Modular intraocular lens designs, tools and methods
Modular IOL systems including a base and a lens, wherein the lens includes tabs for connection to the base. The modular IOL allows for the lens to be adjusted or exchanged while leaving the base in place, either intra-operatively or post-operatively.
1. A modular intraocular lens (IOL) system, comprising:
a base, comprising:
an anterior section surrounding an anterior opening, wherein the anterior section has an anterior end,
a posterior section surrounding a posterior opening, wherein the posterior section has a posterior end,
a wall extending between the anterior and the posterior sections, wherein the wall includes a radially inner surface, and wherein a ratio between: (a) a dimension of the base between the anterior and the posterior ends, measured along an anterior-posterior direction, and (b) a diameter of the base, is between 0.11 and 0.14,
a passage extending through the base from the anterior opening to the posterior opening, and
a recess surrounding the passage, wherein the recess is defined by surfaces of:
(a) the anterior and the posterior sections, and
(b) the radially inner surface of the wall; and
a lens configured for insertion into and removal from the base, the lens comprising:
an optic, and
at least one tab protruding from the optic, wherein when the lens is inserted into the base, the tab is received by the recess of the base, and the optic extends across the passage of the base.
2. The modular IOL system of claim 1 , wherein the dimension of the base between the anterior and the posterior ends, measured along the anterior-posterior direction, is 1.01 mm, and wherein the diameter of the base is 7.68 mm to 7.88 mm.
3. The modular IOL system of claim 1 , wherein a thickness of the anterior section decreases as the anterior section approaches the anterior opening.
4. The modular IOL system of claim 1 , wherein the anterior section is sloped relative to the wall.
5. The modular IOL system of claim 1 , wherein an anterior surface of the anterior section is sloped relative to the wall.
6. The modular IOL system of claim 1 , wherein a posterior surface of the anterior section is sloped relative to the wall.
7. The modular IOL system of claim 1 , wherein anterior and posterior surfaces of the anterior section have different slopes relative to the wall.
8. The modular IOL system of claim 1 , wherein each of the anterior and the posterior surfaces of the posterior section includes a part extending perpendicular to the wall.
9. The modular IOL system of claim 1 , wherein each of the anterior and the posterior surfaces of the posterior section includes a part that is sloped relative to the wall.
10. The modular IOL system of claim 1 , wherein the posterior section includes a dimension, measured along the anterior-posterior direction, that is 0.15 mm.
11. The modular IOL system of claim 1 , wherein:
(a) a diameter of the anterior opening is 6.40 mm;
(b) a diameter of the recess is 7.00 mm; and/or
(c) a diameter of the posterior opening is 5.30 mm.
12. The modular IOL system of claim 1 , wherein the base further comprises a pair of haptics protruding radially outwardly from the wall, and wherein a distance between tips of the pair of haptics is between 12.80 mm and 13.20 mm.
13. The modular IOL system of claim 12 , wherein the base has a hole extending through one of the haptics, and wherein a distance between a central longitudinal axis of the base and a central longitudinal axis of the hole is 4.25 mm.
14. The modular IOL system of claim 1 , wherein:
(a) the lens has a maximum width of 6.92 mm;
(b) the optic has a diameter between 5.36 mm and 5.66 mm;
(c) the optic has a thickness, measured along the anterior-posterior direction, of 0.20 mm;
(d) the at least one tab has a thickness, measured along the anterior-posterior direction, between 0.28 mm and 0.32 mm; and/or
(e) the at least one tab has a hole extending therethrough, the hole having a diameter between 0.26 mm and 0.30 mm.