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EDITORIAL
Year : 1990  |  Volume : 38  |  Issue : 4  |  Page : 149

Collagen corneal shields


CBM Ophthalmic Instiutte, Little Flower Hospital, Angamally-683 572, Kerala, India

Correspondence Address:
S Tony Fernandez
CBM Ophthalmic Instiutte, Little Flower Hospital, Angamally-683 572, Kerala
India
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Source of Support: None, Conflict of Interest: None


PMID: 2086459

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How to cite this article:
Fernandez S T. Collagen corneal shields. Indian J Ophthalmol 1990;38:149

How to cite this URL:
Fernandez S T. Collagen corneal shields. Indian J Ophthalmol [serial online] 1990 [cited 2019 Oct 23];38:149. Available from: http://www.ijo.in/text.asp?1990/38/4/149/24517

Collagen materials were used by Plastic Surgeons for reconstructive surgeries. They were used primarily for contouring around the eye. Collagen plugs were in­serted into the punctum to decrease tear drainage and enhance antibiotic availability especially in dry eye syndromes. Fyodorov et al used the Collagen Shields in cases of Keratotomy. Now it is being tried in various eye conditions. In Corneal Ulcer it is used as a drug delivery system. It is also used after surgery in Corneal transpla­ntations, Radial Keratotomy and Epikeratophakia. This should appears to facilitate epithelial healing while providing antibiotic delivery.

The Collagen Shields are fabricated from porcine Sclera linked in variable amounts, so that they can be dissolved after 12,24 and 72 hours after insertion.

Animal model studies done on Pseudomonas Keratitis show that Tobramycin treated Collagen shields showed a 30 fold increase in penetration of Tobacin drops as compared to drops without inserting the shield.

Studies done both in the animals and human being show that when the shields are used after Radial Keratotomy the epithelial healing is fast. There is less of stromal Oedema and inflammatory reaction is less.

It has also been found to have a beneficial effect in achieving re-epithelialization following penetrating Keratoplasty and in Keratoconjunctivitis sicca and other dry eye conditions.

These shields are manufactured by Bausch and Lomb as Bio-Cor TM. They are non irritating, non toxic, non inflammatory thin film of 0.0127 mm to 0.710 mm with a 14 mm diameter and a base curve of 9mm. It absorbs fluids and unlike Soft Contact lens confirms to the cor­nea. They must be stored at room temperature.

This new invention holds a promising future. In India we are concerned about its availability and price. I hope it will be available soon for our use at a reasonable price[7].

 
  References Top

1.
Knapp T.R Kaplan E.M., Donalds JR, Injectable Collagen for soft tissue augmentation Plast. Reconstr. Surg. 50 : 398-405, 1977.  Back to cited text no. 1
    
2.
Nicolle FV Use of the Xyderm in the aging face. Aesthetic Plastic Surgery, 6-193-195: 1982.  Back to cited text no. 2
    
3.
Gilbert M: Wilhelmus KR Osato M.S, Intracanalicular Collagen Implants enhance topical antibiotics bio-availability. Cornea-5 : 167-171, 1986.  Back to cited text no. 3
    
4.
Sheets JH, Wassermic EL. The Collagen eye patch, A preliminary report. Am. Ophthalmol: 18: 297-300,1986.  Back to cited text no. 4
    
5.
Fyodorov S.N. Ivashine A1, Boagrov S.N, Amstishavskaya T.S. et al, Efficiency of Collagen covers applications in cases of Keratotomy. Eye Microsurgery, Moscow, Research Institute of Eye Microsurgery, 1984.  Back to cited text no. 5
    
6.
Use of Collagen Corneal Shields in the treatment of Bacterial Keratitis. Sawusch MS, O'Brim TP, Dick JD, Gottsch JD, Am.J. Ophthalmol 106: 279-281.  Back to cited text no. 6
    
7.
Therapeutic and protective properties of the Corneal Collagen Shields Robert H. Marma M.D, J. Cataract. Refractive Surgery 14-496-499.  Back to cited text no. 7
    




 

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