Ocular Manifestations of Systemic Disorders Practice Questions

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**.

Q: A 2-year-old unimmunized child from a hilly tribal area developed Keratomalacia after a viral infection. Which of the following viral infections could have led to the development of Keratomalacia?

Rubeola. **Explanation:** **Correct Answer: B. Rubeola (Measles)** The correct answer is **Rubeola**, commonly known as Measles. In developing countries and underserved areas, Measles is a leading cause of childhood blindness. The underlying medical concept involves a "triple threat" to the cornea: 1. **Vitamin A Depletion:** The measles virus causes a massive systemic inflammatory response that rapidly depletes the body’s Vitamin A stores. 2. **Epithelial Damage:** The virus directly infects the conjunctival and corneal epithelium, causing keratitis. 3. **Secondary Infection:** Measles induces transient immunosuppression, predisposing the child to secondary bacterial or fungal corneal ulcers, which rapidly progress to **Keratomalacia** (liquefactive necrosis of the cornea). **Analysis of Incorrect Options:** * **A. Rubella:** Primarily associated with "Congenital Rubella Syndrome," presenting with cataracts, glaucoma, and "salt and pepper" retinopathy, rather than acute keratomalacia. * **C. Mumps:** Ocular involvement is rare but typically manifests as dacryoadenitis (inflammation of the lacrimal gland) or optic neuritis. * **D. Varicella:** Can cause dendritic keratitis or uveitis, but it does not typically lead to the rapid corneal melting seen in Vitamin A-deficient children post-measles. **High-Yield Clinical Pearls for NEET-PG:** * **WHO Protocol:** All children diagnosed with Measles in endemic areas should receive two doses of **Vitamin A** (200,000 IU for >1 year; 100,000 IU for 6–12 months) to prevent blindness and reduce mortality. * **Bitot’s Spots:** Triangular, foamy patches on the bulbar conjunctiva; a hallmark of Vitamin A deficiency. * **Xerophthalmia Classification:** Keratomalacia involving >1/3 of the cornea is classified as **X3B**.

Q: Which condition presents with uveitis, auditory problems, and cutaneous issues?

Vogt-Koyanagi-Harada syndrome. **Explanation:** **Vogt-Koyanagi-Harada (VKH) Syndrome** is a multisystem autoimmune disorder characterized by T-cell mediated destruction of melanocytes. Since melanocytes are found in the eye (uvea), inner ear, skin, and meninges, the clinical presentation is classic: * **Ocular:** Bilateral granulomatous panuveitis, often with exudative retinal detachment. * **Auditory:** Dysacusis, tinnitus, and vertigo. * **Cutaneous:** Poliosis (whitening of hair/eyelashes), vitiligo, and alopecia. * **Neurological:** Meningismus (headache, neck stiffness) and CSF pleocytosis. **Analysis of Incorrect Options:** * **Behcet’s Disease:** Presents with a triad of oral ulcers, genital ulcers, and uveitis (classically with a shifting hypopyon). It lacks auditory and cutaneous depigmentation features. * **Ankylosing Spondylitis:** Associated with HLA-B27. It typically presents with acute, unilateral, non-granulomatous anterior uveitis and sacroiliitis, but no auditory or skin involvement. * **Marfan’s Syndrome:** A connective tissue disorder (FBN1 mutation) presenting with ectopia lentis (superotemporal subluxation) and skeletal/cardiac issues, not uveitis or auditory loss. **High-Yield Clinical Pearls for NEET-PG:** * **VKH Phases:** Prodromal (flu-like/meningeal) → Uveitic (exudative RD) → Convalescent (Sugiura sign/Sunset glow fundus) → Chronic recurrent. * **Sugiura Sign:** Perilimbal vitiligo (depigmentation at the limbus), highly specific for VKH. * **Sunset Glow Fundus:** An orange-red discoloration of the fundus due to chronic depigmentation of the RPE. * **Epidemiology:** More common in pigmented races (Asians, Hispanics, Native Americans).

Q: What is the most common intraocular tumor in adults?

