Which materials are commonly used in soft intraocular lenses?

The use of hydrogels, silicone, and acrylic in soft intraocular lenses is primarily due to their desirable optical properties and biocompatibility. Hydrogels provide a high level of water content, which helps to maintain comfort and a natural feel within the eye, mimicking the eye's natural environment. This characteristic also contributes to the lens' transparency and ability to transmit light effectively.

Silicone materials are favored for their flexibility and mechanical strength, enabling the lens to fold easily for implantation through a small incision while retaining shape and function once positioned in the eye. Additionally, silicone's low propensity for protein adhesion makes it less likely to develop opacities over time.

Acrylic materials are appreciated for their excellent optical clarity and reduced risk of glare and halos post-surgery. Modern acrylic lenses can also be manufactured with UV filters, which help protect the retina from harmful sunlight exposure.

In summary, the combination of hydrogels, silicone, and acrylic offers a balance of comfort, durability, and optical performance, making them the optimal choice for soft intraocular lenses.