ABSTRACT
Corneal astigmatism after keratoplasty can be treated optically or surgically. If a step forms after surgery or after removal of the sutures, resuturing is necessary. In cases of extreme astigmatism which are optically not correctable, surgical methods such as keratotomy, keratocauterization or keratoresection have been suggested. The excision of a corneal wedge, introduced in 1975, is a useful method which has now become established. The technique and the results in 8 cases are presented.
Subject(s)
Astigmatism/surgery , Corneal Transplantation , Aged , Astigmatism/etiology , Corneal Diseases/surgery , Corneal Dystrophies, Hereditary/surgery , Female , Humans , Keratoconus/surgery , Male , Middle Aged , Postoperative ComplicationsABSTRACT
Experimental and clinical observations suggested that after alkali burns of the eyes, neutralization of the tissues and the aqueous humor occurred with in hours. The further course of the disease was found to be an inflammatory reaction. Consequently, an anti-inflammatory therapy was introduced and employed with success in experiments and in the clinics.
Subject(s)
Burns, Chemical/therapy , Eye Burns/therapy , Adrenal Cortex Hormones/therapeutic use , Ascorbic Acid/therapeutic use , Eye Burns/chemically induced , Eye Burns/pathology , Humans , Medroxyprogesterone/therapeutic useABSTRACT
The cornea and conjunctiva of rabbits are burned with 0.25 n NaOH for exactly 30 s. Then, the cornea and conjunctiva are cleaned with 0.9% NaCl. After sacrification the cornea is rinsed and the levels of the glucose and lactate are measured. The alterations of the metabolites for corneal nutrition are discussed.
Subject(s)
Burns, Chemical/metabolism , Cornea/metabolism , Eye Burns/metabolism , Animals , Eye Burns/chemically induced , Glucose/metabolism , Lactates/metabolism , Rabbits , Sodium HydroxideABSTRACT
A 5-months-old female baby with Down's Syndrome developed an intermittent spastic ectropion of the upper eyelids. The reasons for this are thought to be the flaccidity of the connective tissue, which is typical in Down's Syndrome, and a little anomaly of the eyelids, the tarsus was too short horizontally and very weak and the upper eyelids were somewhat larger than normal and elongated. Suturing Bangerter's lid-sheets on the upper eyelids for 15 days resulted in a scarring of the tarsus with the lax connective tissue of the upper eyelids. The ectropion disappeared and did not recur.
Subject(s)
Down Syndrome/complications , Ectropion/congenital , Eyelids/abnormalities , Congenital Abnormalities/complications , Ectropion/embryology , Ectropion/etiology , Ectropion/surgery , Eyelids/surgery , Female , Humans , InfantSubject(s)
Acrylates/therapeutic use , Contact Lenses, Hydrophilic , Contact Lenses , Corneal Diseases/therapy , Methacrylates/therapeutic use , Adult , Aged , Epithelium , Humans , Male , Middle AgedABSTRACT
Freshly prepared bovine corneas were stored in medium TC 199 with penicillin and fetal calf serum at +4 degrees C over a storage period of 168h. Every 24h, the levels of glucose, lactate, and pyruvate in the corneal epithelium were estimated. Also the glucose levels in the corneal epithelium and stroma were compared at the same time intervals. Furthermore, alterations in the enzyme pattern of the epithelial cells during storage were observed.
Subject(s)
Cornea/metabolism , Tissue Preservation , Animals , Cattle , Glucose/metabolism , In Vitro Techniques , Lactates/metabolism , Pyruvates/metabolism , Time FactorsABSTRACT
Early alterations of the conjunctiva after alkaliburning (with 0.25 N NaOH) are described. After chemical damage, there is a nearly total loss of conjunctival epithelium, with simultaneous marked edema in the lower conjunctival parts. Alterations of the surface are examined by scanning electronic microscopy (SEM). Within 24 h marked infiltration of round cells into the conjunctival stroma takes place. After burning, we find a rapid decrease in the ATP level in the conjunctiva to about one-tenth of the normal value, whereas glucose and lactate showed only small alterations before and after chemical injury.
