Lenticular Abnormalities
- Lens changes occur uncommonly in juvenile-onset diabetes mellitus.
- Snowflake-like white opacities and vacuoles develop within lens.
- Cataracts progress and mature rapidly during adolescence.
- Sudden myopia development precedes cataract formation due to altered lens optical density.
- Congenital lens opacities manifest in children born to diabetic and prediabetic mothers.
Diabetic Retinopathy
- Represents major ocular complication requiring sufficient disease duration and severity.
- Retinopathy prevalence increases significantly after puberty and relates to metabolic control.
| Retinopathy Stage | Characteristic Findings | Clinical Complications |
|---|
| Nonproliferative | Retinal microaneurysms appear as tiny red dots. Venous dilation occurs alongside deep waxy exudates. Hemorrhages manifest as dot, blot, splinter, or flame-shaped. Cotton-wool spots represent superficial nerve fiber infarcts. | Macular edema leads to decreased central vision. |
| Proliferative | Neovascularization and fibrovascular tissue proliferation extend into vitreous. Neovascularization involves optic disc, retina, iris, and anterior chamber angle (rubeosis irides). | Traction causes vitreous hemorrhage, cicatrization, and retinal detachment. Secondary glaucoma develops due to iris neovascularization. |
Optic Neuropathy And Syndromic Associations
- Optic neuropathy develops, characterized by disc swelling and blurred vision.
- Heredodegenerative optic atrophy associates with sensorineural hearing loss in juvenile-onset insulin-dependent diabetes.
- Wolfram syndrome presents with diabetes insipidus, diabetes mellitus, optic atrophy, and deafness.
