Clinical Exploration Of Precise Selection Of Pcpiol Models And Placement Locations

To accurately select PCPIOL model and placement position, obtain more ideal vault, reduce the base note rate and replacement rate of PCPIOL implantation, and explore the feasibility of personalized PCPIOL surgery. 

Existing literature identifies vault parameters as the critical factor influencing postoperative complications in PCPIOL (posterior chamber phakic intraocular lens) implantation. Non-ideal vault measurements often require subsequent surgical interventions - including lens transposition or complete replacement - which may predispose patients to sight-threatening risks such as intraocular infection and progressive corneal endothelial decompensation. 

There was no statistically significant difference in preoperative WTW, ACD, and LT between groups A and B (P>0.05). There was a statistically significant difference in the number of eyes with a postoperative vault of less than 250um between groups A and B (P<0.05). There was no statistically significant difference (P>0.05) in the number of eyes with an vault of ≥ 250um and ≤ 750um between groups A and B after surgery. The number of eyes with postoperative vault greater than 750um between Group A and Group B was statistically significant (P<0.05). Postoperative vault: Group A was (427.23 ± 171.98) um, Group B was (464.41 ± 170.50) um, and the difference was statistically significant (P<0.05). A total of 18 eyes (7.63%) with abnormal vault in Group A underwent secondary surgery, including 11 eyes (4.67%) with PCPIOL repositioning and 7 eyes (2.97%) with PCPIOL replacement. A total of 3 eyes (1.55%) underwent secondary surgery for abnormal vault in Group B, of which 2 eyes (1.03%) underwent PCPIOL repositioning, PCPIOL replacement in 1 eye (0.51%). There is a statistically significant difference in the secondary surgery rates between groups A and B (P<0.05).

By creating an improved OCOS table and combining it with the anatomical characteristics of the vertical elliptical structure of the human ciliary sulcus, precise measurement of STS at different axial positions was carried out to balance various factors affecting the postoperative vault of PCPIOL. The PCPIOL model was accurately selected before surgery, and the placement position of PCPIOL was set to achieve a more ideal vault. The adjustment and replacement rates of PCPIOL implantation surgery were reduced, and good clinical results were obtained, exploring a new approach for personalized PCPIOL surgery.