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level: The Emergence of Contact Lens

Questions and Answers List

Question	Answer
he devised the first optical lens that covered the entire cornea, later added a scleral f lange, with a precorneal space filled with 2% glucose. Glass 'contractbrillen' on irregular corneal surfaces. He fitted shells to six patients with highly irregular corneal surface due to scarring.	Adolf E Fick 1888
He devised the first contact lens for keratoconus and wanted to remodel the corneal curvature by using glass contact shells as splints. Resulted in substantial visual impairment	Eugene Kalt 1888
He used the term 'Hornhaultlinsen' or corneal lens. He noted that a steeper corneal radius needed a larger dioptric correction which he attributed to the lacrimal meniscus. He experienced and described the subjective and objective signs of corneal edema. And observed that tears had a metabolic function.	August Muller 1889
He observed that a "fluid lens" acted as an artificial refracting medium	De Sulzer 1892
He's the first to replace the glucose solution used by Fick with normal saline	Henry H Dor 1892
Devised a spectacle with saline-filled lens cup-'water spectacles'. This cup should be worn for 1 to 1.5 hours. He's bilateral keratonic. His device is known as hydrodiascope	Thomas Lohnstein 1896
In, 1896 to 1912, there's very little progress in the contact lens field. Instead _________ criticize Adolf Fick's works.	Elschnig