Endoscopic and transscleral cyclophotocoagulation

Diode laser endoscopic cyclophotocoagulation in the normal equine eye

“…The remaining quadrant in each globe served as an untreated control. These energy levels were selected based on previous studies 10,11,25–30,34–42 …”

“…Destruction of this tissue along with damage to the ciliary vasculature, postoperative uveitis with prostaglandin release, and architectural change leading to increased uveoscleral outflow are possible mechanisms responsible for IOP reduction. It is likely that a combination of these factors is responsible for IOP reduction 9–11 …”

“…Trans‐scleral cyclophotocoagulation (TSCP) has been routinely used in veterinary medicine, including the treatment of equine glaucoma, with variable results 12–24 . The main disadvantage of TSCP is the lack of direct visualization of the CB during the procedure that may lead to an increased risk of collateral damage to nontarget tissues 10,11 . Endoscopic cyclophotocoagulation (ECP) involves the application of laser energy to the CB under direct endoscopic visualization.…”

“…Real‐time visualization of the ECP probe and acute tissue effects may allow a precise application of the laser energy, thus decreasing the risk of overtreatment or collateral tissue damage. However, this procedure requires surgical entry into the eye, which may be associated with other complications 10,11,25 …”

Endoscopic vitrectomy

“…At the internal lip of a sclerotomy, vitreous incarceration can be uniquely visualized as vitreous folds (Fig. It is typically done from the anterior segment, with or without cataract surgery [35][36][37]. Endoscope-directed complete vitreous release with a vitrector can be performed.…”