While there were some studies in the 1970s and 1980s that found marijuana could lower intraocular pressure, the real association between the drug and glaucoma treatment occurred due to a landmark medical marijuana court case in 1974.
Short-term effects of marijuana include:
Today, there are new methods of ingesting medical cannabis that could be less addictive. For example, lozenges, topical oils, and creams have all been developed to reduce the risk of getting high while benefitting from potential medical effects.
Glaucoma involves high intraocular pressure and damage to the optic nerve. The most common type of glaucoma, open-angle, is a chronic and progressive disease that can be tough to manage. As medical marijuana becomes more popular, more people are interested in the suggestion that marijuana or CBD oil can help this eye condition. (Learn More)
What Is Marijuana? (September 2019). National Institute on Drug Abuse (NIDA).
THC’s peak effects in the body last for three to four hours. For any medical marijuana treatment to be effective for glaucoma, you would need to take a dose several times a day. Not only is this disruptive to work, school, or a regular daily routine, it also means you will be consistently intoxicated, which can be very dangerous. Marijuana, especially types high in THC, is addictive.
- Altered senses, like seeing brighter colors.
- Altered sense of time.
- Changes in mood.
- Impaired body movement.
- Difficulty thinking clearly.
- Problems with memory.
- Trouble solving problems.
- Hallucinations, delusions, and even psychosis, when used at very high doses.
- Paranoia or anxiety.
Because the effects on IOP last only a few hours, medical marijuana does not help to maintain stable low eye pressure, which is necessary to reduce damage to the optic nerve.
Further medical studies have shown that CBD in medical marijuana can slightly raise intraocular pressure, and marijuana decreases blood flow. Both of these things can further damage the optic nerve. (Learn More)
People who have glaucoma often wonder if there are better forms of treatment than eye drops or surgery. This led to an interest in marijuana, including the use of CBD. Learn what studies say about the effect of marijuana use on glaucoma.
The longevity of your laser eye surgery result will depend on your age and type of treatment. Laser eye surgery doesn’t stop you and your eyes aging. As you age changes like presbyopia (needing reading glasses) in your 40s and cataract (60s and onwards) are inevitable. There are sight correction options for all of these issues.
Modern lasers use sophisticated eye trackers that follow even the slightest eye movement and immediately adjust the laser pulse position. If you make a sudden big movement the laser will automatically cut out and stop firing. The response time is 1 millisecond (1/1000 of a second)
You should wear the sleeping goggles that you will be given to prevent you rubbing your eyes whilst you are asleep for the first week after your laser vision correction. Always wash your hands before touching your eyes
Lasik eye surgery has been performed since 1991 and is a popular type of laser eye surgery because of rapid healing, minimal discomfort and fast visual recovery. During LASIK a very thin protective flap is first created with a femtosecond laser (Intralase) under which the cornea is reshaped to correct vision.
Laser eye surgery is very safe when performed on people who should have this type of treatment. The main aim of your first consultation is to exclude people who shouldn’t have laser eye surgery at all. There may be alternative types of vision correction techniques such as the Visian ICL implant where laser surgery is deemed unsuitable. Major advances in laser surgery over the last 2 decades have been in screening technologies to exclude patients from having laser surgery. This means that the techniques are safer than ever.
Don’t wear any eye make up for at least 3 days after LASIK surgery as small particles of mascara and foundation can get into the tear film and under the flap after LASIK and also can cause infections after surgery. No make up for 1 week after LASEK or transPRK, until the doctor has seen you.
Exercise 2 days after LASIK is fine. For LASEK and transPRK take a week off after the procedure. Bikram or hot yoga should be avoided for 2-3 weeks after surgery. You can return to swimming 3-4 weeks after surgery.
Surgery is performed after local anaesthetic drops are placed on the eye. You will not feel any pain once the anaesthetic starts to work. If you are having LASIK performed you will feel some pressure on the eye during flap creation.
A small degree of your previous prescription can sometimes return after laser eye surgery. This tends to happen in patients who have a high prescription to start with and is called regression. Studies have demonstrated a change of 1 diopter over a 20 year period in myopic patients. This may actually be beneficial as you age and develop presbyopia.
Everything you need to know about laser eye surgery before you take the plunge