Purpose: To determine the outcome of immediate suture adjustment in adjustable suture strabismus ... more Purpose: To determine the outcome of immediate suture adjustment in adjustable suture strabismus surgery using a general anaesthetic technique. Methods: Adjustable suture strabismus surgery was performed in 69 patients using a target-controlled infusion of propofol-remifentanil. Sutures were adjusted immediately following surgery and patient satisfaction and ocular alignment were assessed at 3 months postoperatively. Results: Preoperatively, 71% (49/69) of patients were divergent (group 1) and 29% (20/69) were convergent (group 2). Following surgery, the mean deviation in group 1 was 3.5 8 13.08 ⌬ exodeviation for near and 0.8 8 10.66 ⌬ exodeviation for distance. The mean postoperative deviation in group 2 was 2.6 8 9.1 ⌬ esodeviation for near and 2 8 9.0 ⌬ esodeviation for distance. Overall, 80% (45/69) were within 10 ⌬ of orthotropia. Conclusions: Single-stage adjustable suture strabismus surgery produces good results and is well suited to day case surgery.
The morphology of congenital cataract reflects a combination of the timing and nature of the caus... more The morphology of congenital cataract reflects a combination of the timing and nature of the cause, the anatomy of the lens including its capsule, its development, and changes that take place with time. Morphology may variably affect prognosis, give a clue to the etiology and the age of onset and, in an isolated case, sometimes suggest heritability. The spectrum of morphological variations is enormous and can be complex. A comprehensive approach is to classify the variations according to the area of the lens involved, and sub-dividing them by a detailed description of the shape and appearance. Each specific morphological type is then analyzed determining the etiology, visual prognosis, and management. The use of gene markers has allowed many of these variations to be identified and categorized. Cataracts in childhood can involve the whole lens, in which case they are called total, Morgagnian, or disk-like. They can affect only the center of the lens: lamellar, nuclear, oil droplet, cortical, or coronary. They can be anterior: anterior polar, anterior subcapsular, or anterior lenticonus. The posterior aspect of the lens can also be affected in different fashions: Mittendorf's dot, posterior lenticonus, posterior cortical cataracts, or posterior subcapsular. There are five more forms that must be described separately: punctuate lens opacities, sutural cataracts, coralliform or crystalline, wedge-shaped, and persistent hyperplastic primary vitreous. ( Surv Ophthalmol 48: 2003)
Page 1. DETECTION AND TREATMENT OF INFANTILE CATARACTS Scott R. Lambert, MD Luis Amaya, MD David ... more Page 1. DETECTION AND TREATMENT OF INFANTILE CATARACTS Scott R. Lambert, MD Luis Amaya, MD David Taylor, FRCS Infantile cataracts are one of thé few treatable causes of childhood blindness. Many advances ...
Purpose: To determine the outcome of immediate suture adjustment in adjustable suture strabismus ... more Purpose: To determine the outcome of immediate suture adjustment in adjustable suture strabismus surgery using a general anaesthetic technique. Methods: Adjustable suture strabismus surgery was performed in 69 patients using a target-controlled infusion of propofol-remifentanil. Sutures were adjusted immediately following surgery and patient satisfaction and ocular alignment were assessed at 3 months postoperatively. Results: Preoperatively, 71% (49/69) of patients were divergent (group 1) and 29% (20/69) were convergent (group 2). Following surgery, the mean deviation in group 1 was 3.5 8 13.08 ⌬ exodeviation for near and 0.8 8 10.66 ⌬ exodeviation for distance. The mean postoperative deviation in group 2 was 2.6 8 9.1 ⌬ esodeviation for near and 2 8 9.0 ⌬ esodeviation for distance. Overall, 80% (45/69) were within 10 ⌬ of orthotropia. Conclusions: Single-stage adjustable suture strabismus surgery produces good results and is well suited to day case surgery.
The morphology of congenital cataract reflects a combination of the timing and nature of the caus... more The morphology of congenital cataract reflects a combination of the timing and nature of the cause, the anatomy of the lens including its capsule, its development, and changes that take place with time. Morphology may variably affect prognosis, give a clue to the etiology and the age of onset and, in an isolated case, sometimes suggest heritability. The spectrum of morphological variations is enormous and can be complex. A comprehensive approach is to classify the variations according to the area of the lens involved, and sub-dividing them by a detailed description of the shape and appearance. Each specific morphological type is then analyzed determining the etiology, visual prognosis, and management. The use of gene markers has allowed many of these variations to be identified and categorized. Cataracts in childhood can involve the whole lens, in which case they are called total, Morgagnian, or disk-like. They can affect only the center of the lens: lamellar, nuclear, oil droplet, cortical, or coronary. They can be anterior: anterior polar, anterior subcapsular, or anterior lenticonus. The posterior aspect of the lens can also be affected in different fashions: Mittendorf's dot, posterior lenticonus, posterior cortical cataracts, or posterior subcapsular. There are five more forms that must be described separately: punctuate lens opacities, sutural cataracts, coralliform or crystalline, wedge-shaped, and persistent hyperplastic primary vitreous. ( Surv Ophthalmol 48: 2003)
Page 1. DETECTION AND TREATMENT OF INFANTILE CATARACTS Scott R. Lambert, MD Luis Amaya, MD David ... more Page 1. DETECTION AND TREATMENT OF INFANTILE CATARACTS Scott R. Lambert, MD Luis Amaya, MD David Taylor, FRCS Infantile cataracts are one of thé few treatable causes of childhood blindness. Many advances ...
Uploads
Papers by Luis Amaya