{"id":57,"url":"https://cclm.media-doc.io/conditions/57/","name":"Lens Mislocation – Soft Toric","category":"Contact Lens","detail":"<p>Tear break-up time, deposits</p>\n\n<h2>Symptoms</h2>\n\n<ul>\n\t<li>Decreased or variable vision</li>\n</ul>\n\n<h2>Signs</h2>\n\n<ul>\n\t<li>Toric location marks misalign</li>\n\t<li>Sphero-cylindrical over-refraction is non-plano</li>\n</ul>\n\n<h2>Etiology</h2>\n\n<ul>\n\t<li>Axis of hydrogel toric lens fails to locate correctly or consistently</li>\n</ul>\n\n<h2>Prevalence</h2>\n\n<ul>\n\t<li>Common. But newer designs reducing the prevalence</li>\n</ul>\n\n<h2>Differential Diagnosis</h2>\n\n<ul>\n\t<li>Compare with actual change in ocular refraction</li>\n\t<li>For empirical confirmation of toric lens power, check:\n\t<ol>\n\t\t<li>relationship to refraction</li>\n\t\t<li>relation between ocular and corneal cylinder axis y</li>\n\t</ol>\n\t</li>\n</ul>\n\n<h2>Management</h2>\n\n<ul>\n\t<li>If asymptomatic, no treatment</li>\n\t<li>Reorder lens with compensatory axis change</li>\n\t<li>Change lens design. Figure above shows designs with shading for the thickened stabilization zones</li>\n\t<li>Avoid compromising cornea with low Dk/t toric lenses; consider SiH toric lenses or GP lenses</li>\n</ul>","images":[{"name":"Lens Mislocation – Soft Toric","file":"https://cclm-static.s3.amazonaws.com/images/lens-mislocation-soft-toric.jpg"},{"name":"Lens Mislocation – Soft Toric","file":"https://cclm-static.s3.amazonaws.com/images/toric-lens-markings.jpg"}],"type":1,"videos":[],"wear":false,"ceaseWear":false,"changeLens":true,"changeSolutions":false,"changeCare":false,"counseling":false,"dd":false,"dw":false,"gp":true,"replace":false,"review":false,"rewettingDrops":false,"rx":false,"SiHy":true,"toric":false,"tags":[]}