LASIK eye surgery has revolutionized vision correction, offering individuals the opportunity to reduce or eliminate their dependence on glasses and contact lenses. In Houston, individuals seeking vision correction may have heard about two popular options: Traditional LASIK and iLASIK. Understanding the differences between these procedures is crucial in making an…
Tag: Ophthalmology
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Thyroid Eye Signs : Mnemonics
Classification Mnemonic: NO SPECS Class Signs Comment 0 No eye signs or symptoms 1 Only signs of hyperthyroidism Lid lag, Lid retraction 2 Soft tissue swelling Periorbital edema; red, itchy eye 3 Proptosis 4 Extraocular muscle involvement Often results in diplopia; pain especially on upgaze 5 Corneal involvement Generally a…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Superior Orbital Fissure (SOF): Mnemonics
Superior Orbital Fissure (SOF) is a cleft between greater and lesser wing of sphenoid which connects orbit and middle cranial fossa. It is divided into 3 compartments by the tendinous ring (annulus of Zinn). Superior orbital fissure alone (Lateral compartment): Mnemonic: LFTS Superior orbital fissure in tendinous ring (Intermediate compartment):…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Proptosis : Mnemonic based Approach
Proptosis refers to the forward displacement of the eyeball beyond the orbital margin with the patient looking straight ahead. The term “Exopthalmos” is reserved for bilateral proptosis or proptosis due to thyroid eye disease. Proptosis can be evaluated using a mnemonic 15 “P”s. A) Pseudoproptosis ruled out: 1. Enlarged globe:…
Clinical Skills and Approaches 
Schirmer’s test
Schirmer’s test is a measurement of tear production, devised by the German ophthalmologist Otto W.A. Schirmer. Originally, Schirmer used blotting paper to collect tears elicited by one of the 3 methods of stimulating lacrimation: Inserting the strip of paper itself Irritating the nasal mucosa after the cornea had been anesthetized…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Lasers in Ophthalmology – Mnemonic
Order of decreasing wavelength Mnemonic: CHyNa PuRE The laser tissue interaction can be remembered in the reverse order using the mnemonic ACiDiTy. Carbon dioxide (CO2): 10600 (photoThermal) Holmium YAG: 2100 (photoDisruption) Nd:YAG: 1064 (photoDisruption) Pulsed dye laser: 585-600 (photoChemical) aRgon green: 514 (photoChemical) Excimer: 193 (photoAblation) Indications of Laser aRgon…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Ophthalmology Mnemonics
PERIORBITAL EDEMA P: Pregnancy E: Edema: angioedema, cellulitis R: Renal: nephrotic I: Infectious mononucleosis: Hoagland’s sign O: Obstruction: SVC R: Rheumatic: Dermatomyositis, Cutaneous SLE B: Bitten by insect triatomine bug: T cruzi, Chagas disease – Romana’ sign I: Inside cavernous sign thrombosis T: Thyroid [Enroth fullness], Trichinosis A: Allergies, Albumin low L:…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Hypertensive Retinopathy Grading – Simplified
Hypertensive retinopathy has been classified by Keith, Wagener & Barker and Scheie (hypertensive and arteriosclerotic features). With this mnemonic, we will have a grading with combination of all these classifications. Mnemonic: SAFEs I – Slight Systemic (generalized) narrowing of arterioles II – AV deflection (at Angle) and focal narrowing of…