OPHTHALMOBYTES

Ophthalmology at your fingertips!

A Virtual Ophthalmology Atlas!

Home: Welcome

Home: Subscribe

Jul 11, 2022
1 min

PBK - Etiology!

-Development of irreversible corneal edema after cataract surgery and IOL implantation. -Initially, there is endothelial trauma followed by progressive stromal and epithelial edema. -The epithelial edema results in the formation of bullae, hence the name bullous keratopathy. Want to know the etiology of PBK? LOOK ABOVE! www.ophthalmobytes.com⁣ Image from Rajan Eye Care Hospital⁣ #ophthalmology #cornea #ophthalmobytes #ophthal ⁣ #doctor #health #medical #vision #education #opt

19 views0 comments

Jul 4, 2022
1 min

Snowflake Cataract!

-Rare type of cataract. -Associated with Diabetes Mellitus. -Can occur in non diabetics also although very rarely. WHAT IS THE MOST COMMON TYPE OF CATARACT IN DIABETICS? ANSWER BELOW! www.ophthalmobytes.com Image from Rajan Eye Care Hospital #ophthalmology #ophthal #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency #apaoyo #

24 views0 comments

Jun 19, 2022
1 min

Weekend Bytes! - Why Cherry Red Spot?

Why does the Cherry Red Spot occur? www.ophthalmobytes.com⁣ ⁣ Image from Rajan Eye Care Hospital #ophthalmology #ophthal #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency #oftalmologia #surgery #surgeon #apaoyo #retina #fundus #macula #cherryredspot

27 views0 comments

Jun 14, 2022
1 min

Vitreous Cyst!

Vitreous cysts can be congenital or acquired. Congenital Cysts: -Remnants of the hyaloid vascular system -Located at hyaloid canal and found in conjunction with a Mittendorf's dot or Bergmeister's papillae. -Stable, do not progress and rarely interfere with visual acuity. -Non-pigmented pearl-gray cysts with a smooth surface, can be sessile or pedunculated. -Located anterior to the optic disc. -Some can be limited in movement due to vitreous strands attaching the cyst to the

27 views0 comments

Jun 6, 2022
1 min

Tan Grading of Pterygium!

Tan et al. gave a morphological classification of pterygium based on its transparency under the microscope. LOOK ABOVE FOR THE GRADING! www.ophthalmobytes.com⁣ Image from Rajan Eye Care Hospital⁣ #ophthalmology #cornea #ophthalmobytes #ophthal ⁣ #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency #apaoyo #pterygium #conjuncti

116 views0 comments

May 28, 2022
1 min

Weekend Bytes - When is disc cupping reversible?

When can cupping be reversed? Congenital glaucoma! www.ophthalmobytes.com⁣ ⁣ Image from Rajan Eye Care Hospital #ophthalmology #ophthal #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency #oftalmologia #surgery #surgeon #apaoyo #retina #fundus #disc #glaucoma #congenitalglaucoma

18 views0 comments

May 22, 2022
1 min

Weekend Bytes - Prevention & Management of Free Cap after LASIK.

www.ophthalmobytes.com Image from Rajan Eye Care Hospital⁣ #ophthalmology #ophthal #lens #flap #freecap #LASIK #refractivesurgery #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency #apaoyo

5 views0 comments

May 21, 2022
1 min

Weekend Bytes - Risk factors for free cap!

-Free cap is an intra-operative complication of LASIK. -In LASIK, a hinged corneal flap is created that allows the excimer laser to be applied on the exposed stromal bed. -If the hinge of the corneal flap detaches, the flap becomes a free cap. LOOK ABOVE FOR THE RISK FACTORS! Tomorrow look out for management of free caps! www.ophthalmobytes.com Image from Rajan Eye Care Hospital⁣ #ophthalmology #ophthal #lens #flap #freecap #LASIK #refractivesurgery #doctor #health #medical #

9 views0 comments

May 14, 2022
1 min

Weekend Bytes - Vitreous prolapse!

-Vitreous prolapse or loss is a condition in which the vitreous gel becomes displaced beyond the posterior capsule into the anterior segment of the eye. -Surgical complication of cataract surgery that can induce macular edema, corneal decompensation, glaucoma, and retinal detachment. Possible risk factors during surgery: -Age <40 years. -Pseudoexfoliation. -Deep set eyes. -High myopia. -Previous history of vitreous loss. -PC tear. -Nd:Yag capsulotomy in pseudophakics. Managem

68 views0 comments

May 9, 2022
1 min

Morning Glory Anomaly!

-It is a congenital, funnel shaped excavation of the posterior fundus that incorporates the optic disk. •Unilateral condition. •Visual acuity 6/60 to finger counting. •Females > males •The disk is markedly enlarged, orange or pink in color, and it may appear to be recessed or elevated centrally within the confines of a funnel shaped peripapillary excavation. •A wide annulus of chorioretinal pigmentary disturbance surrounds the disk within the excavation. •A white tuft of glia

15 views0 comments

Apr 18, 2022
1 min

Serous Pigment Epithelial Detachment.

