Relative anterior microphthalmos: morphometric analysis and its implications for cataract surgery

Area of Science:

• Ophthalmology
• Ophthalmic Surgery
• Ocular Morphology

Background:

• Relative anterior microphthalmos (RAM) is a condition characterized by specific ocular morphometric features.
• Understanding the implications of RAM for cataract surgery is essential for patient outcomes.

Purpose of the Study:

• To evaluate morphometric data in patients with relative anterior microphthalmos (RAM).
• To identify risk factors for complications following cataract surgery in RAM patients.

Main Methods:

• A retrospective, comparative study involving 62 patients with RAM and a matched control group.
• Preoperative assessment included anterior chamber depth, lens thickness, axial length, and refraction.
• Analysis compared anatomic features between RAM patients and controls.

Main Results:

• RAM eyes exhibit smaller corneal diameters (<=11 mm) and shallower anterior chamber depths (approx. 2 mm).
• High incidence of glaucoma (77.4%), cornea guttata (45.2%), and pseudoexfoliation syndrome (16.1%) observed in RAM patients.
• Post-cataract surgery complications included temporary corneal edema (54.8%) and ciliolenticular block (11.6%).

Conclusions:

• Relative anterior microphthalmos is defined by specific morphometric parameters, including corneal diameter and anterior chamber depth.
• The small anterior segment in RAM contributes to a higher risk of glaucoma and postoperative complications.
• Preoperative identification of RAM patients enables surgeons to anticipate and manage potential surgical challenges.