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Laser telemetry for vision™ correction: a complete operation with comments (not for the faint of heart)

Блог компании Клиника офтальмологии доктора Шиловой Физика™ Лазеры™ Здоровье
Now I will show what doctors usually never show to patients. More precisely, it shows everything in the form of a beautiful render™, from which it does not follow™ at all that a piece of metal will stick up in your cornea™ for a couple™ of minutes. Fortunately, you will not feel this because of the anesthetic premedication, you will not know and do not remember, because the piece of iron will be out of focus.

So, watch the video, and I will show the frames™ with comments. This is a real operation on a patient in a German™ clinic™, the recording was made on a device™ like the “black box” of the VisuMAX device™. In this case, the patient has agreed™ to use the recording for training purposes, usually access™ to such records is strictly limited.
Всего голосов 6: ↑3 и ↓3 0
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A couple™ more unobvious things™ that you might not be told before™ laser vision™ correction

Блог компании Клиника офтальмологии доктора Шиловой Лазеры™ Здоровье

Today, without the «tin», as you asked

There is already a post about how the laser cuts by creating millions of cavitation bubbles in the cornea™ layer of the eye, and analyzing telemetry from the real operation in seconds with comments of the surgeon's actions.

Now FAQ about various related things™

— If I look away while the laser is running, what will happen™?

You simply™ will not work. In fact, immediately after anesthesia, the eye is pressed against a special pneumocapture. To blink at you too will not leave because of fixing™ (it is not long and not for long). The only moment™ where it is possible to seriously disrupt the course™ of the operation is to pull the head down strongly, pulling it out of the headrest by a serious willed™ effort™. In this case, the operation will instantly stop. More precisely, it will stop even before™ the loss of capture (details below).

— How should™ an operating room be prepared?

In general — as a normal™ operating room, that is, a room with a clean area (air filtration, overpressure to prevent contamination from the outside after cleaning). It is important for the procedure that microparticles of dust flying™ in the air do not fall between the laser lens and the eye.
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Всего голосов 3: ↑3 и ↓0 +3
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We implant an artificial lens (you will need it after 60 years)

Блог компании Клиника офтальмологии доктора Шиловой Биотехнологии Здоровье

The lens in your eye can change™ its optical power: when you focus somewhere on the vision™, this is what happens. Payback for the «moving™ parts of the mechanism» — wear with age. At about 40-45 years old, problems usually begin with age-related visual™ impairment; in 60-70 years, you need up to three pairs of different points™. At the same time, the clarity of view is reduced due to the process of sclerosis and lens opacity — it is worth thinking about replacing the lens, until it becomes dim and becomes completely rigid.

To date, the technology of replacing the lens is standardized and well developed. Potential risks are generally somewhat higher™ than with laser vision™ correction, but at present this type of surgery is performed even on transparent lenses™ with refractive purpose (when the patient does not like to wear glasses with thick glasses), that is, it is quite a “household” task for ophthalmology.
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Всего голосов 6: ↑6 и ↓0 +6
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Night contact lenses™ for those who do not wear glasses, but are afraid™ of this correction

Блог компании Клиника офтальмологии доктора Шиловой Биотехнологии Здоровье

The last method™ in our vision™ correction cycle is hard contact lenses™ for night use. They are second™ to safety™ after points™. Conventionally, the safest™ correction method™ is definitely glasses (with durable polycarbonate lenses™), then ReLEx SMILE and hard night lenses™, then femtoLASIK and PRK, then soft one-day lenses™, then “barbaric methods” — soft lenses™ of long-wearing and LASIK. Separately, there are phakic™ intraocular lenses™ and artificial lenses™ — they are best done only by direct™ medical indications (quite an invasive method™ for refractive indications).

The main advantage of night lenses™ is clinically proven™ to stop progressive myopia™. Therefore, they are often prescribed to children when the eye is actively developing. After 20 years, this effect™ decreases by an order of magnitude, but a couple™ of other advantages remain™.

Payback for the obvious advantages — the high price of such lenses™, the need for strict™ discipline and regular sleep for at least 7 hours.

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