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MedTech Outlook | Tuesday, August 16, 2022
Diabetic retinopathy usually requires specific treatment when it ranges from an advanced stage and there's a risk to your vision.
FREMONT, CA: Diabetic retinopathy is an eye status that can cause vision loss and blindness in people with diabetes. It influences blood vessels in the retina (the light-sensitive layer of tissue in the back of your eye).
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If you have diabetes, you must get a comprehensive dilated eye exam at least yearly. Diabetic retinopathy may not possess any symptoms at first — but finding it early can aid you in taking steps to protect your vision.
Treatment-Diabetic retinopathy
Diabetic retinopathy usually requires specific treatment when it ranges from an advanced stage, and there's a risk to your vision.
It's generally offered if diabetic eye screening detects stage 3 (proliferative) retinopathy or if you have symptoms due to diabetic maculopathy.
At every stage, managing your diabetes is crucial.
Treatments for advanced diabetic retinopathy
For diabetic retinopathy that is lowering or affecting your sight, the primary treatments are:
• laser treatment – to heal the growth of new blood vessels at the retina in cases of proliferative diabetic retinopathy and to stabilize a few cases of maculopathy
• Eye injections – to cure severe maculopathy that's menacing your sight
• Eye surgery – to eliminate blood or scar tissue from the eye if laser treatment is not possible since retinopathy is too advanced
Laser treatment
Laser treatment is employed to treat new blood vessels at the retina in the advanced stages of diabetic retinopathy.
This is done since the new blood vessels tend to be very weak and often cause bleeding in the eye.
Treatment can support stabilizing the changes in your eyes caused by your diabetes and stop your vision from getting any worse, although it will not usually improve your sight.
Laser treatment:
• It involves shining a laser into your eyes – you'll be given local anesthetic drops to numb your eyes; eye drops widen your pupils, and special contact lenses hold your eyelids open and focus the laser onto your retina.
• usually takes around 20 to 40 minutes
• It is usually performed on outpatient grounds, so you will not need to stay in the hospital overnight.
• may demand more than one visit to a laser treatment clinic
• It is not usually painful, although you may feel a sharp pricking sensation when treating certain eye areas.
Side effects
After treatment, you may have some secondary effects for a few hours.
These can include:
• Blurred vision – you will be unable to drive until this passes. Hence you'll be required to arrange for a friend or relative to go home or take public transport.
• Increased light sensitivity might help to wear sunglasses until your eyes have adjusted.
• Aching or discomfort – over-the-counter painkillers, like paracetamol, should help.
Likely complications
Potential complications include:
• lowered night or peripheral (side) vision – some people may have to stop driving because of this
• bleeding into the eye or entities floating in your vision (floaters)
• being able to "see" the pattern given by the laser on the back of your eye for some months
• a small but permanent blind spot close to the center of your vision
Get medical advice if you observe that your sight gets worse after treatment.
Eye injections
In certain cases of diabetic maculopathy, injections of medicine named anti-VEGF may be given straight into your eyes to avoid new blood vessels from forming at the back of the eyes.
The primary medicines used are ranibizumab (Lucentis) and aflibercept (Eylea).
These can support stopping the problems in your eyes from worsening and may also improve your vision.
During treatment:
• Your area around the eyes will be cleaned and protected with a sheet
• small clips will be employed to keep your eyes open
• you'll be given local anesthetic drops to numb your eyes
• a very fine needle is cautiously guided into your eyeball, and the injection is given
The injections are normally given once a month to start with. Once your vision stabilizes, it'll be stopped or given less frequently.
Injections of steroid medication may be given instead of anti-VEGF injections, or if the anti-VEGF injections do not help.
Risks and side effects
Possible risks and secondary effects of anti-VEGF injections include:
• eye irritation or distress
• bleeding interior of the eye
• floaters or a feeling of possessing something in your eye
• itchy eyes
Also, a risk that the injections could reason blood clots to form, leading to a heart attack or stroke.
This risk is tiny, but it should be discussed before you consent to treatment.
The main risk with steroid injections is enhanced pressure inside the eye.
Eye surgery
Surgery may be conducted to remove some of the vitreous humor from the eye. This transparent, jelly-like substance fills the space behind the eye's lens.
The operation called vitreoretinal surgery may be necessary if:
• a huge amount of blood has collected in your eye
• there's extensive scar tissue that's possible to cause, or has already caused, retinal detachment
During the procedure, the surgeon will induce a small incision in your eye before removing some of the vitreous humor, removing any scar tissue, and using a laser to prevent further deterioration in your vision.
Vitreoretinal surgery is typically carried out under local anesthetic and sedation. This means you will not experience pain or be aware of the surgery.
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