The Function Of The Instrument

Reflective instrument structure: optometry instrument mainly consists of two parts, one for the CD-ROM (commonly known as "lung", "bull"), the other part of the visual standard, divided into far and near two.

CD-ROM

The disc consists of five parts, Optometry Instruments the viewing hole, the main lens group, the built-in auxiliary mirror, the external auxiliary mirror and the adjustment part.

As the hole

The measured eye through the observation of the hole, in the hole around the hole with a cylindrical axis of the scale, easy to use in the cross cylindrical mirror to adjust the axial

The main lens group main lens group includes ball mirror, Optometry Instruments cylindrical mirror optometry instrument optometry process

The use of integrated optometry instrument for optometry, is divided into two main steps: instrument adjustment, refractive examination, which refractive examination, Optometry Instruments including monocular examination, eyes balance.

Instrument adjustment

After opening the integrated optometry equipment, the following adjustments are required:

Adjust the vertical balance handwheel: Center the bubbles in the balance tube (or balance tank)

Through the computer optometry instrument or retinoscopy obtained by the objective inspection photometric into the integrated optometry equipment. As a result of comprehensive optometry instrument is not a positive cylinder, so the objective inspection, such as is the positive cylinder, need to "sum, change the number of shaft" into a negative cylinder.

From the history of the development of the instrument and the name of the change can be found, comprehensive optometry instrument can not only be used for refractive error check, but also has to check the extracorporeal muscle refractive error check, but also has the function of eye muscle function, Optometry Instruments Visual workers of the basic inspection tool, its role is irreplaceable.

As a result of the integrated optometry instrument will be almost all the lenses in the lens into the wheel system, so the clinical operation to provide more than the use of audition mirror optometry more efficient and faster lens conversion possible, through a simple knob , Optometry Instruments And soon the need to convert the lens, especially for complex subjective refraction; and because all optometry instruments are in a closed state, so the inspectors do not have to worry about dirty lenses.

The use of optometry equipment

Steps

Before testing the subject, should first understand his history, routine eye examination, retinoscopy or computer optometry data, check the measurement results and other information.

① seized by the seizure of the chair, the instrument positioning in front of the patient, naked eye facing the optometry head, adjust the height of the chair or table, so that the height of the subject and the optometrist height match.

② with alcohol disinfection after the care, Optometry Instruments so that the patient forehead against the top.

③ Turn the ball knob so that the dial, cylinder and axial knob to zero degrees. Turn the assist knob to O or O, the prism and cross-cylinder are placed in the initial position and can not be added to the test window.

④ turn the horizontal button so that the bubble in the center position, to ensure that the instrument at a level.

⑤ Turn the interpupillary distance knob so that the PD value is consistent with the interpupillary distance of the subject. Look at the distance when the pupil on the outside.

⑥ adjust the height of the optometry head, so that the eyes were seized in the center of the hole.

⑦ Turn the forehead button to observe and adjust the distance between the cornea and the lens. Observation window, the long line represents 13.75mm, three short-term interval of 2mm. If the corneal vertex is not on the long line, display the degree plus the correction value, only the actual degree. When the degree of display is (+), the correction value is a table, the display degree is (-), the correction value with b table.

⑧ to indoor lighting, tune to darker. Look far away, do not turn on the headlights.

⑨ look near, pupil from the bar breaking to the inside, open the headlights. Put down the test lever and move the myopia card to the desired position.

⑩ When using cross-cylinder inspection, pay attention to the axial direction of the cross-cylinder to adjust the axial direction of the instrument cylinder.