Diseases of the Retina Practice Questions

Q: What is the most common complication of pars planitis?

Cataract (clouding of the lens). **Cataract (clouding of the lens)** - **Cataract formation** is the most common ocular complication in patients with pars planitis, often due to chronic inflammation or steroid use. - The inflammation can disrupt lens metabolism, leading to **opacification** over time. *Retinal detachment (separation of retina)* - While possible, **retinal detachment** is a less common complication of pars planitis compared to cataract formation. - It can occur in severe cases, often due to vitreous traction on fragile peripheral retina or tears associated with **snowbanking**. *Cystoid macular edema (swelling of central retina)* - **Cystoid macular edema (CME)** is a significant cause of vision loss in pars planitis but is not the most frequent complication overall. - It results from the inflammatory compromise of the blood-retinal barrier, leading to fluid accumulation in the **macula**. *Glaucoma (increased intraocular pressure)* - **Glaucoma** can occur in pars planitis, often secondary to chronic inflammation affecting the **trabecular meshwork** or prolonged steroid use. - However, it is less common than cataracts and CME as a primary complication.

Q: What condition is characterized by cherry red spot at the macula with retinal whitening?

CRAO. ***CRAO*** - **Central retinal artery occlusion (CRAO)** is characterized by **sudden, profound, painless monocular vision loss**. - The classic funduscopic finding is a **cherry-red spot at the macula** with diffuse **retinal whitening** due to ischemia. *CRVO* - **Central retinal vein occlusion (CRVO)** presents with **painless vision loss** but typically shows **hemorrhages**, **dilated tortuous veins**, and **cotton wool spots** on funduscopic exam. - It does not usually cause retinal whitening or a cherry-red spot. *Diabetic retinopathy* - **Diabetic retinopathy** is characterized by **microaneurysms**, **hemorrhages**, **hard exudates**, and **cotton wool spots**, and can lead to neovascularization. - It does not present with acute retinal whitening or a cherry-red spot in the macula. *Syphilitic retinopathy* - **Syphilitic retinopathy** can cause a variety of presentations, including **retinal vasculitis**, **chorioretinitis**, and **optic neuritis**. - It does not typically manifest as a cherry-red spot with diffuse retinal whitening at the macula.

Q: What is the first clinical sign observed in a patient with anterior uveitis?

Presence of aqueous flare. ***Presence of aqueous flare*** - **Aqueous flare** is considered the **earliest clinical sign** of anterior uveitis, representing increased protein content in the anterior chamber due to breakdown of the **blood-aqueous barrier**. - It is detected as a visible "haze" when a **slit lamp beam** passes through the anterior chamber, similar to observing dust particles in a light beam. *Presence of hypopyon* - **Hypopyon** is a more severe sign, indicating a **layer of white blood cells** in the anterior chamber, representing a more advanced inflammatory process. - While it can occur in severe anterior uveitis, it is not typically the **first or earliest** clinical manifestation. *Presence of miosis* - **Miosis** (pupillary constriction) can be present in anterior uveitis due to **iris inflammation** and irritation of the sphincter muscle. - However, it is an indirect sign and typically occurs *after* the initial signs of inflammation in the aqueous humor, such as flare. *Presence of keratic precipitates* - **Keratic precipitates (KPs)** are deposits of inflammatory cells on the **endothelium of the cornea**. - These deposits are a result of sustained inflammation and typically appear *after* the initial inflammatory changes in the aqueous humor, such as flare, have already occurred.

Q: Foster's Fuchs spots are specifically associated with which condition?

Myopia. ***Myopia*** - **Foster's-Fuchs spots** are a pathognomonic finding in **pathologic myopia**, characterized by subretinal neovascularization and hemorrhage at the macula. - This condition is associated with high degrees of **myopia** (nearsightedness), leading to thinning and stretching of the retina and choroid. - The spots represent **pigmented scars** from resolved choroidal neovascular membrane hemorrhages. *Hypermetropia* - **Hypermetropia** (farsightedness) does not typically lead to Foster's-Fuchs spots; these spots are specific to the degenerative changes seen in high myopia. - Ocular complications in hypermetropia are different and may include **angle-closure glaucoma** or **accommodative esotropia**. *Astigmatism* - **Astigmatism** is an optical defect where the eye fails to focus light equally on the entire retina, causing blurred vision at any distance. - It is not associated with the development of **Foster's-Fuchs spots**, which are a specific macular degeneration seen in myopia. *Presbyopia* - **Presbyopia** is the age-related loss of accommodation due to decreased lens elasticity. - It is a physiological change and is not associated with **Foster's-Fuchs spots** or the structural changes seen in pathologic myopia.

