Nuclear hardness was classified using the Emery-Little lens opacities classification system.
sup] Second, the nucleus of complicated cataract after PKP is usually hard (the percentage of nuclear hardness ≥IV was 83% in our cases), and thus in these cases, more energy is required in phacoemulsification, which deteriorates the endothelial cells.
sup] Thus, in certain cases of complicated cataract after PKP such as cases in which nuclear hardness is ≤III, better postoperative visual acuity is demanded, and an advanced technology IOL is preferred, phacoemulsification should be suggested.
Nuclear hardness was evaluated using the Lens Opacities Classification System II.
Table 1 presents patient age, sex, nuclear hardness grades, and pre- and postoperative mean K values of 683 eyes in 4 groups based on corneal incision size during biaxial microincision phacoemulsification surgery.
Since 1998, Boeing has maintained the guidance systems in Heath, Ohio, ensuring spares are available for flight tests and nuclear hardness
The improved GDAS will be specifically designed for nuclear hardness
and survivability testing at Little Mountain Test Facility in Ogden, Utah, where Boeing tests radiation, shock and vibration, environmental and electromagnetic effects on weapon systems.