The DL-800 suits optometry practices, ophthalmology clinics, optical dispensaries, and lens-finishing benches. An operator seats a lens on the stage, follows the alignment cross target, reads sphere, cylinder, axis, addition and prism from the tilting colour screen and records the result against the patient file. Framed single-vision, multifoc, al, and progressive lenses, unprocessed lens, es, and contact lenses all fit within the working range, so one instrument serves the whole counter. Display steps of 0.01, 0.12 or 0.25 D let the same screen suit a quick order check or a detailed power reading.
For a patient's current spectacles, the readings give the starting prescription for the next examination. At the dispensing stage, the same readings check a finished pair against the order, covering power, cylinder axis, addition and prism. Progressive lenses use a graphical alignment guide that locates the lens, detects the progressive design, and stores the far and near powers in one pass. Together, the stage and stand cover both lens families without changing instruments. You can read unprocessed lenses up to 100 mm in diameter before cutting, and the accessory box supplies marking cartridges and a contact lens holder for marking positions.
In a refraction room, the RS-232C port connects the DL-800 to the DR-900 digital refractor. Pressing the Set button on the DR-900 moves the objective data to the refractor head, so the examiner starts from the measured lens powers. Because the stored far and near values travel with the data, the refractor head starts from the same figures the operator read on the DL-800.