1. Expulsive supra choroidal hemorrhage during silicone oil removal…
Expulsive supra choroidal hemorrhage during silicone oil removal…..By Dr Hamid Aryaei tabar MD KUMS

2. Major COMlications of so removal
Re RD (25 %)
Hypotony (16%)
SCH(1%)

3. Why we remove so K

4. Causes of so removel Ant segment complications (esp in aphakic eyes )
Post segment complications related to SO
RE-RD
SO emulsifications

5. Techniques for SO REMOVAL
Three port approach (active aspiration by pump vs manual aspiration )
Limbal approach(two port )…(corneal damage, lack of opportunity to check the status of the retina)
Minimally invasive system (23G, 3-port)…use active aspiration with silicone soft canula (most up to date technique )
Heavy oil removal (by 23 G 3-port system vs tubeless siphoning)

6. Risk factors OCULAR SYSTEMIC
INTRA – OPERATIVE(iop fluctuations , Valsalva maneuvers, rise of Blood pressure )

7. Risk factors Athero sclerosis Older ages Multiple operation
Anticoagulant use &coagulation defects
Hx of sch in the operated eye or contralateral eye
High myopia
Trauma Hx DM
HTN
Aphakia
Pseudophakia

8. Risks related to techniques
Sedation or with local anesthesia
Broad post buckling
360 degrees cerclage
Cryo theraphy
SRFD(external )
Prolong surgery
Slippage of infusion cannula into the suprachoroidal space

10. Pathogenesis
Hypotony ,,,low iop with high choroidal vascular pressure
Fragility of choroidal vessels( old age ,athero sclerosis , HTN , DM , axial myopia , glaucoma)
Obstruction of the vortex veins by SB
Direct damage of choroidal vessels (by needle during SRFD), when suturing the sclera during SB
CRYO (early removal of cryo probe while the choroid is still frozen ), cryo fracture
Mechanism of progression(shearing of more traversing vessels by a local hemorrhage )

11. Consequences of sch
Secondary retinal degeneration leading to retinal break and RD
Subretinal hemorrhage which causes photoreceptor damage
Vitreous hemorrhage
Glaucoma
Persistent ocular hypotony

12. Clinical findings Sudden rise of iop Shallowing of AC
Loss of red reflex
Dark brown convexity in the retinal periphery & visualization of ora seratta or pars plana
Bleeding into the subretinal space or vitreous cavity
Signs of prolapse ( vitrous or intraocular contents)
ECHO – B shows extention and concomitant RD( can shows liquefaction)

13. findings

14. How to prevent
Control BP & HTN (brfore and during surgery) systolic BP below 150
Patients using antocoagulantsuch as warfarin ,,,keep INR levels 2-3
Stop antiplatelet medications if possible
Controll inflammation before surgery ( frequent steroids , ST sterois , ….)
Good glaucoma control before surgery
If SCH occurred during previous surgery find the cause and solve it if possible
Avoid iop fluctuation
Avoid hypotonia (intra and post operative)

15. Preventing sch
Cheque position of infusion canula . Prevent possible pulling by intra operative maneuvers
avoid sudden reduction of iop( prefer automated constant iop control ).
Apply external pressure during SRFD
Inject intra ocular injection of air or BSS if large SRFD
Avoid removing cryo probe before it thaws
avoid excess pressure over globe in eyes with friable sclera
Make sure of tight closure of sclerotomies at end of operation(do siedle test with flourscein in special cases)
After removing lid speculum look for hypotony
Avoid Valsalva maneuvrs during GA (prefer laryngeal masks)
In eyes with pre existing sch at the end of surgery prefer liquis rather than Air/Gas because of compresability

16. how to solve it
Cheque infusion line for blockage & that the infusion bag is full
Place another infusion line from a new sclerotomy and close the main line if cannula tip cannot be seen
Increase infusion pressure

17. How to solve it (post operatively)
Depends on site and extent of sch & associated complications
Macula not involved &no other complication …….OBSERVE
Large SCH & or RD , VH , vitreous incarceration do surgery
Surgery include drainage & VR surgery

18. VITREO RETINAL SURGERY FOR SCH
1-2 WEEKS post event
Do ECHO-B and look for liquefaction(kinetic exam )
Drainage can be achieved by sclerotomies if not , do radial sclerotomies at the dependent part of the quadrant involved by SCH
TPA,s injection may help for early liquefaction and surgery( inject IU INTO CLOT &wait for min
Use long cannula
Use PFC

