Ophthalmic Microsurgery: Instrumentation, Microscopes, Technique

Head support for the patient during ophthalmic microsurgery.

The increasing use of the binocular operating microscope in ophthalmic surgery has highlighted both the desirability of some form of support for the operating surgeon's arms and the need for better fixation of the patient's head. Arm rests attached to the operating chair (Barraquer and Boberg-Ans, I959) or to the operating table (Pierse, I969) have been described. A more sophisticated mobile ar...

Glove Port Technique for Transanal Endoscopic Microsurgery

Introduction. Despite initial enthusiasm, the use of transanal endoscopic microsurgery (TEM) is still quite limited at present because of the expense of highly specialized equipment and the complexity of the learning curve. Furthermore, some authors report a relevant, although temporary, effect on anorectal function because of the considerable anal dilatation which can even produce a rupture of...

Photothermal Lens Technique - Theory and Instrumentation

Needle Segmentation in Volumetric Optical Coherence Tomography Images for Ophthalmic Microsurgery

Needle segmentation is a fundamental step for needle reconstruction and image-guided surgery. Although there has been success stories in needle segmentation for non-microsurgeries, the methods cannot be directly extended to ophthalmic surgery due to the challenges bounded to required spatial resolution. As the ophthalmic surgery is performed by finer and smaller surgical instruments in micro-st...

Technique for cellular microsurgery using the 193-nm excimer laser.

A new cell surgery technique has been developed to produce well-defined alterations in cells and tissue without detectable heating and/or other structural damage in the surroundings. The technique involves the use of an argon fluoride excimer laser, in the deep ultraviolet (UV) region of the spectrum at 193 nm, which is guided through a glass pipette filled with a positive air pressure. To demo...