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21. Mirage is an example of: A) Reflection of light B) Refraction of light C) Total internal reflection of light D) Scattering of light Click "Show more" to see the answer and explanation. Show more Answer: C) Total internal reflection of lightExplanation:Mirages occur due to the total internal reflection of light rays in layers of air at varying temperatures.Note: Prepare for your Ophthalmic Officer Exam by DHS under experience Samir Sutradhar sir. Enroll in our Course “MCQs in Optometry” that will give you: Basic Notes, Fundamental Videos, Subjectwise MCQs, PDF MCQs, Previous Years MCQs, RAPID Access Guide for Optometrists PDF Book, Group Chat, Live Support. Show less . . 22. What will be the power of a concave lens of focal length 5 meters? A) 5D B) -5D C) 0.2D D) -0.2D Click "Show more" to see the answer and explanation. Show more Answer: D) -0.2DExplanation:Lens power P= 1/f (Here f = focal length)So, Power P = 1/5 or 0.2DAs concave lenses are diverging lens so final power will be: -0.20D Show less . . 23. A focimeter cannot measure the: A) Amplitude of accommodation B) Dioptric vertex power C) Prism of a lens D) Cylindrical axis Click "Show more" to see the answer and explanation. Show more Answer: A) Amplitude of accommodationExplanation:A focimeter is used to measure lens power, prism, and cylindrical axis, but it cannot measure the amplitude of accommodation, which requires dynamic refraction tests. Show less . . 24. CR-39 (Columbia resin 39) is used for/as: A) Anti-glaucoma medication B) Spectacle lens manufacture C) Ink in OCT machine printers D) Antibiotic eyedrops Click "Show more" to see the answer and explanation. Show more Answer: B) Spectacle lens manufactureExplanation:CR-39 is a lightweight, durable plastic material commonly used for making spectacle lenses.Note: Prepare for Ophthalmic Officer Exam by DHS with our course “MCQs in Optometry”. This course provides: Basic Notes, Fundamental Videos, Subjectwise MCQs, PDF MCQs, Previous Years MCQs, RAPID Access Guide for Optometrists PDF Book, Group Chat, Live Support. Show less . . 25. In objective refraction: A) Accommodation is stimulated if the patient stares at the light from the retinoscope B) 'With' motion occurs in high myope if the sleeve of the retinoscope is placed in the plano mirror position C) Movement of the reflex decreases as the neutralization point is near D) The power of the working distance lens in diopters is proportional to the working distance in meters Click "Show more" to see the answer and explanation. Show more Answer: A) Accommodation is stimulated if the patient stares at the light from the retinoscopeExplanation:In objective refraction, the examiner measures refractive errors without requiring responses from the patient. If the patient fixates directly on the retinoscope light, it can stimulate accommodation, especially in young patients with active focusing mechanisms. This can lead to inaccurate results, and accommodation must be relaxed by having the patient focus on a distant object or using cycloplegic drops. Show less . . 26. Which of the following tests does not depend on binocular vision? A) Maddox rod B) Worth's four dots test C) Duochrome tests D) Bagolini's test Click "Show more" to see the answer and explanation. Show more Answer: C) Duochrome testsExplanation:Duochrome test is a monocular test used to determine the spherical correction during refraction and does not require binocular vision. Show less . . 27. The following is the power cross of a patient examined at 2/3 meters (before correcting for the working distance). The correct statement is: A) When a streak retinoscopy is used to neutralise the eye at 30°, the power of the lens needed is +4.00 B) If the patient were to accommodate, the power cross will have a higher plus power C) If a +5.00DS lens is placed in the trial frame, a -1.00DC is required to neutralise the eye at 120° D) The lens required for correcting this patient's refraction if the working distance is 1/2 m can be +3.00/-1.00 X 30° Click "Show more" to see the answer and explanation. Show more Answer: C) If a +5.00DS lens is placed in the trial frame, a -1.00DC is required to neutralise the eye at 120° Explanation:Adding the working distance power (+1.50D for 2/3 m) helps compute the trial lens requirement. Show less . . 