A Case and Review of Ophthalmomyiasis Caused by Oestrus ovis in the Central Valley of California, United States.

Ophthalmomyiasis externa is the infestation of external ocular structures most commonly by Oestrus ovis, sheep nasal bot fly, which have a pupal stage in soil. Farmers and shepherds are commonly affected but rarely in urban areas. This is the first case of Oestrus ovis ophthalmomyiasis externa in California since Catalina Island 1986.

Retrospective analysis of actual LASIK flap diameter compared with microkeratome ring size performed by different surgeons.

Purpose: To evaluate the difference in the diameter between microkeratome ring and actual laser in situ keratomileusis (LASIK) flap size by 4 different surgeons using 3 different microkeratomes in comparison to preoperative keratometry.

Setting: Gimbel Eye Centre, Calgary, Alberta, Canada.

Methods: A retrospective analysis of 6667 consecutive LASIK surgeries performed at the Gimbel Eye Centre between 1998 and 2002 was conducted.

Wavefront-guided multipoint (segmental) custom ablation enhancement using the Nidek NAVEX platform.

Purpose: To present our clinical experience regarding enhancement (retreatment) of previously performed non-wavefront-guided refractive surgery by wavefront-guided multipoint (segmental) custom ablation utilizing the Nidek NAVEX platform.

Methods: Retrospective clinical analysis was conducted of 20 eyes (19 patients) with mixed myopic or hyperopic astigmatism who had undergone primary laser in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK) and reported postoperative reductions in quality of vision. These vision disturbances correlated with clinically significant elevations in the root mean square of higher order aberrations (RMS of HOA) values.

Primary multipoint (segmental) custom ablation.

Purpose: We present our experience in resolving visual symptoms in refractive patients undergoing primary multipoint (segmental) custom ablation.

Methods: Twelve eyes with mixed myopic astigmatism underwent evaluation and primary treatment by multipoint (segmental) custom ablation for the correction of refractive errors and visual symptoms using the Nidek NAVEX platform.

Results: Twelve eyes showed resolution of visual symptoms following diagnosis and treatment with MCA using the NAVEX platform.

AdvanTec Legacy System and the NeoSoniX handpiece.

AdvanTec Legacy System and the NeoSoniX handpiece (Alcon Surgical, Fort Worth, Texas) are improvements to the Legacy System that allow power modulation and customization of surgical technique in phacoemulsification surgery. AdvanTec technology allows power modulation in terms of occlusion power management, global linear flow, mode sequencing, and visco mode. The NeoSoniX handpiece combines sonic oscillations with linear ultrasound to reduce thermal energy during nucleus removal.