The CP-9 serves refraction rooms in optometry practices and ophthalmology clinics that test distance vision at 2.9 to 6.1 m, with 5 m as the standard. Its main argument is adaptability. An optical zoom lets the installation distance vary, so the projector fits rooms of different lengths without changing equipment.
A white LED provides a brighter, clearer chart display. The LED has a long life, lowering running costs for daily examinations, and its brightness is adjustable, so it needs little maintenance. The chart stays easy to read across a full list of patients, and the examiner spends little time on upkeep. Brightness control and a long-life LED reduce the attention the projector needs between consultations, which suits a unit used every day.
Polarisation provides the dissociation for binocular and stereoscopic tests with polarised filters. The same projector therefore covers the distance check and the binocular work that follows it. A wireless remote operates the projector, and the control panel of a NIDEK automatic refractor, the RT-3100 or RT-6100, can also operate it.
The CP-9 is described as user-friendly and suited to a variety of facilities, and it works particularly well with other NIDEK refraction products. It operates on 100 to 240 V, 50/60 Hz, and consumes 60 VA. The projector measures 188 × 300 × 192 mm and weighs 3.1 kg, keeping it compact for a busy consulting room. Because the supply covers 100 to 240 V, the same model suits different mains.