By Roger Steinert
Authored via a huge spectrum of hugely revered participants, this useful and easy-to-use reference contains sections on preoperative issues, advances within the options and symptoms for ECCE and phacoemulsification, destiny developments for cataract extraction and administration of pediatric cataracts, intraocular lenses, operative issues and the administration of postoperative problems, and masses extra. This moment version builds upon the cast origin of the 1st and brings in your fingertips the main smooth, modern developments within the field.
- Features a logical association that progresses from preoperative evaluation...through surgical administration and techniques...to postoperative issues.
- Offers functional technical recommendation complemented by way of step by step directions and over 650 illustrations.
- Reflects advances in phacoemulsification tools and strategies.
- Covers a wealth of scorching issues together with anesthesia, administration of pediatric cataracts, intraocular lenses, and lasers.
- Updates the newest understandings in pathogenesis and biochemistry.
- Discusses using sutures and suture fabrics in complicated secondary interventions.
With over forty five contributing specialists.
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Extra resources for Cataract Surgery: Technique, Complications, and Management, 2e
4-cm mark (arrow), indicating that the eyelid has moved 16 mm (normal). Note that the examiner’s thumb is used to immobilize the brow in upgaze. This is done to isolate the movement of the levator muscle because patients with ptosis often recruit the brow to help elevate the eyelid, which can make the levator muscle function appear to be greater than it actually is. ■ ■ Children with ptosis that occludes the eye usually adopt a chin-up head posture to view beneath the obstructing eyelid. The child’s head should be held straight when making the measurement.
The examiner must monitor the patient’s ﬁxation to be sure he is staring straight ahead, because the natural inclination for most people taking the test is to move the eyes toward the light targets. The computer randomly checks for false-negative and false-positive responses. False negatives are recorded when the patient fails to respond to bright light in the center of ﬁxation. False positives occur when the patient indicates that he sees a dim light that is intentionally placed in the blind spot.
For younger patients, visual ﬁelds may be measured manually using a Goldmann perimeter. The patient is seated in front of a white bowl, similar to that used for automated perimetry. The examiner monitors the patient’s ﬁxation and projects light of various intensities and sizes in the peripheral visual ﬁeld. The lights is slowly moved centrally until the patient indicates that they see it. Manual perimetry is less precise than automated perimetry, but it is easier for many younger patients to perform (Figure 2–6).