diff --git a/devNotes/eye functions.md b/devNotes/eye functions.md
new file mode 100644
index 0000000000000000000000000000000000000000..e1bdb1a49e240fd267cc3749277d67c1979cb098
--- /dev/null
+++ b/devNotes/eye functions.md
@@ -0,0 +1,133 @@
+## Eye Functions
+
+In all functions `side` can be `left`, `right` or `both` unless stated otherwise.
+
+Eye types: `1`: normal; `2`: glass; `3`: cybernetic
+`0` is used as return value if there is no eye, but is never stored in the slave object.
+
+Vision: `0`: blind; `1`: nearsighted (or impaired/blurred); `2`: normal
+
+### Read-only functions
+
+* `hasAnyEyes(slave)`:
+ True if slave has at least one eye.
+
+* `hasAnyNaturalEyes(slave)`:
+ True if slave has at least one eye that is natural.
+
+* `hasAnyProstheticEyes(slave)`:
+ True if slave has at least one eye that is prosthetic (cybernetic or glass).
+
+* `hasAnyCyberneticEyes(slave)`:
+ True if slave has at least one eye that is cybernetic.
+
+* `hasBothEyes(slave)`:
+ True if slave has both eyes.
+
+* `hasBothNaturalEyes(slave)`:
+ True if slave has both eyes and they are natural.
+
+* `hasBothProstheticEyes(slave)`:
+ True if slave has both eyes and they are prosthetic (cybernetic or glass).
+
+* `hasBothCyberneticEyes(slave)`:
+ True if slave has both eyes and they are cybernetic.
+
+* `hasLeftEye(slave)`:
+ True if slave has left eye.
+
+* `hasRightEye(slave)`:
+ True if slave has right eye.
+
+* `getLeftEyeType(slave)`:
+ Returns type of the left eye.
+
+* `getRightEyeType(slave)`:
+ Returns type of the right eye.
+
+* `getLeftEyeVision(slave)`:
+ Returns vision of the left eye.
+
+* `getRightEyeVision(slave)`:
+ Returns vision of the right eye.
+
+* `getBestVision(slave)`:
+ Returns highest vision of both eyes.
+
+* `getWorstVision(slave)`:
+ Returns lowest vision of both eyes.
+
+* `anyVisionEquals(slave, vision)`:
+ True if one eye has the specified vision.
+
+* `getLeftEyeColor(slave)`:
+ Returns color of the left eye. If there is no eye `empty` is returned.
+
+* `getRightEyeColor(slave)`:
+ Returns color of the right eye. If there is no eye `empty` is returned.
+
+* `getLeftEyePupil(slave)`:
+ Returns the shape of pupil of the left eye. If there is no eye `circular` is returned.
+
+* `getRightEyePupil(slave)`:
+ Returns the shape of pupil of the right eye. If there is no eye `circular` is returned.
+
+* `hasVisibleHeterochromia(slave)`:
+ True if left and right eye colors are different. Does NOT relate to the genetic quirk.
+
+* `getGeneticEyeColor(slave, side)`:
+ Gives the genetic color of the specified eye.
+ `both` is not allowed as value of `side`.
+
+* `getLenseCount(slave)`:
+ Counts the number of eyes that are not the genetic color.
+
+
+### Description
+
+* `App.Desc.eyesType(slave)`:
+ Fits in a sentence like this: She has {return}.
+
+* `App.Desc.eyeTypeToString(type)`:
+ Converts an eye type to a string.
+ `1` -> `natural`
+ `2` -> `glass`
+ `3` -> `artificial`
+
+* `App.Desc.eyesColor(slave, adj = "", eye = "eye", eyes = "eyes")`:
+ Fits in a sentence like this: She has {return}.
+ `adj` is added in between color and eye like this: `brown wet eyes`.
+
+* `App.Desc.eyeColor(slave)`:
+ Fits in a sentence like this: She has {return} eyes.
+ Prefer App.Desc.eyesColor if possible as it works reliably with only one eye. Example where this is better: {return}-eyed gaze
+
+* `App.Desc.eyesVision(slave)`:
+ Fits in a sentence like this: She has {return}.
+
+* `App.Desc.eyesToVision(slave)`:
+ Converts an eye vision to a string.
+ `0` -> `blind`
+ `1` -> `nearsighted`
+ `2` -> `normal`
+
+
+### Modification
+
+* `eyeSurgery(slave, side, action)`:
+ Modifies a slaves eyes.
+ Allowed values for `action`:
+ No Existing eyes required: `normal`, `glass`, `cybernetic`
+ Existing eyes required: `remove`, `blind`, `blur`, `fix`
+
+* `setEyeColor(slave, color, side = "both")`:
+ Changes the visible eye color.
+
+* `setEyeColorFull(slave, iris, pupil, sclera, side)`:
+ Changes all visible parts of the eye.
+
+* `setGeneticEyeColor(slave, color, heterochromia = false)`:
+ Changes the genetic eye color. WARNING: If `heterochromia` is `true`, the function will add the genetic quirk, even if the slave did not have it before.
+
+* `resetEyeColor(slave, side)`:
+ Sets the eye color to the genetic color. Takes heterochromia and albinism into account.
\ No newline at end of file
diff --git a/src/js/statsChecker/eyeChecker.js b/src/js/statsChecker/eyeChecker.js
index a66077a004564d73e4884ad994db15ae15c44ff3..058e3c1016904d72a7900d94480c5603734035b7 100644
--- a/src/js/statsChecker/eyeChecker.js
+++ b/src/js/statsChecker/eyeChecker.js
@@ -98,7 +98,7 @@ window.hasRightEye = function(slave) {
};
/**
- * Returns type of the left eye. Uses new IDs.
+ * Returns type of the left eye.
*
* @param {App.Entity.SlaveState} slave
* @returns {number}
@@ -112,7 +112,7 @@ window.getLeftEyeType = function(slave) {
};
/**
- * Returns type of the right eye. Uses new IDs.
+ * Returns type of the right eye.
*
* @param {App.Entity.SlaveState} slave
* @returns {number}
diff --git a/src/js/surgery.js b/src/js/surgery.js
index 5ab49f55679f6470566ed67840029560921b52b9..27a6159e36926dbd70f283e03e343bf9c58e30d9 100644
--- a/src/js/surgery.js
+++ b/src/js/surgery.js
@@ -644,7 +644,7 @@ window.setGeneticEyeColor = function(slave, color, heterochromia = false) {
/**
* Sets the eye color to the genetic color.
- * Takes heterochroma and albinism into account.
+ * Takes heterochromia and albinism into account.
*
* @param {App.Entity.SlaveState} slave
* @param {string} side
diff --git a/src/npc/descriptions/eyes.js b/src/npc/descriptions/eyes.js
index d9816939a2f76c9b29ea90ff26e160ebd6fb361c..564f0f08def476ac990a7962b24faa9252ebcddb 100644
--- a/src/npc/descriptions/eyes.js
+++ b/src/npc/descriptions/eyes.js
@@ -141,9 +141,9 @@ App.Desc.eyeVisionToString = function(type) {
switch (type) {
case 0:
return "blind";
- case 2:
+ case 1:
return "nearsighted";
- case 3:
+ case 2:
return "normal";
default:
return "unknown eye vision: " + type;