Search results (35 results)

Nov 9 2012 by Norman Byer

This is the normal temporal ora serrata in a 26-year-old man. Note the typical ragged moth-eaten appearance caused by peripheral cystoid degeneration. This appearance may be present in infants but is always present beyond the age of eight years.

Condition/keywords: ora serrata, peripheral cystoid degeneration

Nov 9 2012 by Norman Byer

This shows the normal nasal ora serrata. Note the dentate processes which divide the nasal ora into prominent bays and teeth

Condition/keywords: dentate processes, normal nasal ora serrata, ora bay, ora teeth

Nov 9 2012 by Norman Byer

This is another example of an enclosed ora bay on the temporal side. It is surrounded by normal retina and well separated from the ora serrata, which is toward the upper right just beyond the photograph. The yellow nubbin marks an abortive dentate process.

Condition/keywords: abortive dentate process, enclosed ora bay, normal eye, normal retina, ora serrata, temporal retina

Nov 9 2012 by Norman Byer

This is a cyst of the pars plana located just anterior to the ora serrata in the lower temporal quadrant. It illustrates how far anterior one may visualize the fundus with indirect ophthalmoscopy and scleral indentation. Pars plana cysts are common lesions of no particular clinical significance.

Condition/keywords: cyst of the pars plana, lower temporal quadrant, ora serrata, scleral indentation

Nov 9 2012 by Norman Byer

The next two photographs are of the same lesion in a 28-year-old woman. This view shows a sloping retinal mound with a radial retinal fold in the center. This is not a typical meridional fold for it stops short of the ora serrata and there is no dentate process. The upper temporal ora serrata and pars plana are well shown and peripheral cystoid degeneration is present posterior to the ora.

Condition/keywords: ora serrata, pars plana, peripheral cystoid degeneration, radial retinal fold, sloping retinal mound

Nov 9 2012 by Norman Byer

This is the normal nasal ora serrata showing a prominent meridional fold. Such folds are most commonly seen at the lower part of the upper nasal quadrant, and are present in 26% of the population. They are a normal developmental variation and are often bilateral.

Condition/keywords: meridional fold, normal developmental variation, normal nasal ora serrata, upper nasal quadrant

Nov 9 2012 by Norman Byer

This shows the appearance of scleral indentation in a normal eye. Note the convex shadow which marks the posterior border of the indented area. It is caused in part by a small angle which separates the viewing axis from the illuminating axis thus allowing the observer to see slightly into the shadow beyond the illuminated crest of the indentation. It is also caused in part by viewing the pigment epithelial layer in a tangential manner. This shadow is of great diagnostic usefulness since it becomes a dark background against which many tiny retinal abnormalities can be seen beautifully by contrast. Two other particular advantages of scleral indentation will be demonstrated in the following photographs: First, the ability to see the extreme anterior part of the retina to the ora serrata and beyond, and second, the ability to examine any abnormality in multiple profiles depending on slight movements of the scleral depressor in various directions.

Condition/keywords: extreme anterior retina, posterior border, scleral indentation, shadow, tangential view of pigment epithelial layer

Nov 9 2012 by Norman Byer

This is the same case as seen in the previous photograph but showing an area just below the lower end of the dialysis. It shows a congenital meridional fold at the 2 o’clock meridian with a retinal break at the posterior end possibly caused by the direct injury described previously.

Condition/keywords: meridional fold, ora serrata, retinal break

Nov 9 2012 by Norman Byer

This is a developmental abnormality in a 59-year-old man. It is an enclosed ora bay on the temporal side, an isolated island of normal pars plana epithelium. It is important not to confuse this entity with a retinal break. It has smooth, sloping borders not a sharp, thin, visible retinal edge as a retinal break would have. The border looks exactly like that of the ora serrata, and the grayish pigmented base has the same appearance as the normal pars plana.

Condition/keywords: developmental abnormality, enclosed ora bay, grayish pigmented base, horizontal nasal meridian, pars plana epithelium, smooth sloping borders, temporal retina

Nov 9 2012 by Norman Byer

This glistening yellow globular lesion is a so-called pearl of the ora serrata in a 45-year-old man. Notice location in the tooth of the ora, which is a characteristic of this lesion. Histologically pearls are drusen-like structures which form on the inner side of Bruch’s membrane beneath the pigment epithelium. They are seen in about 20% of eyes and are often bilaterally symmetrical. They have no clinical significance but are valuable as landmarks.

Condition/keywords: Bruch's membrane, drusen-like, lesion, ora serrata

Nov 9 2012 by Norman Byer

This 20-year-old wrestler sustained a sharp powerful blow to his right eye from his opponent’s thumb. One hour later he saw hundreds of black specs in his vision and was found to have this dialysis of his retina in the upper nasal quadrant. Note the triangular piece of retina in the center that remained attached to the ora serrata causing the retinal flap to resemble a man’s flared shirt collar.

