Welcome to your 🌫️ Cataract: Types, Pathogenesis, Complications & Management Arena — 40 Integrated MCQs
1.
A 76-year-old woman with a long-standing cataract develops severe ocular pain, redness and rapidly worsening vision. Examination shows a swollen lens, shallow anterior chamber and markedly raised intraocular pressure. Which sequence best explains the pressure rise?
2.
A relatively small central posterior lens opacity causes marked glare and difficulty with near work in a 56-year-old patient. Which pathological change most closely corresponds to this cataract pattern?
3.
During examination of a patient with progressive painless visual loss, the red reflex is markedly reduced in the affected eye and a dense lens opacity is seen. Why has the red reflex become diminished?
4.
Why does an established cataract reduce visual clarity?
5.
Age-related oxidative damage alters crystallin proteins within the lens. Which subsequent event most directly converts this biochemical change into loss of visual clarity?
6.
Which mechanism best distinguishes phacomorphic glaucoma from phacolytic glaucoma?
7.
Which factor is most important when deciding whether an uncomplicated cataract requires surgery?
8.
Which symptom pattern is most consistent with an uncomplicated age-related cataract?
9.
Which age-related process contributes most directly to loss of lens transparency in cataract?
10.
Slit-lamp examination of a 73-year-old man shows a dense yellow central nucleus together with peripheral radial cortical spokes. Which description best fits this lens?
11.
A 69-year-old woman reports fluctuating glare, especially while facing headlights at night. Slit-lamp examination reveals radial wedge-shaped opacities extending inward from the lens periphery. Which process best accounts for these optical symptoms?
12.
An elderly patient with a long-standing cataract develops sudden ocular pain, redness and raised intraocular pressure. Examination shows a swollen lens and a shallow anterior chamber. Which complication is most likely?
13.
A patient with a long-standing untreated cataract is found to have liquefaction of cortical material, reduction in lens volume and a wrinkled capsule. Which stage of cataract progression is most consistent with these findings?
14.
A 58-year-old woman has increasing glare and difficulty reading despite only a modest reduction in visual acuity. Slit-lamp examination shows a small opacity immediately anterior to the posterior lens capsule. Her symptoms become worse in bright illumination. Which mechanism best explains this change?
15.
A patient undergoes technically successful cataract extraction with intraocular lens implantation. The optical media are clear postoperatively, but visual acuity remains poor because of pre-existing macular disease. Which principle best explains the outcome?
16.
A 67-year-old man reports gradual painless blurring of vision. Examination shows loss of transparency of the crystalline lens. Which diagnosis best explains this finding?
17.
A 62-year-old woman complains of marked glare and difficulty with near work. Examination shows a small central opacity immediately in front of the posterior lens capsule. Which diagnosis is most likely?
18.
Two elderly patients with advanced cataracts present with raised intraocular pressure. The first has an enlarged lens and a shallow anterior chamber. The second has a hypermature lens, an open drainage angle and protein-laden macrophages. Which statement best distinguishes their mechanisms?
19.
Which property of the normal crystalline lens is most important for transmitting light clearly toward the retina?
20.
A patient has a cataract causing only moderate subjective visual difficulty, but the opacity prevents adequate examination and planned treatment of significant retinal disease. Which management principle is most appropriate?
21.
An elderly patient with an advanced cataract develops ocular pain, redness, photophobia and anterior chamber inflammatory cells. There is evidence that altered lens material has escaped from its normal compartment. Which process best explains the inflammation?
22.
A 66-year-old patient with suspected cataract undergoes refraction before a decision about surgery is made. What is the most useful purpose of this step?
23.
A histological discussion of the normal lens emphasizes orderly fibres, soluble crystallins, absence of vessels and tightly controlled hydration. Why are these features functionally important?
24.
A 79-year-old man with a hypermature cataract presents with pain and reduced vision. Intraocular pressure is elevated, the drainage angle is not mechanically closed, and protein-laden macrophages are present in the anterior chamber. Which mechanism is most likely responsible?
25.
A patient with nuclear cataract notices temporary improvement in near vision despite progressive reduction in distance vision. Which change best explains this finding?
26.
A patient with age-related cataract has radial, spoke-like opacities extending from the peripheral lens toward the centre. Which type is most likely?
27.
A 65-year-old patient has mild cataract but continues to perform routine daily activities comfortably. Which initial management is most appropriate?
28.
A 70-year-old woman has cataract with significant difficulty reading and performing daily activities despite updated spectacles. What is the definitive treatment?
29.
A lens is completely opaque on examination in a patient with advanced age-related cataract. Which term best describes this stage?
30.
A patient with an advanced cataract develops anterior-segment inflammation after altered lens material escapes from the lens. Which complication is most likely?
31.
Which statement best describes the role of medical treatment in established age-related cataract?
32.
During phacoemulsification, the main therapeutic purpose is to:
33.
A 74-year-old woman has a dense cataract that prevents adequate visualization of the fundus. Cataract extraction is being considered. Why is assessment of the posterior segment important before surgery?
34.
A 63-year-old professional driver has visual acuity of 6/12 in one eye but severe glare from a cataract makes night driving unsafe. Refraction produces little functional improvement. Which factor should most strongly guide the decision regarding surgery?
35.
Age-related dysfunction of lens fibre membranes causes disturbed electrolyte balance and entry of water into cortical fibres. Which morphological change is expected?
36.
A 72-year-old patient has progressive visual blurring. Slit-lamp examination shows yellow-brown hardening of the central part of the lens. Which type of age-related cataract is most likely?
37.
One patient undergoes phacoemulsification and another undergoes manual small-incision cataract surgery. Although the operative methods differ, which therapeutic principle is shared by both procedures?
38.
A hypermature cataract leaks altered lens proteins into the anterior chamber. Macrophages containing this material obstruct aqueous outflow. Which complication can result?
39.
A 60-year-old man has an early cataract detected during routine examination. His daily activities are unaffected, and satisfactory vision is achieved after updating his spectacles. Which management approach is most appropriate?
40.
A 71-year-old man has slowly progressive distance-vision loss. Several years earlier he noticed that he could read without his usual near glasses, but this temporary benefit has now disappeared. His lens nucleus is dense and yellow-brown. Which underlying change best explains this clinical course?