-Retinal pigment epithelial detachments (PEDs) are characterized by separation between the RPE and the inner most aspect of Bruch's membrane. PATHOGENESIS: - PED from the inner collagenous layer of Bruch's membrane is caused by disruption of the physiological forces maintaining adhesion. - MOA: Reduction of hydraulic conductivity of a thickened and dysfunctional Bruch's membrane, impending movement of fluid from RPE to the choroid. TYPES: -Serous. -Fibrovascular. -Drusenoid.

141 views0 comments

Mar 28, 2022
1 min

Grading of Cells in the AC!

-Dependable indicator of inflammatory activity. -Grading is done by estimating the number of cells in a 1 mm by 1 mm slit beam field, employing adequate light intensity and magnification. -Should be done before pupillary dilatation which can lead to shedding of pigment cells into the aqueous. www.ophthalmobytes.com Image from Rajan Eye Care Hospital #ophthalmology #ophthal #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #opht

95 views0 comments

Mar 27, 2022
1 min

Weekend Bytes - Wyburn-Mason Syndrome!

-Also known as Bonnet-Bechaume-Blanc syndrome, Congenital Unilateral Retinocephalic Vascular Malformation Syndrome, Racemose Angiomatosis. -Non-hereditary congenital neurocutaneous disorder leading to arteriovenous malformations of the brain, orbit, retina and skin. -Caused by an abnormality in the development of blood vessels during embryonic or fetal growth. DIAGNOSIS: -Fundus Exam: Unilateral tortuous dilated retinal vessels. -FFA: Rapid filling of vascular anomalies witho

19 views0 comments

Mar 25, 2022
1 min

DSEK!

Descemet's Stripping Endothelial Keratoplasty! -In DSEK: the patient’s Descemet membrane is peeled off and replaced with a partial thickness graft: a transplanted disc of Posterior Stroma, Descemet and Endothelium. Both donor and host cornea are manually dissected. -In DSAEK: the donor dissection is carried out using a mechanical microkeratome. GOAL of DSEK: -To transplant a healthy endothelial cell layer that will pump the fluid out of the cornea. -Expected to restore cornea

28 views0 comments

Mar 21, 2022
1 min

Signs of Bacterial Keratitis!

-Symptoms are usually more than signs. RISK FACTORS: OCULAR FACTORS • Trauma. • Ocular surface disorders. • Contact lens wear • Drugs (Corticosteroids) SYSTEMIC FACTORS • Diabetes mellitus, HIV positive patients (immunocompromised states). SLIT LAMP EXAMINATION: -An epithelial defect with surrounding stromal infiltration which is usually different for different organisms. -Suppurative stromal infiltration. -Associated conjunctivitis is certain organisms (gonococcal, pne

28 views0 comments

Mar 20, 2022
1 min

Weekend Bytes - Benign Fleck Retina!

-Autosomal Recessive disorder. -Massive mosaic hyaline excrescences along the cuticular layer of Bruch's membrane giving the appearance of multiple yellowish-white lesions of various size extending to the far periphery and sparing the fovea. -Clinically there is no night blindness or any delay in dark adaptation. -FAF: multiple hyperautofluorescent lesions corresponding in location with the flecks. -SD-OCT: discrete deposit accumulation located posterior to the photoreceptor

16 views0 comments

Mar 16, 2022
1 min

PCO!

-Most common complication of cataract surgery. Lens Epithelial Cells → Migration → Proliferation → Differentiation Two types of PCO: 1) FIBROUS: Abnormal proliferation of LEC → presents as wrinkles and folds on the posterior capsule site at the fusion of anterior and posterior capsules 2) PROLIFERATIVE → Elsching’s Pearls Elsching’s Pearls result from aberrant attempts by lens cells attached to the capsule to form new lens fibres -Normally differentiated LEC that line the equ

20 views0 comments

Mar 12, 2022
1 min

Weekend Bytes - Rosette Cataract!

-Petaloid/rosette-shaped opacifications are seen in patients who have sustained blunt or penetrating physical trauma to the eye, and rarely due to electric shock, exposure to infrared energy or ionising radiation. -The force of the blunt trauma may result in coup, contrecoup injury or axial expansion of the lens. -The coup ocular injury is a result of direct impact, and results in formation of a Vossius ring as a consequence of compression of the pigmented posterior iris epit

19 views0 comments

Mar 9, 2022
1 min

Multifocal IOL - Types!

2 types! 1) Refractive Type: -They have annular zones of different refractive powers to provide focus for near and far objects. -Dependent on the size of the pupil to utilize the required zone of lens. -Limitations: a high incidence of dysphotopsic symptoms, high intolerance to pupil decentration and large angle kappa, and a significant loss of contrast sensitivity. 2) Diffractive Type: -These IOLs are engineered with microscopic steps on its surface with a specific phase del

47 views0 comments

Mar 4, 2022
1 min

Myelinated Nerve Fibre!

-Myelination of the optic nerve fibers normally begins at the lateral geniculate body and ceases at the lamina cribrosa. -An abnormal intraocular myelination of the peripapillary nerve fibre layer anterior to the lamina cribrosa is called myelinated nerve fibre layer (MNFL) -Usually unilateral - can be sporadic/ familial/ acquired CAUSE: -Oligodendrocytes are involved- a structural or biochemical defect allows oligodendrocytes to migrate intraocularly and continue myelination

16 views0 comments

Home: Blog2

Home: Instagram

CONTACT

Sashwanthi & Madhuvanthi Mohan

madhuu93@gmail.com

Home: Contact