Recommended Standard Treatment Procedures
000000-1254-918 RSTP – LASIK for MEL 80 30.08.2004
1
RSTP for LASIK
The RSTP for LASIK is an excerpt from the user’s manual of the MEL 80 Excimer Laser.
The supply of this excerpt does not relieve you to read the entire user’s manual as well as take part
in an equipment briefing before start-up of the MEL 80.
Preparing device and patient for treatment
1.
Fully examine the patient's eye(s) including the retina (inquire also about the patient's working
conditions, e.g. night driving).
2.
Three weeks before surgery the patient should stop wearing hard contact lenses. Soft lenses
should be removed one week before surgery.
3.
Check refraction by yourself or have it done by an appropriately qualified person. Use subjective
refraction.
4.
Check pupil size in the dark (e.g. with a Colvard pupillometer or WASCA Analyzer).
5.
Determine corneal thickness at the thinnest point.
6.
Calculate the ablation depth with the adequate treatment diameter (0.5 mm > mesopic pupil size)
and check for a sufficient residual stroma (250 µm).
7.
Never perform LASIK in a patient supposed to have a residual stroma thickness of less than
250 µm. Always consider the inaccuracy of the microkeratome.
8.
Check the national legislation and all contraindications specified in relevant literature (e.g.
keratoconus, irregular topography, etc.), before you decide on the surgery.
9.
Recheck refraction and topography (3 pictures minimum) immediately before surgery (possibly the
topography has changed by contact lens effects since the first measurement).
10.
Check room conditions (see Technical data, ambient conditions for intended use in the user’s
manual of the MEL 80 Excimer Laser).
11.
Starting 30 minutes before surgery, it is advisable to put a drop of a non-toxic antibiotic in the eye
every 10 minutes.
12.
Prepare the microkeratome.
13.
Enter and verify patient data.
14.
Microscope setting: Magnification 1.0x.
15.
Run the fluence test and confirm it with <
OK
>.
16.
Switch off the aiming beam to avoid coverage of the fixation light. Move joystick aside, if
necessary.
17.
Bring patient in.
Warning