Metastasis. **Explanation:** The most common intraocular tumor in adults is **Metastasis (Option A)**. While many clinicians associate intraocular malignancy primarily with uveal melanoma, autopsy studies and clinical data confirm that secondary metastatic deposits are far more frequent. These tumors typically reach the eye via hematogenous spread, most commonly seeding the **choroid** due to its high vascularity. In males, the primary source is usually lung cancer, while in females, it is breast cancer. **Analysis of Incorrect Options:** * **Retinoblastoma (Option B):** This is the most common primary intraocular malignancy in **children**, typically presenting before age 3. It is rare in adults. * **Malignant Melanoma (Option C):** This is the most common **primary** intraocular malignancy in adults. However, when the question asks for the "most common" overall (including secondary tumors), metastasis outranks it. * **Vitreous Tumor (Option D):** Primary tumors of the vitreous are extremely rare. Most vitreous involvements are secondary to primary intraocular lymphoma (PIOL) or spillover from retinal/choroidal tumors. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site for metastasis:** Choroid (90%), followed by the iris and ciliary body. * **Most common primary source:** Breast (most common overall) and Lung. * **Clinical presentation:** Often presents as a creamy-yellow, placoid (flat) subretinal mass, frequently associated with exudative retinal detachment. * **Diagnostic Tip:** If a patient presents with bilateral or multifocal intraocular masses, always suspect metastasis over primary melanoma.

Q: A 10-year-old child presents with Fanconi's syndrome. Which of the following ocular findings is most characteristic?

Kayser-Fleischer ring. **Explanation:** The correct answer is **C. Kayser-Fleischer ring.** **Medical Concept:** Fanconi’s syndrome is a disorder of the kidney's proximal renal tubules, often occurring as a secondary complication of **Wilson’s disease** (Hepatolenticular degeneration). Wilson’s disease is characterized by a deficiency in ceruloplasmin, leading to systemic copper deposition. The **Kayser-Fleischer (KF) ring** is a golden-brown or greenish deposit of copper in the **Descemet’s membrane** of the peripheral cornea. It is the hallmark ocular sign of Wilson’s disease and is present in nearly all patients with neurological involvement and most with renal manifestations like Fanconi's syndrome. **Analysis of Incorrect Options:** * **A. Vogt’s striae:** These are vertical stress lines seen in the deep stroma/Descemet’s membrane in patients with **Keratoconus**. * **B. Fleischer ring:** This is an iron deposit (hemosiderin) at the base of the cone in **Keratoconus**. (Note: Do not confuse *Fleischer* ring with *Kayser-Fleischer* ring). * **D. Stocker line:** This is a vertical iron line seen on the corneal epithelium at the leading edge of a **Pterygium**. **High-Yield Clinical Pearls for NEET-PG:** * **KF Ring Location:** Starts at the 12 o'clock and 6 o'clock positions (superior and inferior limbus) before becoming circumferential. * **Sunflower Cataract:** Another ocular finding in Wilson’s disease (copper deposition in the anterior lens capsule). * **Hudson-Stahli line:** Iron deposition in the corneal epithelium associated with normal aging. * **Ferry’s line:** Iron deposit at the edge of a filtering bleb (glaucoma surgery).

Q: Systemic corticosteroids in herpes zoster ophthalmicus are indicated when associated with which of the following conditions?

Optic neuritis. **Explanation:** In **Herpes Zoster Ophthalmicus (HZO)**, the use of systemic corticosteroids is a nuanced clinical decision. While oral acyclovir is the mainstay of treatment, systemic steroids are reserved for specific inflammatory complications where the benefit of reducing immune-mediated damage outweighs the risk of viral reactivation. **Why Optic Neuritis is the Correct Answer:** Optic neuritis in HZO is an inflammatory, often occlusive, complication that can lead to permanent vision loss. Systemic corticosteroids (often starting with IV methylprednisolone) are indicated to reduce the inflammatory edema and prevent irreversible damage to the optic nerve fibers. This is a high-priority indication to salvage vision. **Analysis of Incorrect Options:** * **Facial Nerve Palsy (Option A):** While steroids are the standard of care for *Bell’s Palsy*, their role in HZO-associated cranial nerve palsies (like the 3rd, 4th, or 6th nerves) is controversial. Most cases are self-limiting and managed with antiviral therapy alone. * **Post-herpetic Neuralgia (PHN) (Option C):** Clinical trials have shown that while systemic steroids may reduce the *duration* of acute pain during the eruptive phase, they do **not** prevent the incidence or severity of chronic Post-herpetic Neuralgia. PHN is primarily managed with gabapentin, pregabalin, or tricyclic antidepressants. **High-Yield Clinical Pearls for NEET-PG:** * **Hutchinson’s Sign:** Vesicles on the tip of the nose indicate involvement of the nasociliary nerve, predicting a higher risk (76%) of ocular involvement. * **Topical Steroids:** Indicated for HZO-associated keratitis (nummular or disciform) and uveitis, but only under strict antiviral cover. * **Dose:** Systemic steroids are generally avoided in the presence of active viral replication unless a sight-threatening or life-threatening inflammatory complication (like orbital apex syndrome or encephalitis) is present.

Q: Red keratin precipitates are seen in which of the following conditions?

