| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Lack of tear production | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Scanty tear production | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 1 | 
| Pooling of tears | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal drainage - freely patent | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal drainage - reduced patency | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal drainage - patent only on punctal occlusion | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Lacrimal drainage - not patent | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Finding of lacrimation | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Finding of measures of lacrimation | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Fluorescein tear drainage normal | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Fluorescein tear drainage impaired | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Absence of tears | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Has watering eyes | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Finding of lacrimation and lacrimal drainage | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Finding of lacrimal patency | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Finding of tear drainage | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Finding of fluorescein tear drainage | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Red tears | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Decreased tear film break-up time | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Excessive tear production | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 1 | 
| Watery eye | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Has watering eyes | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Complaining of excess tears | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier | 1 | 
| Complaining of watering eyes | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier |  | 
| Lack of tear production | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 2 | 
| Scanty tear production | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier | 1 | 
| Complaining of excess tears | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier | 1 | 
| Lack of tear production | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 1 | 
| Excessive tear production | Interprets | False | Tear production, function | Inferred relationship | Existential restriction modifier | 1 | 
| Isolated congenital alacrima | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 2 | 
| Alacrima | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 2 | 
| Intellectual disability, alacrima, achalasia syndrome | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 2 | 
| Keratoconjunctivitis sicca | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 3 | 
| Keratoconjunctivitis sicca (excluding Sjögren syndrome) | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 3 | 
| Keratoconjunctivitis sicca, in Sjögren's syndrome | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 4 | 
| Keratoconjunctivitis sicca due to graft-versus-host disease | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 5 | 
| Hypohidrosis, electrolyte imbalance, lacrimal gland dysfunction, ichthyosis, xerostomia syndrome | Interprets | True | Tear production, function | Inferred relationship | Existential restriction modifier | 4 |