Vision and Ophthalmology Study Guide 2026
Everything you need to pass the Vision and Ophthalmology exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📚 Vision and Ophthalmology Topics to Study (21)
✍️ Sample Vision and Ophthalmology Questions & Answers
1. A patient who is myopic has a far point located:
A myopic eye is too long or too powerful, focusing parallel rays in front of the retina; the far point is at a finite distance in front of the eye.
2. Irregular astigmatism, unlike regular astigmatism, cannot be fully corrected by:
Irregular astigmatism has principal meridians that are not perpendicular and cannot be fully corrected with spectacle cylindrical lenses; rigid lenses neutralize the irregular surface.
3. Electroretinography (ERG) measures the electrical response of which cells in the retina?
The full-field ERG records mass electrical responses: the a-wave primarily reflects photoreceptor function and the b-wave reflects bipolar/Müller cell activity.
4. Selective laser trabeculoplasty (SLT) reduces IOP by:
SLT uses a 532 nm frequency-doubled Nd:YAG laser to selectively target melanin-containing trabecular cells, triggering a biological response that improves aqueous outflow without coagulative damage.
5. Dilute pilocarpine 0.1% is used diagnostically for which condition?
Adie's tonic pupil shows denervation supersensitivity to dilute pilocarpine (0.1%), constricting abnormally, while a normal pupil shows minimal response.
6. A-scan ultrasonography in ophthalmology is primarily used for:
A-scan ultrasonography measures the axial length of the eye, which is essential for calculating intraocular lens (IOL) power before cataract surgery.