Bsc (Hons) Optometry (Monthly Test- Jan 2026)

Instructions

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Candidates are requested to check their internet connection before starting the test.
After pressing submit key you will be moved to next question. After submission you can’t revert back to previous question, for the same, candidate must fully satisfy themselves about the accuracy of the answer before submitting.
There will be no negative marking.
Total time duration for this test is 10 minutes, once the timer is up the test will end automatically so candidates are requested to follow the timer.
All questions carry equal marks.

Good Luck!

Regards
PIO
Al- Shifa trust

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1 / 30

Category: Contact Lens

1) Long-term orthokeratology wear primarily alters which corneal layer?

Endothelium

Bowman’s membrane

Epithelium

Stroma

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Category: Contact Lens

2) Which contact lens design provides the best optical quality in irregular corneas?

Soft spherical lenses

Soft toric lenses

RGP lenses

Daily disposable lenses

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Category: Contact Lens

3) A decentered orthokeratology lens most commonly results in:

Improved vision

Induced astigmatism

Reduced tear exchange

Corneal edema

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Category: Contact Lens

4) In orthokeratology, the “treatment zone” refers to the area of:

Maximum peripheral steepening

Central corneal flattening

Mid-peripheral clearance

Lens edge lift

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Category: Contact Lens

5) Which factor MOST influences success in presbyopic multifocal contact lens fitting?

Pupil size

Corneal thickness

Axial length

Intraocular pressure

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Category: Contact Lens

6) The ideal RGP lens fit in keratoconus aims to minimize:

Apical touch and peripheral clearance

Peripheral touch and apical clearance

Corneal hypoxia only

Lens movement

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Category: Contact Lens

7) The first step in contact lens fitting for keratoconus is:

Trial lens fitting

Corneal topography

Subjective refraction

Tear film evaluation

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Category: Contact Lens

8) In presbyopic patients, contrast sensitivity is MOST likely reduced with:

Single vision lenses

Monovision correction

Spectacles

RGP lenses

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Category: Contact Lens

9) The most common complication associated with orthokeratology is:

Cataract formation

Microbial keratitis

Retinal detachment

Uveitis

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Category: Contact Lens

10) A well-centered orthokeratology lens typically shows which fluorescein pattern?

Central pooling

Central touch with mid-peripheral pooling

Uniform pooling

Excessive edge clearance

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Category: Contact Lens

11) Reverse geometry lenses are characteristic of:

Soft toric lenses

Multifocal lenses

Orthokeratology lenses

Scleral lenses

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Category: Contact Lens

12) The main visual benefit of orthokeratology is:

Permanent correction of myopia

Daytime spectacle-free vision

Improved near vision only

Reduced accommodative demand

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Category: Contact Lens

13) Orthokeratology corrects myopia primarily by:

Increasing corneal thickness

Steepening the central cornea

Flattening the central cornea

Changing axial length permanently

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Category: Contact Lens

14) A key indication for scleral lenses is:

Simple myopia

Presbyopia

Severe corneal irregularity

Mild astigmatism

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Category: Contact Lens

15) The “piggyback” lens system consists of:

Two soft lenses

Two RGP lenses

Soft lens under an RGP lens

RGP lens under a scleral lens

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Category: Contact Lens

16) Which contact lens is preferred in advanced keratoconus with poor RGP tolerance?

Soft toric lens

Piggyback system

Daily disposable lens

Orthokeratology lens

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Category: Contact Lens

17) The most common lens fitting philosophy for keratoconus RGP lenses is:

Apical bearing

Apical clearance

Three-point touch

Flat fitting

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Category: Contact Lens

18) In keratoconus, rigid gas permeable lenses improve vision mainly by:

Flattening the cornea

Increasing tear secretion

Masking corneal irregularities with the tear lens

Reducing intraocular pressure

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Category: Contact Lens

19) A disadvantage of monovision correction is reduced:

Visual acuity

Tear stability

Depth perception

Contrast sensitivity only

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Category: Contact Lens

20) Monovision contact lens correction involves:

Both eyes corrected for distance

Both eyes corrected for near

One eye for distance and the other for near

Alternating correction each day

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Category: Contact Lens

21) Simultaneous vision in presbyopic contact lenses is achieved by:

Alternating near and distance zones

Using prism ballast

Providing both near and distance focus at the same time

Monocular fitting

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Category: Contact Lens

22) Which contact lens option is MOST suitable for early presbyopia?

Single vision distance lenses

Bifocal spectacles

Multifocal contact lenses

Scleral lenses

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Category: Contact Lens

23) Minus power soft contact lenses tend to be:

Thicker centrally

Thicker peripherally

Uniform in thickness

Thicker at the optic zone only

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Category: Contact Lens

24) In low to moderate myopia, the preferred initial base curve selection for a soft contact lens is usually based on:

Keratometry readings

Horizontal visible iris diameter

Manufacturer’s guidelines

Pachymetry values

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Category: Contact Lens

25) Which material is most commonly used for modern orthokeratology lenses?

PMMA

Hydrogel

Silicone hydrogel

High Dk rigid gas permeable material

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Category: Contact Lens

26) Orthokeratology lenses are typically worn:

During daytime only

Alternating day and night

Overnight

Only for a few hours weekly

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Category: Contact Lens

27) A common early symptom of keratoconus is:

Sudden vision loss

Night blindness

Progressive irregular astigmatism

Diplopia

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Category: Contact Lens

28) Presbyopia is primarily caused by:

Increase in axial length

Loss of lens elasticity

Corneal flattening

Reduced tear secretion

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Category: Contact Lens

29) Which type of contact lens is most commonly prescribed for simple myopia?

Rigid Gas Permeable lenses

Soft spherical lenses

Hybrid lenses

Scleral lenses

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Category: Contact Lens

30) The primary goal of contact lens fitting in myopia is to:

Reduce corneal curvature

Improve near vision

Provide clear distance vision

Correct binocular vision anomalies