28. A 42-year-old myopic man recently changes his glasses and finds them uncomfortable despite having a visual acuity of 6/6 in both eyes. The following may be responsible: A) Scratchy lens B) Onset of presbyopia C) Change of axis D) Decentering of the lens Click "Show more" to see the answer and explanation. Show more Answer: B) Onset of presbyopiaExplanation:Myopes often experience discomfort due to the onset of presbyopia, especially in their early 40s.Note: Enroll in our Course “MCQs in Optometry” to prepare for Ophthalmic Officer Exam by DHS under Experienced Samir Sutradhar sir. This course will give you: Basic Notes, Fundamental Videos, Subjectwise MCQs, PDF MCQs, Previous Years MCQs, RAPID Access Guide for Optometrists PDF Book, Group Chat, Live Support. Show less . . 29. The longest extraocular muscle is: A) Superior oblique B) Inferior oblique C) Superior rectus D) Inferior rectus Click "Show more" to see the answer and explanation. Show more Answer: A) Superior obliqueExplanation:The superior oblique muscle is the longest extraocular muscle. It originates from the sphenoid bone, passes through the trochlea (a pulley-like structure), and then inserts onto the eye. Its length and unique structure allow it to perform torsional movements (intorsion) along with depression and abduction of the eye. Show less . . 30. Diameter of the optic disc is: A) 1.5 mm B) 3.5 mm C) 2.5 mm D) 5 mm Click "Show more" to see the answer and explanation. Show more Answer: A) 1.5 mmExplanation:The average diameter of the optic disc is approximately 1.5 mm. Show less . . 31. Schwalbe's line forming part of the angle of the anterior chamber is the prominent end of: A) Sclera B) Descemet's membrane of cornea C) Anterior limit of trabecular meshwork D) Posterior limit of trabecular meshwork Click "Show more" to see the answer and explanation. Show more Answer: B) Descemet's membrane of corneaExplanation:Schwalbe’s line marks the termination of Descemet’s membrane at the corneal periphery. Show less . . 32. Capsule of the crystalline lens is thinnest at: A) Anterior pole B) Posterior pole C) Equator D) None of the above Click "Show more" to see the answer and explanation. Show more Answer: B) Posterior poleExplanation:The posterior capsule of the lens is the thinnest, measuring around 4 µm.Note: Our Course “MCQs in Optometry” with 95% success rate will help to prepare for Ophthalmic Officer Exam by DHS. Prepare under experienced Samir Sutradhar sir. Show less . . 33. The youngest lens fibres are present in: A) Central core of the lens nucleus B) Outer layer of the nucleus C) Deeper layer of the cortex D) Superficial layer of the cortex Click "Show more" to see the answer and explanation. Show more Answer: D) Superficial layer of the cortexExplanation:The most recently formed lens fibres are located in the superficial cortex. Show less . . 34. Smallest diameter of the eyeball is: A) Vertical B) Horizontal C) More than 24 mm D) Anteroposterior Click "Show more" to see the answer and explanation. Show more Answer: A) VerticalExplanation:The human eyeball has three major diameters:Horizontal diameter: ~24 mm (widest).Anteroposterior diameter: ~23.5 mm.Vertical diameter: ~23 mm (smallest).The vertical dimension is slightly shorter than the horizontal, giving the eyeball a slight asymmetry in shape. Show less . . 35. Anterior segment of the eyeball includes structures lying in front of the: A) Iris B) Crystalline lens C) Vitreous body D) Corne Click "Show more" to see the answer and explanation. Show more Answer: C) Vitreous bodyExplanation:The anterior segment of the eyeball refers to the part of the eye in front of the vitreous body, including:CorneaAnterior and posterior chambers (filled with aqueous humor)IrisCiliary bodyCrystalline lens.The vitreous body lies in the posterior segment of the eye, separating it from the anterior segment. Show less . . 