| Authors | Country/City | Number (n) | Mean âge (years) | Mode of diagnostic | Prevalence (%) | Risk Factor |
| BONI S. et al. [5] | Côte d’Ivoire/ Treichville | 240 | 56.39 | Classification of DEWS 2007 | 64.16 | Old age Female gender Diabetes |
| Ouffoue G. Y. et al. [6] | Côte d’Ivoire/ Abidjan | 234 | 49.1 | 7 items questionnaire, TBUT | 7.5 | Old age Femal gender Ordinateur |
| Eballé A. O. et al. [7] | Cameroun/ Douala | 340 | 62 | TBUT, MGD, Test Schirmer I | 52.1 | Old age Femal gender Cataract surgery HTA Antiglaucomateux Consommation d’alcool |
| Muamba N. L. et al. [8] | R D Congo/ Kinshasha | 106 | 61.3 | TBUT, Test Schirmer I et II, Fluoresceine, Vert de Lissamine, OSDI | 90.4 | Old age Femal gender HTA Diabetes Polyarthrite rhumatoïde Antiglaucomateux |