Diode laser eye surgery for glaucoma most often means transscleral cyclophotocoagulation, a procedure that lowers intraocular pressure by reducing aqueous humour production in the ciliary body. It is usually considered for refractory or advanced disease. This article explains the principle, the difference between continuous-wave and micropulse treatment, and what a glaucoma service needs to equip a diode laser room.
How transscleral cyclophotocoagulation works
An 810 nm diode laser emits energy through a probe placed on the sclera over the ciliary body. The energy is absorbed by pigmented tissue, which reduces the production of aqueous humour and therefore the eye pressure. Because the beam passes through the sclera, the procedure is non-incisional and can be performed under local or regional anaesthesia.
Historically it was used mainly after other options had failed, but micropulse delivery has led many glaucoma specialists to consider it earlier in selected eyes. Indications, patient selection and settings are clinical decisions that follow the surgeon's training and published protocols.
Continuous-wave CPC versus micropulse µCPC
In continuous-wave treatment the probe is applied for a set time and power, delivering a sustained thermal dose. Micropulse treatment breaks the emission into short on and off cycles, so the tissue can cool between pulses and collateral heating is reduced. Duty cycle, power and sweep duration differ between protocols, so confirm what your lead surgeon will use.
The FOX IV 810 is an 8 W, 810 nm diode laser with pulse lengths from 100 µs to 60 s and continuous-wave operation. For µCPC it offers energy and time counters, voice output every 10 s or 10 J, a metronome every 1 s or 1 J and a 3 W output limit for glaucoma and retinal treatments, which supports consistent sweep technique.
What equipment a diode laser glaucoma service needs
Beyond the laser console, you need a dedicated cyclo-probe, eye protection for staff at 810 nm, a stable surface and the usual local anaesthesia set-up. A direction-independent probe tip simplifies handling, since the probe does not have to be oriented in a specific way; the FOX IV 810 probe geometry is patent-protected in Germany, Europe and the USA.
Portability is an advantage. The FOX IV 810 weighs 1.53 kg, measures 17.4 × 14.2 × 16.3 cm and runs from battery or mains, so one unit can serve the OR, a procedure room and the clinic. It also supports transcanalicular dacryocystorhinostomy, which may justify the purchase for ophthalmology departments with oculoplastic work.
Diode laser eye surgery for glaucoma and other options
Diode CPC sits alongside drops, selective laser trabeculoplasty, drainage devices and filtering surgery. For earlier disease with an accessible angle, clinics often start with SLT laser settings and compare approaches in SLT versus YAG lasers. CPC is generally reserved for eyes where pressure control by those means is insufficient or surgery is risky.
Retinal indications also use 810 nm diode lasers; see micropulse laser in ophthalmology for related technology.
Selection checklist and next step
Compare output power and its limits, micropulse options and duty cycle, probe design and sterilisation or single-use policy, counters and feedback aids, battery life, weight, safety filters and training. Confirm registration with the relevant UAE authority and the local service route.
Beckfinity can supply the FOX IV 810 with training and service. To discuss your glaucoma service, request a consultation.
Frequently asked questions
What is cyclophotocoagulation?
It is a laser procedure that applies energy over the ciliary body to reduce aqueous humour production and lower eye pressure.
What is the difference between CPC and micropulse CPC?
Continuous-wave CPC delivers sustained energy, while micropulse CPC divides it into short pulses with rest periods so tissue can cool, reducing collateral heating.
Which wavelength is used?
Diode lasers at 810 nm are the usual choice for transscleral cyclophotocoagulation, as on the FOX IV 810.
Can the same diode laser be used elsewhere?
Yes. The FOX IV 810 also supports retinal treatments and transcanalicular DCR, subject to the accessories and training involved.
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