1, Consultation
1, Basic courtesy greetings, age, occupation, living habits.
2, visual status, history of wearing glasses, family history of eye diseases.
3, history of eye diseases (plus membrane, conjunctiva, crystalline, fundus), any systemic diseases.
4, original spectacle wear
5, purpose of spectacle use, visual acuity requirements.
Two, objective examination
Check shadow or computerized optometry
Three, optometry preparations
1, PD measurement, pupil ruler or pupilometer
2, naked eye vision and original glasses corrected visual acuity examination and record
3, detection of the primary eye
4, optometry equipment cleaning, disinfection, ensure that lung head lenses are clean and clear.
5, Zeroing of lung head data (auxiliary lenses, spherical lenses, cylindrical lenses, etc.),
6, PD placement
7, Adjustment of the subject's seating position (height, anterior-posterior distance)
8, Adjustment of the frontal adjustment knob, adjustment of the distance between the lens and the eye, and the lung head can be viewed at the window, and the vertical line is tangential to the apex of the cornea.
9, lung head horizontal, vertical, anterior-posterior, so that the vernier bubble is centered.
Four, Fog Vision
1, put in the computerized optometry or the results of the screening optometry
2, both eyes are in the open state at the same time
3, present the 0.2 visual field, adjust the spherical lenses until both eyes can just recognize the 0.2 visual field
4, both eyes simultaneously reduce the negative degree or increase the positive degree (0.25D a stop)
5, the visual field is blurred, let both eyes try to distinguish the visual field. In case of blurred vision, let both eyes try to distinguish the visual standard for 3-5 minutes until they can not see clearly
V. Preliminary test for axial position and degree of astigmatism
1, after foggy vision, close the left eye, open the right eye, and adjust the degree of the right eye's column lens to zero
2, show the visual standard of 0.5-0.6, and add the negative spherical lens to adjust the visual acuity to 0.5-0.6
3, show the optical standard of the astigmatism disk.
4, Let the examinee identify the direction of the clearest line
5, Calculate the axial direction of astigmatism (clearest line*30)
6, Add cylindrical lenses until the clarity of each line is basically the same
Sixth, Red-Green Balance Test
1, Add spherical lenses to the acuity of 0.8 or above
2, Show the red-green visual standard or add red-green background on the visual standard of 0.8. Red and green backgrounds
3, the examinee will compare the clarity of the red and green scopes, first green, then red and then green
4, adjust the spherical lenses so that the clarity of the red and green scopes is the same, or if it is not possible to be the same, make the green a little bit clearer
5, show the scopes of 1.0 and above, and make sure that the visual acuity is at the best state of corrected visual acuity
Seven, the cross-column lenses
1, the cross-column lenses will be used as the backdrop to the red and green scopes. After red-green equilibrium, align the axis of rotation of the cross-cylinder lens with the astigmatic axis position and present the foveal visual standard.
2, flip the cross-column mirror, flip speed moderate, no pause in the middle
3, according to the principle of chasing the red point to adjust the axis, each time to adjust the magnitude of the 10 back 5
4, until the cross-column mirror is as clear as the two sides of the astigmatism axis
5, to adjust the astigmatism, clockwise rotation of the cross-column mirror to make the P-points with the astigmatism axis alignment
6, according to the red and white balance, the cross-column mirror rotation axis and astigmatism axis alignment
7, after the red-green balance, the fovea is presented to the fovea. p>6, according to the red plus white minus, adjust the degree of the column mirror, until the two sides of the cross-column mirror is as clear as
7, every increase of -0.50 column mirror correspondingly reduce the spherical lens -0.25.
eight, the red-green balance
1, cross-column mirror, the second after the balance of the red-green
2, out of red and green visor, comparison of clarity of the red and green visor, adjusting the degree of the sphere mirror red and green. If the clarity of the red and green retinas is the same, or if the clarity is not the same, make the red a little clearer
The same method is used to check the left eye
Nine, binocular equilibrium
1, Polarization Separation Method, show the polarized three rows of retinas, the auxiliary lens is adjusted to the P position, and the upper and lower rows of the retinas have the same clarity.
2, prismatic separation method, presenting a single row of retinas, right eye 3ΔBD, left eye 3ΔBU
3, alternate masking of both eyes, presenting the optimal visual acuity retinas or the upper row of retinas, alternate masking of the left and right eyes for comparison of the clarity
If the left and right eyes are not the same, the clarity of the dominant eye should be the primary eye.
Ten, fog vision
1, add +0.75DS or +1.00DS fog vision in both eyes at the same time
2, eliminate fog vision, increase -0.25DS in both eyes at the same time to the best visual acuity, take the lowest negative sphere or the highest positive sphere
Eleven, try to wear the adjusting degree
1, look into the distance, clarity, comfort
2, read a book 5 minutes, whether there is discomfort
3, watching the computer, according to the customer's daily needs, observe a period of time.
Twelve, prescriptions and recommendations.