Q: Shaffer's sign is seen in ?

Retinal detachment. ***Retinal detachment*** - **Shaffer's sign** refers to the presence of **pigment cells** (tobacco dust) in the **anterior vitreous**, indicating a retinal break or detachment. - This sign is due to the release of retinal pigment epithelium cells into the vitreous following a tear in the retina. *Acute angle-closure glaucoma* - This condition is characterized by a **sudden increase in intraocular pressure** due to blocked fluid outflow, causing pain, redness, and blurred vision. - It does not involve pigment cells in the vitreous, but rather changes in the **anterior chamber angle**. *Diabetic retinopathy* - This is a microvascular complication of diabetes, leading to damage to the blood vessels in the retina, causing **hemorrhages**, **exudates**, and **neovascularization**. - It does not typically present with free pigment in the vitreous as a primary diagnostic sign. *Age-related macular degeneration* - This condition affects the **macula**, often causing distorted vision and central vision loss, and is characterized by drusen and atrophy. - While it can involve retinal changes, it does not classically present with pigment cells in the vitreous as a diagnostic indicator.

Q: What is Eales disease?

Recurrent periphlebitis retinae. **Recurrent periphlebitis retinae** - **Eales disease** is an idiopathic inflammatory condition characterized by **recurrent periphlebitis retinae**, particularly affecting the peripheral retinal veins. - It can lead to **retinal ischemia**, neovascularization, vitreous hemorrhage, and retinal detachment. *Recurrent optic neuritis* - **Optic neuritis** is inflammation of the optic nerve, typically causing acute vision loss and pain with eye movement. - It is a common manifestation of **multiple sclerosis** but is not the primary definition of Eales disease. *Recurrent papilloedema* - **Papilledema** is swelling of the optic disc due to increased intracranial pressure. - While it can cause visual disturbances, it is a distinct condition and not the defining characteristic of Eales disease. *None of the options* - This option is incorrect because "Recurrent periphlebitis retinae" accurately describes Eales disease.

Q: Hemorrhage in the vitreous humour is caused by all of the following except:

Glaucoma. ***Glaucoma*** - **Glaucoma** is primarily characterized by optic nerve damage due to elevated intraocular pressure, leading to **visual field loss**. - While it can lead to vision impairment, it does not typically cause **vitreous hemorrhage** directly, as it doesn't involve the proliferation of fragile blood vessels. *Diabetes mellitus* - **Diabetic retinopathy** is a leading cause of vitreous hemorrhage, especially in its proliferative form, due to the growth of **fragile new blood vessels** (neovascularization) that can bleed into the vitreous. - These new vessels are prone to rupture, leading to sudden vision loss from vitreous bleeding. *CRVO* - **Central Retinal Vein Occlusion (CRVO)** often leads to **retinal ischemia** and the release of **angiogenic factors** (e.g., VEGF), which can cause **neovascularization** on the retina or iris. - These newly formed, fragile vessels can rupture and bleed into the vitreous cavity. *Trauma* - **Ocular trauma**, such as a direct blow to the eye or a penetrating injury, can directly rupture retinal or choroidal blood vessels, leading to a **vitreous hemorrhage**. - This can range from mild bleeding to extensive hemorrhage, depending on the severity and nature of the injury.

Q: Which ophthalmological investigation is most appropriate for detailed visualization of the fundus at close range?

Direct ophthalmoscopy. ***Direct ophthalmoscopy*** - This technique allows for a **highly magnified**, upright image of the fundus, making it ideal for **detailed visualization** of the macula and optic disc at close range. - It provides a **small field of view** but excellent resolution for observing subtle changes. *Retinoscopy* - Retinoscopy is primarily used to objectively determine the **refractive error** of the eye, not for detailed fundus visualization. - It assesses how light is reflected from the retina to determine the need for corrective lenses. *Indirect ophthalmoscopy* - While it provides a **wider field of view** and a stereoscopic image, it offers **less magnification** and thus less detail compared to direct ophthalmoscopy. - It is often used for evaluating the peripheral retina and in cases where direct ophthalmoscopy is difficult. *Oblique illumination test* - This test is used to examine the **anterior segment of the eye**, such as the cornea, anterior chamber, and lens. - It involves shining a light at an angle and observing structures, not for visualizing the fundus.

Q: Large, white keratic precipitates (mutton-fat KPs) are characteristically seen in?

