How does indirect ophthalmoscopy magnification compare to direct ophthalmoscopy?

• A. Higher magnification
• B. Similar magnification
• C. Lower magnification typically
• D. No magnification

Answer: (C)

In indirect ophthalmoscopy the eye is examined through a separate condensing lens held in front of the eye. This setup forms a real image of the retina that you view from a distance, which means the overall angular magnification is smaller than when you look directly through the ophthalmoscope itself. Clinically, indirect ophthalmoscopy provides a much larger field of view (and with binocular indirect, good depth perception) but the retinal image is less magnified. So, the magnification you get with indirect ophthalmoscopy is typically lower than with direct ophthalmoscopy. This trade-off is why indirect is favored for surveying the peripheral retina, while direct ophthalmoscopy is often used for detailed central examination.