Welcome to your 👁️ Corneal & Retinal Causes of Visual Loss Arena — 40 Integrated MCQs
1.
A man treated successfully for a choroidal melanoma several years earlier has preserved vision in the affected eye. He is advised to continue systemic surveillance despite good local tumor control. What is the main reason for this recommendation?
2.
A highly myopic patient notices flashing lights followed by a sudden shower of floaters. Which underlying lesion should be suspected first?
3.
Which retinal finding marks progression from non-proliferative to proliferative diabetic retinopathy?
4.
A 19-year-old student has progressively increasing myopia and irregular astigmatism with frequent changes in spectacle prescription. Retinoscopy shows a scissoring reflex. Which diagnosis is most likely?
5.
A 58-year-old man with poorly controlled hypertension has generalized retinal arteriolar narrowing and arteriovenous crossing changes. Which underlying process best explains these findings?
6.
Which investigation evaluates the overall electrical response of retinal photoreceptors and is useful in suspected retinitis pigmentosa?
7.
A 32-year-old man with inherited retinal degeneration reports progressive difficulty navigating at night and narrowing of peripheral vision. Central acuity remains useful. Which cellular sequence best explains this pattern?
8.
Which feature best distinguishes a typical corneal dystrophy from a corneal degeneration?
9.
A 58-year-old man with long-standing diabetes has microaneurysms, hard exudates and retinal thickening near the fovea. His central vision has gradually deteriorated. Which pathological process is primarily responsible for his reduced visual acuity?
10.
A patient with long-standing diabetes has retinal microaneurysms, dot-blot hemorrhages and hard exudates but no retinal neovascularization. Which stage best describes these findings?
11.
The major mortality risk associated with choroidal melanoma is related to hematogenous metastasis to which organ?
12.
A patient presents with markedly elevated blood pressure, headache and blurred vision. Fundoscopy shows retinal hemorrhages, hard exudates and bilateral optic-disc swelling. What is the most appropriate management principle?
13.
A 73-year-old man develops abrupt severe monocular visual loss. Retinal arterial occlusion is diagnosed. He has no ocular pain and no history suggesting giant cell arteritis. Which next step is most important after immediate ophthalmic recognition?
14.
A 64-year-old man with poorly controlled hypertension has flame-shaped retinal hemorrhages and cotton-wool spots. Which retinal event is responsible for formation of the cotton-wool spots?
15.
A patient with an ischemic central retinal vein occlusion is being followed closely. Several weeks later, abnormal new vessels develop on the iris. Which complication is he now at greatest risk of developing?
16.
A 60-year-old highly myopic man develops flashes and floaters. Dilated examination reveals a horseshoe retinal tear, but the neurosensory retina has not yet detached. Which intervention is most appropriate to reduce progression to rhegmatogenous retinal detachment?
17.
A 72-year-old man develops sudden profound painless loss of vision in one eye. Fundoscopy shows a pale retina with a cherry-red spot at the fovea. Which diagnosis is most likely?
18.
A diabetic patient develops gradually increasing difficulty reading. Fundoscopy shows only mild peripheral retinopathy, but OCT reveals thickening involving the macula. Which principle best explains why visual acuity can be significantly reduced despite limited peripheral retinal disease?
19.
A 24-year-old woman with keratoconus is reviewed after serial corneal imaging. Her visual acuity is unchanged, but tomography shows increasing inferior corneal steepening and progressive thinning. Which finding most strongly influences the decision to offer corneal collagen cross-linking?
20.
A 69-year-old man with hypertension develops painless visual reduction in one eye. Fundoscopy shows widespread retinal hemorrhages and marked venous tortuosity. OCT demonstrates macular edema. Which treatment is most appropriate for the cause of his current central visual impairment?
21.
A 21-year-old man with progressive keratoconus can no longer obtain satisfactory vision with spectacles. Slit-lamp examination shows corneal thinning without significant central scarring. Which intervention is most appropriate to improve optical quality without replacing the cornea?
22.
Fundus examination of an adult shows a raised pigmented choroidal mass with associated subretinal fluid. Which diagnosis should be considered?
23.
A patient with central retinal artery occlusion has a pale opaque retina surrounding a relatively red fovea. Which anatomical feature best explains preservation of the red appearance at the fovea?
24.
A malnourished child has difficulty seeing in dim light and later develops dry conjunctiva with foamy whitish Bitot spots. Which deficiency best explains these findings?
25.
Which systemic condition must be urgently considered in an older patient with central retinal artery occlusion because the fellow eye may also be threatened?
26.
A 67-year-old man develops painless monocular visual loss. Fundus examination shows dilated tortuous retinal veins and widespread retinal hemorrhages. Which diagnosis is most likely?
27.
A malnourished child initially develops poor dark adaptation. Several months later, examination shows severe corneal dryness and beginning corneal softening. Which management principle is most important to prevent irreversible blindness?
28.
A 55-year-old woman with diabetes develops progressive central visual distortion. OCT demonstrates significant diabetic macular edema. Which treatment directly targets the vascular mediator responsible for increased retinal vascular permeability?
29.
A patient presents with a dense vitreous hemorrhage and symptoms suspicious for retinal detachment. The fundus cannot be visualized adequately. Which investigation is most useful for determining whether the retina is detached?
30.
A patient with chronic ocular inflammation develops a horizontal grey-white opacity across the exposed interpalpebral cornea. The lesion is caused by superficial calcium deposition. Which condition is most likely?
31.
A patient with very high blood pressure has retinal hemorrhages, hard exudates and swelling of the optic disc. Which finding indicates particularly severe hypertensive disease?
32.
A diabetic patient complains of progressive blurring of central vision. Fundus examination suggests macular involvement. Which investigation is most useful for demonstrating retinal thickening and macular edema?
33.
A 62-year-old woman reports blurred vision that is worse on waking and improves later in the day. Slit-lamp examination shows corneal edema due to endothelial dysfunction. Which mechanism best explains the visual disturbance?
34.
A patient describes a dark curtain gradually spreading across the visual field of one eye. Which condition best explains this symptom?
35.
A patient with proliferative diabetic retinopathy has extensive areas of retinal capillary non-perfusion and new vessels at the optic disc. Panretinal photocoagulation is advised. What is the principal therapeutic effect of this treatment?
36.
A young patient with progressive keratoconus is being assessed for a procedure intended primarily to slow further corneal ectasia. Which treatment is most appropriate?
37.
A patient with proliferative diabetic retinopathy develops sudden marked visual loss due to bleeding from fragile new retinal vessels. Which complication is most likely?
38.
A young adult reports increasing difficulty seeing at night followed by progressive narrowing of peripheral vision. Fundoscopy shows bone-spicule pigmentation. Which diagnosis is most likely?
39.
A patient with advanced proliferative diabetic retinopathy develops fibrovascular tissue that contracts and pulls the retina away from the retinal pigment epithelium. Which type of retinal detachment has occurred?
40.
A 66-year-old woman is found to have a raised choroidal lesion with subretinal fluid. Ultrasonography confirms a localized intraocular mass suitable for eye-preserving therapy. Which management option is most appropriate?
