Direct Selective Laser Trabeculoplasty
(DSLT and SLT)

Glaucoma

Glaucoma a condition that results in optic nerve damage. The optic nerve relays information from the retina in the eye to the brain where information about vision is processed. Any damage to the optic nerve can result in irreversible loss of vision. In Glaucoma, optic nerve damage can occur as a result of high pressure and in some cases even with normal pressures – a condition known as Normal Tension Glaucoma (NTG). This is a Glaucoma condition that requires treatment and monitoring as it can change and worsen over time.

In the UK 2% of people aged over 40 have chronic open angle glaucoma. The incidence can rise to almost 10% in those over 75 years of age.

What is DSLT?

Direct Selective Laser Trabeculoplasty (DSLT) offers a novel and rapid way of treating glaucoma by lowering the elevated intraocular pressure (IOP). With the press of a button, a low energy light is delivered to the eye which stimulates intraocular flow fluid outflow thus lowering your IOP, which is the main risk factor of glaucoma.

Short laser pulses of low energy light are used to target cells rich in melanin in the drainage area of the eye. This induces a healing response that helps clear cells and reconstruct the drainage trabecular meshwork. This results in an improvement in fluid flowing out of the eye and in turn reduces eye pressure.

How DSLT works

Prior to the scheduled procedure, eye drops will be applied in order to lower the patients’ eye pressure. The patient is then assisted comfortably in front of the laser.

Seated in front of the laser the patient will be asked to focus on the red dot on the panel in front of them. The consultant will align the laser and commence treatment which only takes a few seconds. One eye is treated at a time. Rest assured that the laser will track any natural eye movement.

The DSLT procedure is non-contact other than a lid speculum to keep the eye open during the procedure.

Following therapy, the patient may experience some discomfort in the treated eye, which usually disappears in an hour. The patient may also experience blurred vision for a few hours. This will settle. In general, they can expect to return to their normal activities after the procedure. Their pressure will be checked an hour after their procedure and they will be given steroid eye drops to use over the next few days.

Does treatment last long term?

The DSLT treatment has been shown to be effective for many years. It can wear off after five years when it can be repeated again. It is therefore very important that you have your eye pressure checked on a regular basis. We advise this is performed 6 monthly along with a visual field and optic nerve analysis annually.

Is DSLT comfortable?

Yes, however there is a slight discomfort caused by ensuring the eyelid is open enough so that the procedure can be performed efficiently.

What to expect after the DSLT procedure?

Following DSLT therapy, you may experience some discomfort in the treated eye, which usually disappears in an hour.

You may also experience blurred vision for a few hours. This will settle. In general, you can expect to return to your normal activities after the procedure. Your pressure will be checked an hour after your procedure. You will be given steroid eye drops to use over the next few days.

FAQs

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