Immediate effects of diamond burr debridement in patients with spontaneous chronic corneal epithelial defects, light and electron microscopic evaluation

被引：13

作者：

Dawson, Charlotte ^{[1
]}

Naranjo, Carolina ^{[2
,3
]}

Sanchez-Maldonado, Belen ^{[2
]}

Fricker, Georgina V.

Linn-Pearl, Rose N. ^{[4
]}

Escanilla, Natalia ^{[1
]}

Kafarnik, Christiane ^{[4
]}

Gould, David J. ^{[4
]}

Sanchez, Rick F. ^{[1
]}

Matas-Riera, Marian ^{[1
]}

机构：

[1] Univ London, Royal Vet Coll, Ophthalmol Serv, Hawkshead Lane, N Mymms AL9 7TA, England

[2] Univ Complutense Madrid, Dept Med Cirugia & Anim, E-28040 Madrid, Spain

[3] Ocular Pathol Specialists, Madrid 28040, Spain

[4] Davies Vet Specialists, Manor Farm Business Pk, Higham Gobion SG5 3HR, Herts, England

来源：

VETERINARY OPHTHALMOLOGY | 2017年 / 20卷 / 01期

关键词：

canine; cornea; diamond burr; spontaneous chronic corneal epithelial defects; superficial keratectomy; ulcer; DOGS;

D O I：

10.1111/vop.12337

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

Purpose To evaluate immediate effects of diamond burr debridement (DBD) on the cornea of canine patients diagnosed with spontaneous chronic corneal epithelial defects (SCCEDs). Animals studiedEight client owned dogs with SCCEDs. Methods Nine eyes from eight dogs with SCCEDs underwent superficial keratectomy (SK). The ulcerated area was divided into quadrants with a 300-micron restricted depth knife. Two of four quadrants underwent DBD for 40-60s. A SK followed immediately. One burred section and one nonburred section were fixed with formaldehyde 10% and underwent light microscopy (LM). The remaining quadrants from five eyes were fixed with glutaraldehyde 2.5% and underwent transmission electron microscopy (TEM). Masked pathologists evaluated the samples. A student's paired t-test was used to analyze the data. Results With LM all nonburred samples had a superficial stromal hyaline acellular zone (HAZ), seven of the burred samples had an intermittent HAZ and in two burred samples this zone was absent. The HAZ thickness of burred samples (1.062 +/- 0.664 mu m) was significantly thinner than that of the nonburred samples (4.309 +/- 1.348 mu m) (P<0.0001). Transmission electron microscopy showed an absence of basement membrane and the presence of an amorphous, fine fibrillar material in the superficial stroma in nonburred samples. This material was intermittent or absent in burred samples. Conclusion DBD significantly reduces the superficial stromal HAZ in SCCEDs. A reduction of its thickness may be responsible for the healing rates reported with DBD.

引用

页码：11 / 15

页数：5

共 6 条

[1]

Bentley E, 2001, INVEST OPHTH VIS SCI, V42, P2262

[2] Spontaneous chronic corneal epithelial defects in dogs: A review [J].