koyanagi-Harada (VKH) syndrome and Sarcoidosis. * **Management:** The most effective prevention is the enucleation of the injured (exciting) eye within **2 weeks** of injury if it has no visual potential. * **Treatment:** Long-term systemic corticosteroids and immunosuppressants.

Q: Lisch nodule is seen in which of the following conditions?

Von Recklinghausen's disease. **Explanation:** **Lisch nodules** are the most common ocular manifestation of **Neurofibromatosis Type 1 (NF1)**, also known as **Von Recklinghausen’s disease**. Pathologically, these are melanocytic hamartomas of the iris stroma. They appear as well-defined, dome-shaped, clear-to-yellowish-brown elevations on the iris surface. They are typically bilateral, do not affect vision, and their prevalence increases with age (present in >90% of adult NF1 patients), making them a key diagnostic criterion. **Analysis of Incorrect Options:** * **Lupus vulgaris:** This is a chronic progressive form of cutaneous tuberculosis. Ocular involvement is rare but may include conjunctivitis or eyelid lesions, not iris nodules. * **Leprosy (Hansen’s Disease):** Ocular features include madarosis (loss of lashes), lagophthalmos, and chronic granulomatous uveitis. While "pearls" can be seen on the iris (iris pearls), they are distinct from Lisch nodules. * **Lymphogranuloma venereum (LGV):** Caused by *Chlamydia trachomatis*, it typically presents with Parinaud oculoglandular syndrome (conjunctivitis with lymphadenopathy), not intraocular hamartomas. **Clinical Pearls for NEET-PG:** * **Diagnostic Criteria:** Lisch nodules are part of the NIH diagnostic criteria for NF1 (2 or more nodules required). * **NF1 vs. NF2:** Lisch nodules are characteristic of **NF1**. In contrast, **NF2** is associated with **Presenile Posterior Subcapsular Cataracts** (PSC). * **Differential Diagnosis:** Do not confuse Lisch nodules with **Koeppe or Bussaca nodules**, which are inflammatory nodules seen in granulomatous uveitis (e.g., Sarcoidosis). * **Optic Nerve:** NF1 is also strongly associated with **Optic Nerve Gliomas**.

Question 1

True regarding iridocyclitis?

Accepted Answer

Associated with vasculitis

Answer

Can be treated with steroids

Answer

Not associated with trauma

Answer

Not common in old age

Question 2

In a child with juvenile rheumatoid arthritis, what is a common finding on eye examination?

Accepted Answer

Band keratopathy

Answer

Vortex keratopathy

Answer

Fuchs endothelial dystrophy

Answer

Bitot spots

Question 3

Which of the following eye signs is most likely seen in a patient whose X-ray is shown below?

Accepted Answer

Anterior Uveitis

Answer

Scleritis

Answer

Posterior Uveitis

Answer

Conjunctivitis

Question 4

What condition is characterized by a true pulse in the retinal arteries?

Accepted Answer

All of the above

Answer

Aortic aneurysm

Answer

Aortic regurgitation

Answer

Exophthalmic goiter

Question 5

A patient presents with a normal anterior chamber and hazy cornea in one eye, and a shallow anterior chamber and miotic pupil in the fellow eye. Busacca nodules on the iris are observed. What is the diagnosis?

Accepted Answer

Acute anterior uveitis

Answer

Endophthalmitis

Answer

Acute congestive glaucoma

Answer

Chronic simple glaucoma

Question 6

What is the most common etiology of uveitis?

Accepted Answer

Autoimmune

Answer

Infection

Answer

Idiopathic

Answer

Traumatic

Question 7

Which of the following signs is characterized by infrequent blinking of the eyelids in Graves' ophthalmopathy?

Accepted Answer

Stellwag sign

Answer

Enroth sign

Answer

Gifford's sign

Answer

Von Graefe sign

Question 8

Which of the following is a feature of Osteogenesis imperfecta?

Accepted Answer

Blue sclera

Answer

Cataract

Answer

Anterior uveitis

Answer

Retinal detachment

Question 9

A Dalen-Fuchs lesion is typically seen in which of the following conditions?

Accepted Answer

Sympathetic ophthalmitis

Answer

Purulent keratitis

Answer

Epidemic keratoconjunctivitis

Answer

Retinoblastoma

Question 10

Lisch nodule is seen in which of the following conditions?

Accepted Answer

Von Recklinghausen's disease

Answer

Lupus vulgaris

Answer

Leprosy

Answer

Lymphogranuloma venereum

Ocular Manifestations of Systemic Disorders — MCQs

Ocular Manifestations of Systemic Disorders — MCQs

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