Gruber E
Ann Ophthalmol. 1991 Dec;23(12):446-7.
The Bio-Cor collagen shield (Bausch and Lomb, Rochester, NY) is thought to speed corneal epithelial healing and is available in dissolution rates of 12, 24, and 72 hours to suit the needs of the patient. It often is recommended over soft hydrophilic therapeutic lenses for short-term use, such as postoperatively and after corneal abrasions, in which cases the lens should dissolve within the specified period of time. I found these lenses to be unreliable in their dissolution rates. I presented four cases of corneal epithelial breakdown in which the collagen lenses were tried but were not successful. All cases did well with a hydrophilic soft lens, namely the Acuvue disposable lens, used for therapeutic purposes. The advantage of using a disposable lens rather than a standard therapeutic soft lens is its lower cost. Disposable lenses are cheaper than both regular soft lenses and collagen shields. It makes good economic sense to try these as a therapeutic lens of first choice when one is needed.
生物角膜胶原盾（博士伦公司，纽约州罗切斯特市）被认为可加速角膜上皮愈合，有12小时、24小时和72小时的溶解速率可供选择，以满足患者需求。对于短期使用，如术后和角膜擦伤后，通常推荐使用它而非软性亲水治疗性镜片，在这些情况下，镜片应在规定时间内溶解。我发现这些镜片的溶解速率不可靠。我介绍了4例尝试使用胶原镜片但未成功的角膜上皮破损病例。所有病例使用用于治疗目的的亲水软性镜片（即安视优一次性镜片）后情况良好。使用一次性镜片而非标准治疗性软性镜片的优势在于成本较低。一次性镜片比普通软性镜片和角膜胶原盾都便宜。当需要治疗性镜片时，将其作为首选尝试使用具有良好的经济意义。
