J Korean Ophthalmol Soc.  1998 Oct;39(10):2280-2285.

The Change of Anterior Chamber Depth According to the Types of Intraocular Lens

• Moon SH
• Lee DH
• Lew HM

Abstract

Many factors influence the longitudinal position of the intraocular lens(IOL) months after posterior chamber IOL implantation. This change in position in reflected by the anterior depth(ACD) and refractive error. This study compares the change of ACD and refractive error between two types of IOL: silicone IOL(24 eyes) and polymethyl methacrylate(PMMA) IOL(12 eyes). The ACD of silicone group measured 3.95+/-0.29mm at 1 day, 3.92+/-0.30mm at 1 week, 3.84+/-0.33mm at 1 month, 3.82+/-0.29mm at 3 months. The ACD of PMMA group measured 4.23+/-0.47mm, 4.17+/-0.36mm, 4.16+/-0.50mm, 4.13+/-0.45mm respectively. The refractive error of silicone group measured -0.25+/-0.62D at 1 week, -0.29+/-0.82D at 1 month, , -0.36+/-0.66D at 3 months. The refractive error of PMMA group measured, -0.02+/-0.75D, -0.14+/-0.82D, -0.15+/-0.85D respectively, In the silicone group, the ACE was more shallow and the refractive error was more myopic in all periods compared to the PMMA group, The ACD became more shallow and the refractive error became more myopic in both groups as the interval after insertion increased. Further more this change was greater in the silicone group. Therefore, the change in position after operation should be predicted before the operation and must be considered on calculation of IOL power.

Keyword

Anterior chamber depth; Intraocular lens; Refractive error

MeSH Terms

Anterior Chamber*
Lenses, Intraocular*
Polymethyl Methacrylate
Refractive Errors
Silicones
Polymethyl Methacrylate
Silicones