Collagen shields Soft Shield

Soft contact lenses and collagen shields absorb drugs from solution and then slowly release them when placed on the eye. This form of drug therapy can be valuable when continuous treatment is desired (see Chapter 3). 

O Brien, T.P., et al. 1988. Use of collagen corneal shields versus soft contact lenses to enhance penetration of topical tobramycin. J Cataract Refract Surg 14 505. 

Comeal shields are medical devices that are used as a bandage for protection of the cornea and to allow healing following surgery. Initially, hydrophilic soft contact lenses used for vision correction were employed as comeal shields. Collagen was then introduced as a substitute for the plastic noneroding bandage lens. They are widely used... 

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