Figure 5

Aperture segments (see Figure 1 - yellow rectangle) from the slit lamp projected through an accessory lens (+90D, 20x magnification) onto the fundus. This setting may be used for macular examination with less patient’s blinding, steering of the patient’s view and fundus perimetry.- top: the patient sees both semi-circles, − mid: the small semi-circle (within the blind spot) is invisible to the patient,- bottom: inner parts of both semi-circles are hidden for the patient.