A E K A E K A E K HOWTO APPLY PRESS-ON PRISMS • There is no need to determine the optical centre of the lens. • The glossy side of the Press-On is applied to the inside of the ens. 1. Place the lens onto the Press-On with the inner side of the lens facing the smooth surface of the prism, according to the prescription. 2. Trace the shape of the lens onto the Press-On. 3. Cut the Press-On (1 mm less than the traced shape). 4. Moisten the inside of the lens and apply the Press-On prism with the glossy side facing the inside surface of the lens. Do not use any adhesives. CORRECT POSITIONING OF PRESS-ON PRISM ON LENS The base orientation of the prism is indicated with the word “base” on the prism edge. Mark lens and prism at the same position on their edges to indicate alignment. The Press-On must be positioned onto the lens according to the BASE description indicated in the prescription: NASAL, TEMPORAL, TOP, BOTTOM, DIAGONAL. 4 ALL RIGHTS RESERVED © Prism 7.1 PRESSON EEC dir.93/42 PRISM POWERS IN DIOPTRES - Prism 67 mm - 1 pc. Press-On and 3M are a registered trade mark of 3M Ref. Power 08101 1∆ 08102 2∆ 08103 3∆ 08104 4∆ 08105 5∆ 08106 6∆ Ref. Power 08107 7∆ 08108 8∆ 08109 9∆ 08110 10∆ 08112 12∆ 08115 15∆ Ref. Power 08116 20∆ 08117 25∆ 08118 30∆ 08119 35∆ 08120 40∆ PRESS-ON™ PRISM: Used to treat several ocular motility disorders including strabismus. Advantage of Press-On: practical, lightweight, wide power range. Thin and flexible and easy to fix to existing lenses - held by static adhesion, easily removed. Low cost and low risk treatment during power changes and vision therapy . The pictures show how the image is moved by the prism to accommodate the different direction of the patient’s line of sight. The image is moved in the opposite direction to the base. Prism 1Δ Prism 10Δ Prism 40Δ VIDEO
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