19. Nadarajah technique for sch drainage for massive sch & apposed retina)
180 peritomy (iinferior)
2 full thichness triangular scleral flap 3*3*3 mm at equator (inf-nasal & inf-temporal )
Faps not sutured but cong sutured
0.3 Ml of C3F8 injected intra vitreal
Early intervention

20. Diffrentiall diagnosis
Aphakic Pupillary Block
Choroidal Melanoma
Exudative Retinal Detachment
Malignant Glaucoma
Postoperative Retinal Detachment
Pseudophakic Pupillary Block
Tractional Retinal Detachment

21. Imaging Studies
See the list below:
B-scan ultrasonography can aid in differentiating between serum and blood collected under or within the choroid (shown in the image below). B-scan ultrasonography is also helpful to delimit and stage the extent of the detachment when media are not clear.
can ultrasonography examination of choroidal detachment. Fluid appears to be serum on one side (upper) and blood on the other side (below). Retina-to-retina contact, or kissing choroidal detachment, is present.

22. Medical Care topical corticosteroids, cycloplegics, mydriatics
. Oral steroids
 When the IOP is high, which can occur with hemorrhagic choroidal detachments, IOP-lowering drugs can be used. Osmotics and aqueous suppressants are recommended.
Parasympathomimetics are contraindicated.

23. Surgical Care
If choroidal detachment persists longer than 1 week after the underlying cause has been identified and addressed, drainage of the suprachoroidal fluid should be considered
. The 7-day limit is an indication only; individualized assessment is key.
If an improvement is suspected, waiting longer and closely monitoring the patient may be warranted.
Immediate action is indicated when lens-cornea touch or IOL-cornea touch exists. This condition causes endothelial corneal damage and acceleration of lens opacities.

24. Surgical care
If the AC remains flat after the cause has been identified and addressed, injection of viscoelastics into the AC should be considered.
If lens-cornea touch or IOL-cornea touch exists, the AC reformation should be performed immediately, at the slit lamp if possible, while waiting to assess the need for suprachoroidal fluid drainage.

25. Sch drainage
suprachoroidal space. After the posterior sclerostomies are ated.

26. Surgery for sch
The AC reformation at the slit lamp is best performed through a paracentesis tract in the peripheral cornea; paracentesis tracts usually are made at the time of cataract or glaucoma surgery.
If not present, a paracentesis should be made with extreme care because the eye is likely to be soft and sore with a peripherally flat chamber; otherwise, inadvertent iris and lens damage may result. Performing a small full-thickness corneal incision with a sharp 15° knife is safer.
A cooperative patient is mandatory if the procedure is to be performed safely at the slit lamp.
The AC reformation procedure requires preparation with topical anesthesia, povidone-iodine preparation, and assistants to hold the lids and head of the patient.

27. technique for suprachoroidal fluid drainage
With paracentesis in the peripheral cornea. , balanced salt solution (BSS) is injected to fill the AC
. The paracentesis site made at the time of surgery can be used.
Preoperatively, the sectors where the most fluid is accumulated should be identified by ophthalmoscopy or B-scan ultrasonography.
Beginning with the sector where the detachment is largest, posterior sclerostomy is performed at 4-5 mm from the limbus.
Circumferential cuts are made, producing an incision of about 2 mm in length. This is shown in the illustration in the next slide

28. i
As soon as the suprachoroidal space is reached, the fluid drains. Serous detachments drain clear yellow fluid. Hemorrhagic detachments drain dark red fluid, often particulated with blood clots, shown in the image below. Gentle poking with a blunt instrument a few millimeters around the sclerostomy helps drainage when spontaneous flow slows down.

29. Sch drainage
after one quadrant is drained, the AC is filled again with BSS, and the second quadrant receives a posterior sclerostomy in the same fashion. This procedure can be repeated for all 4 quadrants.
At the end, especially in highly myopic eyes without a lens, SF6 gas can be left in the vitreous cavity to tamponade. No agreement exists regarding the closure of sclerostomies, which some surgeons elect to leave unsutured to allow for more drainage.

30. prognosis
Variable ,,,depends on location and severity of condition & presence of associated conditions
When not involve the macula sisual outcome is acceptable
Massive sch ….. Severe v.loss
NLP in % despite multiple intervention
Massive cases 86 % NLP

31. POOR VISUAL AND ANATOMIC OUTCOME
Initial RD
Long duration of retinal apposition
Vitreous incarceration into the wound
360 – degree SCH
Involvement of post pole
Secondary glaucoma
hypotony

32. معبد اناهیتا کنگاور کرمانشاه
Thank you for your attention
معبد اناهیتا کنگاور کرمانشاه
Dy : DR Hamid Aryaei TabarMD KUMS 9th Iranian vitreo retinal congress