The diaphragm is the primary muscle used in respiration, which is the process of breathing. This dome-shaped muscle is located just below the lungs and heart. It contracts continually as you ...

The geographic center of the cornea is identified and marked. The donor cornea is then punched and the recipient cornea is trephined. Most pediatric grafts vary in size between 6 and 7.5 mm.

It has to be assumed, therefore, that the iris diaphragm is centred permanently and accurately to the optic axis of the substage condenser, ...

AACHEN, Germany — An artificial iris diaphragm may help salvage severely traumatized eyes despite the potential complications, a study here suggests. G. Keller and colleagues retrospectively ...

The iris sphincter will now hold the nucleus in place while the surgeon uses a phaco chop technique to emulsify and aspirate it (Figure 2). This technique brings the nucleus out of the capsular ...