Clinical features of exophytic papilloma versus inverted papilloma of the conjunctiva
| Inverted papilloma3–10 | Exophytic papilloma20 | |
| Age (mean, range) | 53.2 years (11–85) | 39.6 years (17–84) |
| Sex | Even gender distribution | Male predominance |
| Appearance | Commonly pigmented | Rarely pigmented |
| Localisation | Most often nasal and superiorly | Most often nasal, inferiorly and at the caruncle |
| Malignancy | Described in 2 of 15 at the time of diagnosis | Synchronous carcinoma rare |
| Human papillomavirus (HPV) | 2 of 6 of tested lesions HPV-positive | Strongly associated with low-risk HPV types |