Glaucoma, aqueous dynamics and uveitis
Glaucoma assessment integrates optic-nerve structure, visual function, pressure, angle anatomy and disease trajectory. Elevated intraocular pressure is an important risk factor but is neither required for every glaucomatous neuropathy nor sufficient to establish damage by itself. An apparently normal pressure does not exclude progression. The cornea and measurement method can affect interpretation, while OCT and visual fields have artifacts, variability and complementary strengths. A repeatable change needs assessment in the context of baseline risk and the quality of the measurements.
Aqueous drainage has conventional trabecular and unconventional pathways. Medicines, laser procedures and operations modify different components of inflow or outflow. The choice depends on the actual disease mechanism, stage, target, contraindications and patient circumstances. A topical medicine can produce systemic effects, including beta-blocker-related bronchospasm or conduction problems. A first-line category in one guideline does not mean every patient must receive that treatment before an appropriate alternative. Downstream pressure relationships can limit the effect of a trabecular bypass, so a device is not a guarantee of any arbitrarily low pressure.
Angle closure requires distinction among pupillary block, lens-related crowding, aqueous misdirection and other mechanisms. A painful red eye with a shallow chamber and raised pressure is different from a pressure elevation in an open angle. A patent iridotomy does not exclude every cause of a shallow chamber or high pressure. Postoperative chamber depth and pressure must be interpreted with wound integrity, posterior findings and the actual examination. A single pressure number does not identify which surgical or medical pathway is appropriate.
Uveitis is classified by anatomical site, course and relevant infectious or noninfectious mechanism. An anterior-chamber reaction differs from vitritis or a retinochoroidal lesion, although compartments can be involved together. The host, systemic history, exposure and examination determine a targeted investigation strategy. HLA-B27, juvenile arthritis, sarcoidosis and several infections have characteristic associations without making every inflammatory presentation identical. Steroid-only treatment can be inappropriate when infection requires specific therapy, while an immunosuppressed patient can have little apparent inflammation despite serious retinal infection. Chronic or refractory inflammation can also be a masquerade process. Treatment, pressure effects, cataract and macular complications need coordinated reassessment rather than one isolated diagnostic label.