Зображення 01284. Cataract (dull red reflex)

Minor opacifications of the crystalline lens are best seen by examining the red reflex through ophthalmoscopy. The pupillary aperture is viewed through an ophthalmoscope by using a lens of + 10 dioptres (the examiner’s own refractive error should be added to the + 10 dioptres). The viewing distance is about 5 to 10 cm.