Optomechanical response of human and monkey lenses in a lens stretcher.

Purpose: To quantify the forces necessary to change the shape and optical power of human and monkey lenses.

Methods: Cynomolgus monkey (n = 48; age: 3.8-11 years), rhesus monkey (n = 35; age: 0.

Ocular decompression devices: liquid mercury balloon vs the tungsten powder balloon.

Purpose: To determine if an intraocular pressure (IOP)-reducing device containing tungsten powder decreases pressure comparably to the traditional mercury-containing apparatus.

Design: Prospective randomized, single-blind, controlled, phase I equivalence study.

Method: At a tertiary care center, both eyes of 24 volunteers with normal IOP were treated with an ocular compression device containing either liquid mercury or tungsten powder.

Assessment of the strength of minicapsulorhexes.

Purpose: To evaluate the effect of age, size, position, and species on the strength of minicapsulorhexes.

Setting: Surgical Suite and Laser Laboratory, Ophthalmic Biophysics Center, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA.

Methods: Capsulorhexes 0.

In vitro dimensions and curvatures of human lenses.

The purpose of this study was to determine dimensions and curvatures of excised human lenses using the technique of shadowphotogrammetry. A modified optical comparator and digital camera were used to photograph magnified sagittal and coronal lens profiles. Equatorial diameter, anterior and posterior sagittal thickness, anterior and posterior curvatures, and shape factors were obtained from these images.

Thermal analysis of laser interstitial thermotherapy in ex vivo fibro-fatty tissue using exponential functions.

A therapeutic procedure to treat small, surface breast tumours up to 10 mm in radius plus a 5 mm margin of healthy, surrounding tissue using laser interstitial thermotherapy (LITT) is currently being investigated. The purpose of this study is to analyse and model the thermal and coagulative response of ex vivo fibro-fatty tissue, a model for breast tissue, during experimental laser interstitial thermotherapy at 980 nm. Laser radiation at 980 nm was delivered interstitially through a diffusing tip optical fibre inserted into a fibro-fatty tissue model to produce controlled heating at powers ranging from 3.

Laser interstitial thermotherapy (LITT) monitoring using high-resolution digital mammography: theory and experimental studies.

Laser interstitial thermotherapy (LITT) is a minimally-invasive laser hyperthermia procedure for the treatment of localized tumours. Real-time monitoring of LITT is essential to control the extent of tumour destruction and ensure safe and effective treatments. The feasibility of using high-resolution digital x-ray mammography to monitor LITT of breast cancer was evaluated.