Biomaterial Database

[Surgical correction of high degree corneal astigmatism]. 1993

U Mester, and R Grewing

Augenklinik der Bundesknappschaft, Sulzbach.

Many patients with high-grade corneal astigmatism cannot tolerate correction with spectacles or contact lenses. In contrast to myopic patients, in these cases visual rehabilitation can only be achieved surgically. In 1990 we started to perform modified corneal T-incisions in cases with high-grade astigmatism and intolerance to glasses or contact lenses. According to the eligibility criteria for selection of patients only 12 eyes were operated on in 1990: 9 eyes were affected by congenital high-grade astigmatism (mean 5.25 D); 1 had 8.5 D astigmatism after perforating injury, keratoplasty and cataract operation; 1 had 2.5 D astigmatism after perforating injury; and 1 eye showed 5.0 D astigmatism following cataract surgery. Without exception, the astigmatism was significantly reduced, from a preoperative mean of 5.25 D to a mean of 2.0 D postoperatively. The most impressive change was the improvement of uncorrected visual acuity. No complications were observed and none of the patients complained of postoperative glare. These results have encouraged us to continue with surgical correction of high-grade corneal astigmatism.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009216	Myopia	A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.	Nearsightedness,Myopias,Nearsightednesses
D011183	Postoperative Complications	Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.	Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D012029	Refraction, Ocular	Refraction of LIGHT effected by the media of the EYE.	Ocular Refraction,Ocular Refractions,Refractions, Ocular
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D003315	Cornea	The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous CORNEAL EPITHELIUM; BOWMAN MEMBRANE; CORNEAL STROMA; DESCEMET MEMBRANE; and mesenchymal CORNEAL ENDOTHELIUM. It serves as the first refracting medium of the eye. It is structurally continuous with the SCLERA, avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the TRIGEMINAL NERVE via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses. (Cline et al., Dictionary of Visual Science, 4th ed)	Corneas
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D001251	Astigmatism	Unequal or irregular curvature of the CORNEA (Corneal astigmatism) and/or the EYE LENS (Lenticular astigmatism) resulting in REFRACTIVE ERROR.	Corneal Astigmatism,Hyperopic Astigmatism,Lenticular Astigmatism,Mixed Astigmatism,Myopic Astigmatism,Oblique Astigmatism,Astigmatism, Corneal,Astigmatism, Hyperopic,Astigmatism, Lenticular,Astigmatism, Mixed,Astigmatism, Myopic,Astigmatism, Oblique,Hyperopic Astigmatisms,Mixed Astigmatisms,Myopic Astigmatisms,Oblique Astigmatisms