| EON | Ethambutol-induced optic neuropathy |
| RNFL | Retinal nerve fiber layer |
| GCIPL | Ganglion cell layer and inner plexiform layer |
| OCT | Optical coherence tomography |
| PRISMA-COSMIN | Meta-Analyses COnsensus-based Standards for the selection of health Measurement Instruments |
| OMI | Outcome measurement instrument |
| SD | Standard deviation |
| SMD | Standardized mean difference |
| CI | Confidence interval |
| LHON | Leber’s hereditary optic neuropathy |
| OPA1 | Optic atrophy-1 |
| V | Variance |
| SE | Standard error |
| MD | Mean difference |