Krypton (from Ancient Greek: κρυπτός, romanized: kryptos "the hidden one") is a chemical element with the symbol Kr and atomic number 36. It is a colorless, odorless, tasteless noble gas that occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps.
Krypton is considered to be non-toxic. Characteristics: Krypton is a colorless, odorless, inert gas. Although it is extremely unreactive krypton can react with the very reactive gas fluorine.
1898. Discovered by. Sir William Ramsay and Morris Travers. Origin of the name. The name is derived from the Greek 'xenos' meaning stranger.
Krypton is used commercially as a filling gas for energy-saving fluorescent lights. It is also used in some flash lamps used for high-speed photography. Unlike the lighter gases in its group, it is reactive enough to form some chemical compounds.
Excimer laser. An excimer laser, sometimes more correctly called an exciplex laser, is a form of ultraviolet laser which is commonly used in the production of microelectronic devices, semiconductor based integrated circuits or "chips", eye surgery, and micromachining.
Krypton is also used in lasers as a control for a desired wavelength, especially in red lasers because Krypton has a much higher light density in the red spectral region than other gases such as Neon, which is why krypton-based lasers are used to produce red light in laser-light shows.
Krypton is used commercially as a filling gas for energy-saving fluorescent lights. It is also used in some flash lamps used for high-speed photography. Unlike the lighter gases in its group, it is reactive enough to form some chemical compounds.
Pain: Most patients have little if any pain following retinal laser surgery. Patients who require more extensive laser may have an ache inside the eye or around the eye. Blurred vision: It is common to have blurry vision for the first few hours after laser surgery.
But certain side effects of
LASIK eye surgery, particularly dry
eyes and temporary visual problems such as glare, are fairly common.
Risks of LASIK surgery include:
- Dry eyes.
- Glare, halos and double vision.
- Undercorrections.
- Overcorrections.
- Astigmatism.
- Flap problems.
- Regression.
- Vision loss or changes.
Here, we have listed some of the essential tips to take care of your retina:
- Healthy and balanced diet.
- Avoiding unhealthy foods and drinks.
- Drinking plenty of water.
- Regular exercise.
- Wearing sunglass when out in the sun.
- Quitting smoking.
- Wearing eye protection.
- Regular eye check-up.
A gas or air bubble at sea level will expand by 1.25 times at 5,000 feet, 1.5 times at 10,000 feet, and 2 times at 18,000 feet.
The vision through a gas bubble is very poor. A gas-filled eye can often only see movement. As you would expect, a gas bubble dissolves from bottom to top.
If you had laser surgery or cryopexy, you should be able to resume normal activities within days, but you should take care not to do anything too strenuous until your eye has healed. If you had retinal reattachment surgery, you can expect to return to work and many other normal activities within two weeks.
Although retinal tears may also occur as a result of eye trauma, most retinal tears occur spontaneously due to a PVD. retina. At birth, this gel is attached to the retina, but as we age, the gel separates from the retina creating a posterior vitreous detachment or PVD. In most cases, this happens without any issue.
If you had laser surgery or cryopexy, you should be able to resume normal activities within days, but you should take care not to do anything too strenuous until your eye has healed. If you had retinal reattachment surgery, you can expect to return to work and many other normal activities within two weeks.
Laser photocoagulation is usually not painful. The injection of anesthetic may be uncomfortable. And then you may feel a slight stinging sensation or see brief flashes of light when the laser is applied to your eye.
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation".
Laser surgery uses laser light to remove diseased tissues or treat bleeding blood vessels. Laser surgery may also be used to restore the skin and reduce wrinkles, sunspots, tattoos, or birthmarks.
During the LASIK procedure, a specially trained eye surgeon first creates a precise, thin hinged corneal flap using a microkeratome. The surgeon then pulls back the flap to expose the underlying corneal tissue, and then the excimer laser ablates (reshapes) the cornea in a unique pre-specified pattern for each patient.
LASIK surgery costs, on average, between $1,000 and $3,000 per eye. Some types of surgery are more sophisticated and come with higher costs. LASIK costs can also vary from location to location. Insurance plans typically won't cover the cost of surgery, as this is considered an elective procedure.
What types of surgeries use lasers?
- To shrink or destroy tumors.
- To help prevent blood loss by sealing small blood vessels.
- Refractive eye surgery.
- Dental procedures.
- To treat some skin conditions, including to remove warts, moles, tattoos, birthmarks, acne, scars, wrinkles, and unwanted hair.
When we ask, who invented laser eye surgery, like most of the modern day medical techniques, there is no one name to name. Dr. Fyodorov, a Russian doctor, first applied the concepts of “Refractive Surgery”, in a well researched manner, way back in 1970.
Laser surgery is a type of surgery that uses special light beams instead of instruments, such as scapels, to perform surgical procedures. There are several different types of lasers, each with characteristics that perform specific functions during surgery.
LASIK stands for Laser-Assisted In Situ Keratomileusis and is a procedure that permanently changes the shape of the cornea, the clear covering of the front of the eye, using an excimer laser. A mechanical microkeratome (a blade device) or a laser keratome (a laser device) is used to cut a flap in the cornea.
A 2016 study in the Journal of Cataract & Refractive Surgery found that LASIK has a 96% patient satisfaction rate. The latest research indicates that LASIK has a 99% success rate in achieving 20/40 vision or better, and a 90% success rate in achieving 20/20 vision or better.
Focal Laser treatments are performed in our office under dim lighting, with your body facing the machine, sitting up at the slit lamp (typically for retinal edema but also for tears). Depending on your procedure, you may be asked to lie down (typically for retinal tears).
Femtosecond Laser Principles
The femtosecond laser is an infrared laser (wavelength: 1,053 nm) with ultra-short pulse duration (10–15 s). Given its short pulse duration, the femtosecond laser has the ability to deliver laser energy with minimal collateral damage to the adjacent tissue.Macular grid laser photocoagulation for branch retinal vein occlusion. Macular grid laser photocoagulation is used for chronic non-ischaemic macular oedema following BRVO and has been the mainstay of treatment for over 20 years.
The PASCAL (PAtterned SCAnning Laser) Photocoagulator is an integrated semi-automatic pattern scan laser photocoagulation system designed to treat ocular diseases using a single shot or predetermined pattern array.
Argon laser treatment can be used to treat a number of eye conditions including glaucoma, diabetic eye disease and some retinal holes and tears. This is an outpatient treatment carried out by an ophthalmologist, a specialist eye doctor. You are likely to be in clinic for up to 2 hours.
Retinal laser therapy, also known as focal laser photocoagulation, is an outpatient procedure that treats macular edema and small breaks in the retina. The macula is the center of the retina. Macular edema—or swelling—results from bleeding of diseased blood vessels that supply the retina with blood.
Circumferential argon laser photocoagulation was administered as preventive treatment for retinal detachment in 53 eyes with extensive areas of lattice degeneration and/or retinal breaks and at least one additional high-risk factor for retinal detachment. The treatment did not affect visual acuity.
Panretinal Photocoagulation (PRP) is a type of laser treatment for the eye. It is used in people who have developed new abnormal blood vessels at the back of the eye in the retina or in the drainage system within the eyeball.