Granulomatous uveitis. ***Granulomatous uveitis*** - **Mutton-fat keratic precipitates (KPs)** are large, greasy-appearing white deposits on the corneal endothelium, characteristic of **granulomatous inflammation**. - These KPs are composed of macrophages and epithelioid cells, reflecting a **chronic, cell-mediated immune response** seen in granulomatous conditions. *Hemorrhagic uveitis* - This condition involves significant **intraocular bleeding**, which would manifest as hyphema or vitreous hemorrhage, not mutton-fat KPs. - While inflammation may be present, the defining feature is blood, which obscures vision differently than KPs. *Old healed uveitis* - After uveitis heals, KP morphology can change, often appearing smaller, more pigmented, or forming distinct patterns such as **Arlt's triangle**, but not typically actively large, white mutton-fat KPs. - Healed KPs often reflect a less active or resolved inflammatory process, unlike fresh mutton-fat KPs. *Acute anterior uveitis* - This typically presents with smaller, finer, and more numerous **non-granulomatous KPs** (sometimes called "stellate KPs"), in contrast to the large, greasy mutton-fat KPs. - The inflammation is usually acute and less focally organized compared to granulomatous forms.

Q: The best investigation for diagnosing Best disease is

Electrooculogram (EOG). ***Electrooculogram (EOG)*** - **Best disease** (Best vitelliform macular dystrophy) is a genetic disorder affecting the retinal pigment epithelium (RPE), leading to abnormal **light-induced changes in EOG potentials**. - A **significantly reduced or absent Arden ratio** (ratio of light peak to dark trough) on the **electrooculogram (EOG)** is pathognomonic for Best disease, even in early stages when vision may be unaffected. *Nerve conduction study (Electroneurogram)* - A **nerve conduction study** measures the speed and strength of electrical signals as they travel through peripheral nerves. - This test is used for diagnosing conditions affecting **peripheral nerves**, such as neuropathies, and has no relevance to retinal disorders. *Electroretinogram (ERG)* - An **electroretinogram (ERG)** measures the electrical responses of the **photoreceptors and inner retinal cells** to light stimulation. - While ERG is useful in diagnosing various retinal disorders, it usually shows a **normal or nearly normal result in Best disease**, as the primary defect is in the RPE and not the photoreceptors themselves early in the disease course. *Electroencephalogram (EEG)* - An **electroencephalogram (EEG)** records the electrical activity of the **brain**. - It is primarily used to diagnose conditions like **epilepsy, sleep disorders**, and other neurological conditions affecting brain function, and has no utility in diagnosing retinal diseases.

Question 1

What is the most common complication of pars planitis?

Accepted Answer

Cataract (clouding of the lens)

Answer

Retinal detachment (separation of retina)

Answer

Cystoid macular edema (swelling of central retina)

Answer

Glaucoma (increased intraocular pressure)

Question 2

What condition is characterized by cherry red spot at the macula with retinal whitening?

Accepted Answer

CRAO

Answer

CRVO

Answer

Diabetic retinopathy

Answer

Syphilitic retinopathy

Question 3

What is the first clinical sign observed in a patient with anterior uveitis?

Accepted Answer

Presence of aqueous flare

Answer

Presence of hypopyon

Answer

Presence of miosis

Answer

Presence of keratic precipitates

Question 4

Foster's Fuchs spots are specifically associated with which condition?

Accepted Answer

Myopia

Answer

Astigmatism

Answer

Hypermetropia

Answer

Presbyopia

Question 5

Shaffer's sign is seen in ?

Accepted Answer

Retinal detachment

Answer

Acute angle-closure glaucoma

Answer

Diabetic retinopathy

Answer

Age-related macular degeneration

Question 6

What is Eales disease?

Accepted Answer

Recurrent periphlebitis retinae

Answer

Recurrent optic neuritis

Answer

Recurrent papilloedema

Answer

None of the options

Question 7

Hemorrhage in the vitreous humour is caused by all of the following except:

Accepted Answer

Glaucoma

Answer

Diabetes mellitus

Answer

CRVO

Answer

Trauma

Question 8

Which ophthalmological investigation is most appropriate for detailed visualization of the fundus at close range?

Accepted Answer

Direct ophthalmoscopy

Answer

Retinoscopy

Answer

Indirect ophthalmoscopy

Answer

Oblique illumination test

Question 9

Large, white keratic precipitates (mutton-fat KPs) are characteristically seen in?

Accepted Answer

Granulomatous uveitis

Answer

Hemorrhagic uveitis

Answer

Old healed uveitis

Answer

Acute anterior uveitis

Question 10

The best investigation for diagnosing Best disease is

Accepted Answer

Electrooculogram (EOG)

Answer

Nerve conduction study (Electroneurogram)

Answer

Electroretinogram (ERG)

Answer

Electroencephalogram (EEG)

Diseases of the Retina — MCQs

Diseases of the Retina — MCQs

On this page

Practice by Chapter

Want unlimited practice?