Condition/keywords: retinal dialysis, retinal tear, upper nasal quadrant

Nov 9 2012 by Norman Byer

This is the same case as seen in the previous photograph but is a different view with the scleral indentation moved more anterior. The retinoschisis is seen to be very peripheral coming at least grossly right up to the ora serrata. Please notice how clear a view one can get of the ora serrata and pars plana using indirect ophthalmoscopy with scleral indentation.

Condition/keywords: ora serrata, retinoschisis, scleral indentation

Nov 9 2012 by Norman Byer

Lesion immediately adjacent to the ora serrata in an 18-year-old boy probably represents lattice degeneration characterized primarily by a reddish crater. It has remained unchanged for more than three years.

Condition/keywords: lattice degeneration, ora serrata, reddish crater

Nov 9 2012 by Norman Byer

This 25-year-old man had pars planitis, peripheral uveitis bilaterally. In this eye it produced a small tractional oval tear of the retina and an inferior retinal detachment. The typical creamy yellow exudates of pars planitis can be seen in the lower right very close to the ora serrata.

Condition/keywords: creamy yellow exudates, inferior retinal detachment, pars planitis, peripheral uveitis, tractional retinal tear

Nov 9 2012 by Norman Byer

This is the eye of a 53-year-old woman with a small elevated cystic area of the peripheral retina at the posterior end of a meridional fold.

Condition/keywords: meridional fold, ora serrata, peripheral retina, small elevated cystic area

Nov 9 2012 by Norman Byer

This is the right eye of a 49-year-old woman showing a tiny retinal break adjacent to the temporal ora serrata. It has remained exactly the same without treatment for nine years.

Condition/keywords: ora serrata, retinal break

Jan 29 2018 by Shani Pillar

During a pars plana vitrectomy for fixation of a dislocated IOL, this finding of pars plana cysts was seen, while performing indentation. Pars plana cysts are not uncommon, but rarely visualized so clearly, given their extremely peripheral location.

Photographer: Dr. Shani Pillar, Meir Medical Center, Kfar Saba, Israel

Imaging device: Intraoperative microscope

Condition/keywords: cyst of the pars plana, ora serrata, peripheral fundus lesion

Dec 10 2012 by Yale L. Fisher, MD

Dr. Yale Fisher presents a sagittal view of a complete posterior detachment demonstrated by the thin preretinal reflection (yellow arrow). Scleral depression (green arrow) at the ora serrata demonstrates the ability to register anatomical position on ultrasound using a scleral depressor.

Condition/keywords: video

Mar 8 2019 by Abdulaziz A. Alshamrani, MD

A 15-year-old female with congenital glaucoma complaining of acute diminution of vision after a blunt trauma.

Condition/keywords: crystalline lens, dropped nucleus, ora serrata

Dec 10 2012 by Yale L. Fisher, MD

There is a posterior vitreous face separation with remaining attachment to a retinal flap tear. Movement of the tear is visible during voluntary motion of the patient's eye. There is strong reflectivity from the flap tear (yellow arrow) and moderate reflectivity from the vitreous face (green arrow). The peripheral retinal tear is seen in this sagittal nasal cut near the medial rectus muscle insertion, which localizes the tear to the ora serrata around the 3 o'clock position.

Condition/keywords: video

Feb 19 2019 by Lancaster Course in Ophthalmology

Tubules and cords of proliferated retinal pigment epithelium (RPE) under a detached retina, at the ora serrata. The surrounding pink collagen and base­ment membrane is also made by the RPE.

Condition/keywords: ora serrata, retinal pigment epithelium

Mar 4 2019 by Lancaster Course in Ophthalmology

Traumatic retinal dialysis in a 15-year-old male who died 2 weeks follow­ing a motorcycle accident. Upper left shows dialysis of the retina at the ora serrata. Upper right shows hemorrhage In the retina of the fellow eye. Sections through dialysis (lower views) show the detached vitreous base with a small tag of adherent retinal tissue (arrow). (E.P. No. 32955)

Condition/keywords: hemorrhage, ora serrata, retinal dialysis

May 18 2020 by McGill University Health Centre

This enucleation specimen shows: “snowballs” or localized inflammatory foci (arrow); and a “snow bank” or inflammation at the ora serrata, the anterior-most limit of the retina. These are caused by a reaction to the subjacent uveitis (arrowhead).

Condition/keywords: intermediate uveitis

May 18 2020 by McGill University Health Centre

The cornea is transparent and thin. The lens is cataractous. The ora Serrata (arrow) demarcates a transition zone in the uveal tract between the pars plana of the ciliary body and the retina.

Condition/keywords: cataract, enucleation

Feb 26 2019 by Lancaster Course in Ophthalmology

Typical peripheral cystoid degeneration (PCD) just posterior to the ora serrata, and reticular peripheral cystoid degeneration located posterior to the typical PCD. Section of reticular peripheral cystoid degeneration showing cystic spaces in the nerve fiber layer (upper right). Lower view shows junction of typical PCD (left} with reticular PCD (right). (Courtesy of Robert Y Foos, M.D. )

Condition/keywords: peripheral cystoid degeneration