Eye and Layers¶

Layers of Eye¶

graph TD
    subgraph Eye
      direction LR
      subgraph Cornea-Scleara 
        direction TB
        1[Outer Fibrous Connective Tissue] ==>|anterior facing the world| 1a[Cornea];
        1 ==>|side of cornea| 1b[Sclera]; 
      end
      subgraph Uvea 
        direction TB
        2[middle Vascular Connective Tissue ] ==>|posterior Part| 2a[Chroid];
        2 ==>|inside the  sides of eye facing outside | 2b[Ciliary BOdy];
        2 ==>|inside the outer part of cornea| 2c[Iris body];
        2 ==>|middle of cornea| 2d[hole in Chroid];
      end
      subgraph Retina
        direction TB
        3[inner most Pigmented Retinal layers] ==>|forms 2 layers| 3a[layer over the Chroid] & 3b[inner most];
        3a ==> 3a1[outer pigmented];
        3b ==> 3b1[non pigmenter]
        3b1 ==>|two segments| 3b1a[anterior non pigmented] & 3b1b[posterior non pigmneted];
      end
    end

Cornea¶

graph TD
    subgraph Cornea
    X1[Corneal Epithelium -Stratified Squamous Epithelium with Pain Receptors] ==>|attached to Basement membrane| X2[Bowman's membrane]
    X2 ==>|attaches to Connective Tissue| X3[Dense regular Connective tissue without Blood vessels];
    X3 ==>|attaches to a Basement membrane for bottom Endothelium| X4[Descements BM];
    X4 ==>|attches to Endothelium that supply nutrients| X5[ endothelium ];
    end
    X5 ==> X6[Vitrous Humor];
    X2 -.-> X2x[Protects from Pathogen invasion];

Sclera¶

graph TD
    subgraph Sclera
    X[Cornea] ==>|then turns to | X1[Sclera];
    X1 ==>|Epithelium| X1a[continues 
    till the open end of Eye then folds and covers inner eye lid];
    X1a ==> X1a1[Conjunctiva];
    X1 ==>|Connective Tissue| X1b[Becomes Vascularised];
    end

Uvea¶

1. Chroid - Pigment and Vascularised 
2. Ciliary - Pigmented ,Vascularised and Smooth muscle 
3. Iris

graph TD
    X[Uvea] ==> X1[Chroid] & X2[Ciliary] & X3[Iris];
    X2 ==>|and Anterior non pigmented Retina| X2a[Ciliary Process];
    X2a -.-> X2a1[Zonular Fibres] & X2a2[Aqueous Humor];
    X2a2 ==> X2a2a[Nutrient to Lens and Cornea];

F of Aqueous Humor¶

graph TD
    X[Arterial Supplied Ciliary Process Produces Aqueous fluid] ==>|into region between Iris 
    and Lens| X1[Posterior Chamber];
    X1 ==>|to in front of lens| X2[Pupil];
    X2 ==>|between iris and Cornea| X3[Anterior Chamber];
    X3 ==>|drains into | X4[Canal of Schlemm 
    corneal Scleral Junction Venus vessel];

Function of Chroid¶

Light absorption
blood supply

Function of Ciliary Process¶

Pigment to absorb light
Ciliary Muscle with ciliary processes produce
attached to lens
Ciliary Process produce Aqueous Humor

Retina¶

graph LR
    X[retina] ==>|innermost near Chroid| X1[Pigmented];
    X ==>|next to Pigmented| X2[Non-Pigmneted];
    X2 ==>|at shadow of iris| x2a[Anterior];
    X2 ==>|middle | X2b[Posterior];