Perspectives for preclinical mouse models of glaucoma after Boston keratoprosthesis type 1

Exp Eye Res. 2021 Jul:208:108615. doi: 10.1016/j.exer.2021.108615. Epub 2021 May 7.

Abstract

Animal models of the Boston keratoprosthesis type 1 (KPro) are needed to study glaucoma damage after KPro implantation to control for confounding comorbidities common in human KPro recipients. The purpose of this study was to determine the feasibility of establishing a reproducible mouse model of glaucoma after KPro surgery, specifically that of a miniaturized mouse model of KPro (mKPro). In the present study, a total of 20 corneas of donor C57BL/6 mice (n = 10) were implanted in one eye of each recipient BALB/C mouse (n = 20), assembled as part of the mKPro, either with or without intraoperative lensectomy. Main feasibility outcomes consisted in incidence rates of loss of tone, capsule nicking, and lens extrusion, as well as acquisition of posterior segment optical coherence tomography (OCT) images. With lensectomy (n = 10), loss of ocular tone and retinal detachment occurred in 100% of mice. Without lensectomy (n = 10), capsule nicking and opening, as well as lens extrusion, occurred in 80% of mice. Causes of these complications included the large proportion of intraocular volume occupied by the lens, the shallow anterior chamber, and thus the lack of available intraocular volume to implant the KPro if the lens remains present. Successful mouse KPro surgery may require a great deal of practice to be useful as a reproducible model. Animal KPro models ought to be pursued further by research teams in future studies.

Keywords: Animal model; Boston keratoprosthesis; Glaucoma; Miniaturized keratoprosthesis.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Cornea / pathology
  • Cornea / surgery*
  • Corneal Diseases / diagnosis
  • Corneal Diseases / surgery*
  • Glaucoma / diagnosis
  • Glaucoma / etiology*
  • Glaucoma / physiopathology
  • Intraocular Pressure / physiology
  • Mice
  • Ophthalmologic Surgical Procedures / adverse effects*
  • Postoperative Complications*
  • Prostheses and Implants / adverse effects*
  • Tomography, Optical Coherence / methods*
  • Visual Acuity