Comparison of the visual performance of iris-fixated phakic lens and implantable collamer lens to correct high myopia

BMC Ophthalmology

Jun Li¹  Xiao-ling Jiao¹  Hui Song¹  Ping-hui Wei¹  Zhe Yu¹ 

[1] Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology Tianjin Medical University, Tianjin Eye Institute, No. 4 Gansu Road, Heping District, 300020, Tianjin, China;

关键词: Phakic intraocular lens;    Implantable collamer lenses;    Light scattering;    Aberration;    Modulation transfer function;   

DOI  :  10.1186/s12886-021-01995-3

来源: Springer

【 摘 要 】

BackgroundTo compare visual performance between the iris-fixated phakic intraocular len (pIOL) and implantable collamer len (ICL) to correct high myopia.MethodsTwenty-four eyes underwent iris-fixated pIOL implantation and 24 eyes underwent ICL implantation. At the 6-month follow-up, the best-corrected visual acuity (BCVA) and uncorrected distance visual acuity (UDVA) were compared between the iris-fixated pIOL and ICL groups. The objective scatter index (OSI), modulation transfer function (MTF) cutoff, and ocular aberrations were performed to evaluate postoperative visual quality between the two groups.ResultsNo significant difference was found in UDVA, BCVA, and spherical equivalent between the iris-fixated pIOL and ICL groups (P > 0.05). Six months after surgery, the following values were significantly higher in the ICL group than in the iris-fixated pIOL group: MTF cutoff, strehl ratio and optical quality analysis system values at contrasts of 9 %, 20 %, and 100 % (P < 0.01). The OSI in the iris-fixated pIOL group was higher than in the ICL group 6 months after surgery (P < 0.01). All high-order aberrations were slightly more severe in the iris-fixated pIOL group than in the ICL group 6 months after surgery, although only trefoil (P = 0.023) differed significantly in this regard.ConclusionsBoth iris-fixated lenses and ICLs can provide good visual acuity. ICLs confer better visual performance in MTF-associated parameters and induce less intraocular light scattering than iris-fixated pIOLs.

【 授权许可】

CC BY