Mobile Laser Indirect Ophthalmoscope: For the Induction of Choroidal Neovascularization in a Mouse Model

Dov Weinberger, Elite Bor-Shavit, Tilda Barliya, Mor Dahbash, Opher Kinrot, Dan D. Gaton, Yael Nisgav, Tami Livnat

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: This study aims to evaluate and standardize the reliability of a mobile laser indirect ophthalmoscope in the induction of choroidal neovascularization (CNV) in a mouse model. Materials & Methods: A diode laser indirect ophthalmoscope was used to induce CNV in pigmented male C57BL/6J mice. Standardization of spot size and laser intensity was determined using different aspheric lenses with increasing laser intensities applied around the optic disc. Development of CNV was evaluated 1, 5, and 14 days post laser application using fluorescein angiography (FA), histology, and choroidal flat mounts stained for the endothelial marker CD31 and FITC-dextran. Correlation between the number of laser hits to the number and size of developed CNV lesions was determined using flat mount choroid staining. The ability of intravitreally injected anti-human and anti-mouse VEGF antibodies to inhibit CNV induced by the mobile laser was evaluated. Results: Laser parameters were standardized on 350 mW for 100 msec, using the 90 diopter lens to accomplish the highest incidence of Bruch’s membrane rupture. CNV lesions’ formation was validated on days 5 and 14 post laser injury, though FA showed leakage on as early as day 1. The number of laser hits was significantly correlated with the CNV area. CNV growth was successfully inhibited by both anti-human and mouse VEGF antibodies. Conclusion: The mobile laser indirect ophthalmoscope can serve as a feasible and a reliable alternative method for the CNV induction in a mouse model.

Original languageEnglish
Pages (from-to)1545-1551
Number of pages7
JournalCurrent Eye Research
Volume42
Issue number11
DOIs
StatePublished - 2 Nov 2017

Keywords

  • Anti VEGF
  • CNV
  • mobile laser
  • mouse model
  • ophthalmoscope

Fingerprint

Dive into the research topics of 'Mobile Laser Indirect Ophthalmoscope: For the Induction of Choroidal Neovascularization in a Mouse Model'. Together they form a unique fingerprint.

Cite this