Accommodative Intraocular Lens System

An accommodative intraocular lens system [comprising a base and a bonnet that is attachable or attached to the base, wherein the base comprises a base lens and a base collar surrounding and holding the base lens, and the bonnet comprises a bonnet lens and a bonnet ring surrounding and holding the bonnet lens, wherein

• when the base is attached to the bonnet, the base lens and the bonnet lens are movable relatively to each other and the base lens and the bonnet lens can assume at least one relative position in which the anterior face of the base lens and the posterior face of the bonnet lens press against each other forming a contact area, wherein at least one face of at least one of the base lens and the bonnet lens is flat or concave, and wherein the base collar and the bonnet ring can be mated with each other in order to attach the bonnet to the base so that an anterior face of the base lens is located opposite a posterior face of the bonnet lens.

An accommodative intraocular lens system comprising a base and a bonnet that is attachable or attached to the base, the base comprising a base lens, and the bonnet comprising a bonnet lens, wherein

• when the base is attached to the bonnet, an anterior face of the base lens is located opposite a posterior face of the bonnet lens, the base lens and the bonnet lens are movable relatively to each other, and the base lens and the bonnet lens can assume at least one relative position in which the anterior face of the base lens and the posterior face of the bonnet lens press against each other forming a contact area, wherein
• at least one of the anterior face of the base lens and the posterior face of the bonnet lens is/are elastically deformable and at least one of the anterior face of the base lens and the posterior face of the bonnet lens is convex, and wherein
• the convex anterior face of the base lens or the convex posterior face of the bonnet lens has at least one of a negative spherical aberration and a curvature with a local extremum or discontinuity at a radius greater than 0.5 mm or smaller than 2 mm.

An accommodative intraocular lens system comprising a base and a bonnet that is attachable or attached to the base, the base comprising a base lens, and the bonnet comprising a bonnet lens, wherein

• when the base is attached to the bonnet, an anterior face of the base lens is located opposite a posterior face of the bonnet lens and the base lens and the bonnet lens are movable relatively to each other between a separating position in which the anterior face of the base lens and the posterior face of the bonnet lens are spaced apart from each other, and a contact position in which the anterior face of the base lens and the posterior face of the bonnet lens press against each other forming a contact area, and wherein the ratio of the thickness of the base lens and the bonnet lens is greater than 0.5 and/or smaller than 1.5.

A method of operation of an accommodative intraocular lens system comprising a base and a bonnet that is attached to the base, wherein the base comprises a base lens and a base collar surrounding and holding the base lens, and the bonnet comprises a bonnet lens and a bonnet ring surrounding and holding the bonnet lens, wherein

• the base collar and the bonnet ring are mated with each other for attaching the bonnet to the base so that an anterior face of the base lens is located opposite a posterior face of the bonnet lens, and wherein
• the method comprises a step of the base lens and the bonnet lens moving relatively to each other between a separating position in which the anterior face of the base lens and the posterior face of the bonnet lens are spaced apart from each other, and a contact position in which the anterior face of the base lens and the posterior face of the bonnet lens press against each other forming a contact area.

A method of operation of an accommodative intraocular lens system comprising a base and a bonnet that is attached to the base, the base comprising a base lens, and the bonnet comprising a bonnet lens, wherein

• an anterior face of the base lens is located opposite a posterior face of the bonnet lens and the ratio of the thickness of the base lens and the bonnet lens is greater than 0.5 and/or smaller than 1.5, and wherein
• the method comprises the step of the base lens and the bonnet lens moving relatively to each other between a separating position in which the anterior face of the base lens and the posterior face of the bonnet lens are spaced apart from each other, and a contact position in which the anterior face of the base lens and the posterior face of the bonnet lens press against each other forming a contact area.