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INTRAOCULAR SURGICAL TECHNIQUES
Intraocular surgery techniques can be essentially classified in two types:
1)Substitution of the normal ocular lens with an artificial intraocular lens of the correct value for the eye, the correct value of the lens will depend on the axial anterior-posterior length of the eye and the power of the cornea.
2)Insertion of a special intraocular lens into the anterior chamber of the eye to correct the refractive power without removing the natural ocular lens.
SUBSTITUTION OF THE NATURAL CRYSTALLINE LENS
The substitution of the natural ocular lens with an artificial intraocular lens positioned in the eye is performed with the same technique that is commonly used for cataract surgery.
The power of the artificial lens will have to be calculated before surgery depending on the corneal power and axial length of the eye, this intraocular lens will compensate for the original refractive impairment allowing a precise focus of images on the retina.
The advantage of this technique consists in the ability to correct large refractive errors, while the main disadvantage is that in a number of cases glasses will be necessary for near vision.
 Recently it has been possible to use pseudo accommodating intraocular lens that partially eliminate the need for near vision eyeglasses
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