Principles and Practice of Lacrimal Surgery by Mohammad Javed Ali

Author:Mohammad Javed Ali
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

Less collateral damage

Nd:YAG

1064

3–10

600

Good cutting ability

More collateral damage

KTP

532

10

300

Good cutting effect

Good coagulation

Need protective wear

Er:YAG

2940

0.1–0.4

350–425

Good bone ablation

Poor coagulation

OK for canaliculoplasty

Ho:YAG

2140

2.5–20

300–1000

Adequate coagulation

Soft tissue ablation

Easily penetrates the bone

Fig. 24.2Diode laser (Diomed, Cambridge, United Kingdom)

Diode lasers are designed for multispecialty application in minimally invasive surgery (ophthalmology, otorhinolaryngology, and urology), open surgery (obstetrics and gynecology), interstitial laser therapy, and vascular applications (dermatology and vascular surgery) [5]. Therefore, from a financial perspective, a single diode laser in a hospital setting can be shared by multiple surgical specialties. Operating at a wavelength of 810–980 nm in the near-infrared portion of the spectrum, this laser induces excellent hemostasis due to its high absorption in melanin and hemoglobin. It is compact, is portable, and can fit neatly into any doctor’s clinic or operating suite. Due to its portability, it can be easily transported from one clinic to another or between hospitals. Setting up this laser is also simple and easy. All diode lasers run from a standard electrical wall socket and are ready for use within seconds. The menu-driven user interface is simple, and it gives immediate access to treatment options with continuous, pulsed, or repeat pulse mode. There is also minimal maintenance and service requirements needed because this surgical laser has a solid-state system and has no moving parts. The laser energy delivery system uses a flexible fiber whose diameters range from 400 to 1000 μm [20, 33] and gives easy access to confined areas and is also compatible with endoscopic instrumentation for surgical applications (Fig. 24.3).

Fig. 24.3Laser fiber optic (600 μm)

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