Layalie l Hassan2023-01-112023-01-112005 10http://hdl.handle.net/123456789/18601project submitted as partial fulfiment of the Requirments of master Dcgree in optometryAIISTR/\Cl' Twenty-four solt contact lenses were examined against six contact lens multipurpose solutions. Twelve lenses were corne from Group 2 lens (l |)A classification) and twelve lenses were come from Group 4. lixperirnental method was used in this project, Investigation procedures were conducted in medical laboratory of/\l-Walidain liye Hospital in ()rndunnan Sudan. in Octoher 2005. The purpose olithis study is to evaluate the eflicicncy of contact lens cleaning solutions in removing eyeliner surface deposition that adhere to various solt contact lenses. Measurement of eyeliner surface depositions before and alter cleaning solt lenses was done using visual inspection by naked eye and examination under light microscope. Result showed all studied contact lenses cleaning solutions to be ellcctive in removing eyeliner depositions from contact surlaces. and cleaning elilicacy is at same level. ‘l he eyeliner was less likely to adhere and easy to clean with (iroup 4 lens. 'l his was related to ionicity oi‘ lens material. Key words; contact lenses. depositions_ cleaning solution and lens material llCLEANING SOLUTIONThesis