| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Physiologic concept related to vision, function | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Refraction and accommodation, function (observable entity) | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Monocular vision, function | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Pupillary function | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Visual field | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Central foveal vision, function | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Color vision, function (observable entity) | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Peripheral vision, function | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Visual acuity, function (observable entity) | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Visual alteration | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Stereopsis | Is a | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier |  | 
| Blindness AND/OR vision impairment level | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Oguchi's disease | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Blindness - both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Painful blind eye | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Partial sight - both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: severe impairment: lesser eye: blind, not further specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: near-total impairment: other eye: normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Blind left eye | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Blind right eye | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple disability visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Functional visual loss | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: better eye: profound impairment: lesser eye: total impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: near-total impairment: other eye: near-normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: near-total impairment: lesser-eye: not further specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level of vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Night blindness co-occurrent and due to vitamin A deficiency | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: moderate impairment: other eye: normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: better eye: severe impairment: lesser eye: near-total impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: one eye: moderate impairment: other eye: not specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Blindness of one eye | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: moderate impairment: lesser eye: profound impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic blindness | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 3 | 
| Impairment level: better eye: moderate impairment: lesser eye: blind, not further specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: one eye: total impairment: other eye: not specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: moderate impairment: lesser eye: severe impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: better eye: severe impairment: lesser eye: profound impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: one eye: total impairment: other eye: near-normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: severe impairment: other eye: not specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: moderate impairment: other eye: near-normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: profound impairment of both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: low vision of one eye | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Transient visual loss | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: near-total impairment of both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Central blindness | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: severe impairment: lesser eye: not further specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: near-total impairment: other eye: not specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: moderate impairment: lesser eye: near-total impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: profound impairment: other eye: not specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Abnormal dark adaptation curve | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Acquired night blindness | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: better eye: severe impairment: lesser eye: total impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: one eye: profound impairment: other eye: normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: moderate impairment: lesser eye: not further specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: profound impairment: lesser eye: not further specified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Night blindness | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Legal blindness | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level of both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Amaurosis | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: low vision of both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: one eye: severe impairment: other eye: near-normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: near-total impairment: lesser eye: total impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: one eye: severe impairment: other eye: normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: moderate impairment of both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: better eye: profound impairment: lesser eye: near-total impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: total impairment: other eye: normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: better eye: moderate impairment: lesser eye: total impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: one eye: profound impairment: other eye: near-normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Transient blindness | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| AIDS with blindness | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Impairment level: severe impairment of both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Amaurosis fugax | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: total impairment of both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Impairment level: blindness, one eye - low vision other eye | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital blindness | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 3 | 
| Both eyes total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: near total visual impairment, Lesser eye: total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: near total visual impairment, Lesser eye: near total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: profound visual impairment, Lesser eye: total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: profound visual impairment, Lesser eye: near total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: profound visual impairment, Lesser eye: profound visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Better eye: low vision, Lesser eye: profound visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| One eye blind, one eye low vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Better eye: severe visual impairment, Lesser eye: total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: severe visual impairment, Lesser eye: near total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Better eye: severe visual impairment, Lesser eye: profound visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: moderate visual impairment, Lesser eye: total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Better eye: moderate visual impairment, Lesser eye: near total visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Better eye: moderate visual impairment, Lesser eye: profound visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Low vision, both eyes | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: severe visual impairment, Lesser eye: severe visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: moderate visual impairment, Lesser eye: severe visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Better eye: moderate visual impairment, Lesser eye: moderate visual impairment | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Visual loss, both eyes unqualified | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Legal blindness (United States of America) | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 1 | 
| Profound impairment, one eye | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Lesser eye: total visual impairment, Better eye: near normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Lesser eye: total visual impairment, Better eye: normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Lesser eye: near total visual impairment, Better eye: near normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Lesser eye: near total visual impairment, Better eye: normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 | 
| Lesser eye: profound visual impairment, Better eye: near normal vision | Interprets | False | Vision, function (observable entity) | Inferred relationship | Existential restriction modifier | 2 |