Hemorrhagic uveitis. **Explanation:** **Keratic Precipitates (KPs)** are inflammatory cell deposits on the corneal endothelium, typically seen in the lower triangular area (Arlt’s triangle) due to convection currents in the aqueous humor. **1. Why Hemorrhagic Uveitis is Correct:** In **hemorrhagic uveitis**, there is an accumulation of red blood cells (RBCs) in the anterior chamber. These RBCs deposit on the corneal endothelium, giving the precipitates a characteristic **red or "rusty" appearance**. This is distinct from standard inflammatory KPs, which are usually white or gray. **2. Analysis of Incorrect Options:** * **Granulomatous Uveitis:** Characterized by **"Mutton-fat" KPs**. These are large, greasy, yellowish-white clusters composed of epithelioid cells and macrophages. * **Old Healed Uveitis:** KPs in this stage appear **pigmented (crenated)** or "dusted" with melanin. They are usually shrunken and non-active. * **Acute Anterior Uveitis:** Typically presents with **small to medium-sized, discrete, white KPs** (lymphoid cells). They are non-greasy and indicate an active non-granulomatous process. **Clinical Pearls for NEET-PG:** * **Arlt’s Triangle:** The classic distribution of KPs on the inferior cornea. * **Krukenberg’s Spindle:** A vertical line of pigment on the endothelium (seen in Pigment Dispersion Syndrome), not to be confused with inflammatory KPs. * **Stellate KPs:** Fine, star-shaped precipitates distributed over the entire endothelium; characteristic of **Fuchs’ Heterochromic Iridocyclitis** and Viral Uveitis (CMV/Herpes). * **Plastic/Fibrinous Aqueous:** Seen in severe acute anterior uveitis (e.g., HLA-B27 associated).

Q: Diagnose the condition.

Wilson's disease. ***Wilson's disease*** - The image shows **Kayser-Fleischer rings** - pathognomonic **golden-brown copper deposits** at the corneal periphery (Descemet's membrane). - These rings are virtually **diagnostic of Wilson's disease**, a copper metabolism disorder causing hepatic and neurological manifestations. *Keratoconus* - Presents with **cone-shaped corneal protrusion** and **Munson's sign** (lower eyelid bulging when looking down). - Does not cause **golden-brown rings** at the corneal periphery like shown in the image. *Glaucoma* - Characterized by **optic disc cupping** and **visual field defects**, not corneal ring findings. - May cause **corneal edema** in acute cases, but not the **golden-brown deposits** seen here. *Williams syndrome* - A **genetic disorder** causing distinctive facial features and **stellate iris pattern**. - Does not produce **Kayser-Fleischer rings** or corneal copper deposition.

Question 1

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 2

Lisch nodule is seen in which of the following conditions?

Accepted Answer

Von Recklinghausen's disease

Answer

Lupus vulgaris

Answer

Leprosy

Answer

Lymphogranuloma venereum

Question 3

A 2-year-old unimmunized child from a hilly tribal area developed Keratomalacia after a viral infection. Which of the following viral infections could have led to the development of Keratomalacia?

Accepted Answer

Rubeola

Answer

Rubella

Answer

Mumps

Answer

Varicella

Question 4

Which condition presents with uveitis, auditory problems, and cutaneous issues?

Accepted Answer

Vogt-Koyanagi-Harada syndrome

Answer

Behcet's disease

Answer

Ankylosing spondylitis

Answer

Marfan's syndrome

Question 5

What is the most common intraocular tumor in adults?

Accepted Answer

Metastasis

Answer

Retinoblastoma

Answer

Malignant melanoma

Answer

Vitreous tumor

Question 6

A 10-year-old child presents with Fanconi's syndrome. Which of the following ocular findings is most characteristic?

Accepted Answer

Kayser-Fleischer ring

Answer

Vogt's striae

Answer

Fleischer ring

Answer

Stocker line

Question 7

Systemic corticosteroids in herpes zoster ophthalmicus are indicated when associated with which of the following conditions?

Accepted Answer

Optic neuritis

Answer

Facial nerve palsy

Answer

Post-herpetic neuralgia

Answer

All of the above

Question 8

Red keratin precipitates are seen in which of the following conditions?

Accepted Answer

Hemorrhagic uveitis

Answer

Granulomatous uveitis

Answer

Old healed uveitis

Answer

Acute anterior uveitis

Question 9

Diagnose the condition.

Accepted Answer

Wilson's disease

Answer

Keratoconus

Answer

Glaucoma

Answer

Williams syndrome

Question 10

The use of highly active anti-retroviral therapy (HAART) is associated with the development of:

Accepted Answer

Posterior Uveitis

Answer

Keratitis

Answer

Anterior Uveitis

Answer

Optic neuritis

Ocular Manifestations of Systemic Disorders — MCQs

Ocular Manifestations of Systemic Disorders — MCQs

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