36. A one-month-old baby is brought with complaints of photophobia and watering. Clinical examination shows normal tear passages and clear but large cornea. The most likely diagnosis is: A) Congenital dacryocystitis B) Retinopathy of prematurity C) Keratoconus D) Congenital glaucoma Click "Show more" to see the answer and explanation. Show more Answer: D) Congenital glaucomaExplanation:Congenital glaucoma presents with large cornea (buphthalmos), photophobia, and epiphora.Note: Prepare for your Ophthalmic Officer Exam by DHS under experience Samir Sutradhar sir. Enroll in our Course “MCQs in Optometry” that will give you: Basic Notes, Fundamental Videos, Subjectwise MCQs, PDF MCQs, Previous Years MCQs, RAPID Access Guide for Optometrists PDF Book, Group Chat, Live Support. Show less . . 37. Schirmer's test is used for diagnosing: A) Dry eye B) Infective keratitis C) Watering eyes D) Horner's syndrome Click "Show more" to see the answer and explanation. Show more Answer: A) Dry eyeExplanation:Schirmer's test measures tear production to diagnose dry eye. Show less . . 38. You have been referred a case of open-angle glaucoma. Which of the following would be an important point in diagnosing the case? A) Shallow anterior chamber B) Optic disc cupping C) Narrow angle D) Visual acuity and refractive error Click "Show more" to see the answer and explanation. Show more Answer: B) Optic disc cuppingExplanation:Open-angle glaucoma is characterised by optic disc cupping, visual field loss, and increased intraocular pressure. Show less . . 39. Optic nerve function is best studied by: A) Direct Ophthalmoscope B) Retinoscope C) Perimetry D) Gonioscopy Click "Show more" to see the answer and explanation. Show more Answer: C) PerimetryExplanation:Perimetry tests the visual fields, which is an important assessment of optic nerve function. Show less . . 40. The best treatment for amblyopia is: A) Orthoptic exercises B) Occlusion C) Surgery D) Best treat after age 10 years Click "Show more" to see the answer and explanation. Show more Answer: B) OcclusionExplanation:Occlusion therapy (patching the better eye) is the gold standard treatment for amblyopia, especially in early childhood.Note: Prepare for Ophthalmic Officer Exam by DHS with our course “MCQs in Optometry”. This course provides: Basic Notes, Fundamental Videos, Subjectwise MCQs, PDF MCQs, Previous Years MCQs, RAPID Access Guide for Optometrists PDF Book, Group Chat, Live Support. Show less . . Blog Description: Are you preparing for the Ophthalmic Officer Exam and looking for comprehensive guidance to ace it? In this blog, we present 20 previous year MCQs carefully selected from the Ophthalmic Officer Exam Previous Year Question Papers, designed to help you understand the Ophthalmic Officer Exam Pattern and boost your preparation. Whether you're exploring the Ophthalmic Officer Exam Syllabus or searching for the best Ophthalmic Officer Exam Study Material, this blog has got you covered. We also provide insights into the Ophthalmic Officer Exam Eligibility Criteria, guiding you on how to apply through the Ophthalmic Officer Exam Application Form and stay updated on the Ophthalmic Officer Exam Recruitment Notification. Don't miss important updates like the release of the Ophthalmic Officer Exam Admit Card, Ophthalmic Officer Exam Dates, and Ophthalmic Officer Exam Result to ensure you're always one step ahead. This blog is a must-read for aspirants aiming to succeed in the Ophthalmic Officer Exam with ease. Dive in to test your knowledge and enhance your preparation today! Tags: Ophthalmic Officer Exam Syllabus, Ophthalmic Officer Exam Eligibility Criteria, Ophthalmic Officer Exam Previous Year Question Papers, Ophthalmic Officer Exam Pattern, Ophthalmic Officer Exam Study Material, Ophthalmic Officer Exam Recruitment Notification, Ophthalmic Officer Exam Application Form, Ophthalmic Officer Exam Admit Card, Ophthalmic Exam Officer Exam Dates, Ophthalmic Officer Exam Result, Check Our Courses: Ophthalmic Instrumentation, Clinical Refraction, Contact Lens, Binocular Vision, Dispensing Optics, MCQs in Optometry Download our App "Optometry Notes & MCQs" from Google Play Store.

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