Useful Articles / My Blog

The author of the blog, Reyus Mammadli, shares personal notes and professional experience related to eye health, ophthalmic equipment, and clinical procedures. The goal of these articles is to help readers gain a deeper understanding of vision and eye health, approached from the standpoint of biomedical and medical engineering.

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Engineering diagram showing how diagnostic devices convert raw optical signals into astigmatism labels through processing and algorithmic thresholds.
Diagnostic Devices 0
How Diagnostic Devices Identify Mixed Astigmatism: Measurement Technologies and Their Limitations
When clinicians talk about mixed astigmatism, it is usually framed as a refractive condition
Cutaway diagram showing key OCT components where mechanical, optical, and electronic aging occurs.
Diagnostic Devices 0
Why Mechanics and Optics Define Your OCT’s Lifespan: The Engineering Behind the Image
Optical Coherence Tomography (OCT) systems rarely lose image quality suddenly. In most cases, degradation
Cumulative geometric error in 193 nm excimer laser platforms showing how energy drift and positioning noise affect ablation precision. Prepared by Reyus Mammadli.
Therapeutic Devices 0
Excimer Laser Platforms in Clinical Practice: Beam Delivery Architecture and Ablation Control in Current Commercial Systems
Excimer laser systems used for corneal refractive surgery are 193 nm ultraviolet pulsed ablation
Engineering comparison of Diagnosys Espion and Roland RETIport, prepared by medical equipment engineer Reyus Mammadli
Diagnostic Devices 0
Diagnosys Espion vs RETIport: An Engineering View
When clinicians talk about severe vision loss or total blindness, the discussion often stays
Conceptual schematic of an ophthalmic Nd:YAG laser head showing pump source, crystal, Q-switch, and resonator mirrors.
Therapeutic Devices 0
Ophthalmic Nd:YAG Lasers as a Clinical Platform: Engineering Design, Performance, and System Selection
Ophthalmic Nd:YAG Lasers as a Clinical Platform I approach ophthalmic Nd:YAG laser systems as
Diagram showing what different tonometry methods actually measure via corneal interaction around a central eye.
Diagnostic Devices 0
Engineering Analysis Of Modern Technologies For Intraocular Pressure Measurement
From an engineering standpoint, intraocular pressure (IOP) is not a directly accessible variable. There