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PubMed2000

Modified orbital decompression for dysthyroid orbitopathy.

PURPOSE: The transantral approach to orbital decompression remains useful for the management of exophthalmos associated with dysthyroid orbitopathy. However, the risk of postoperative diplopia is a concern. Preservation of the anterior periorbita may help support the orbital contents and decrease the incidence of diplopia. METHODS: The medical records were reviewed of 15 consecutive patients who underwent 30 transantral orbital decompressions for proptosis associated with dysthyroid orbitopathy. The procedures were completed in standard fashion, including removal of the inferomedial bony strut between the medial orbital wall and the floor. However, stripping of the periorbita was only done posteriorly; the anterior 10 to 15 mm of periorbita were left intact. RESULTS: Six patients had preoperative diplopia that persisted after decompression. Of the nine patients without diplopia preoperatively, none developed diplopia. Proptosis was reduced a mean of 3.5 +/- 2.6 mm. CONCLUSIONS: Preservation of the anterior periorbita during transantral orbital decompression reduces the risk of postoperative diplopia. An adequate reduction in proptosis is also achieved.

Adolescent↗
PubMed1999

[Isolated fractures of the orbital floor. Conclusions of a retrospective study of 85 cases].

UNLABELLED: We present a retrospective study of 85 patients presenting an isolated orbital floor fracture between 1993 and 1997; 79 of them (93%) were operated via a subciliary or transconjunctival approach. Surgical procedure included autologous graft or biomaterial (coral, polydioxanone) depending on the cases. The study was focused on clinical data (concerning diplopia, enophthalmia and sensorial disturbances) which were recorded pre- and post-operatively. RESULTS: 58 patients (68%) had a pre-operative diplopia, and 9 (11%) had a persistent post-operative diplopia: all of these patients were operated more than 8 days after trauma; no post-operative diplopia occurred without pre-operative diplopia; 8 patients (9%) presented a pre-op enophthalmia: all of them came more than 10 days after the trauma; a perfect symmetry was obtained post-operatively in only one of these 8 patients; no enophthalmia occurred in patients without pre-op enophthalmia; sensorial disturbances were seen pre-operatively in 27 patients (32%) and post-operatively in 17 (20%); no correlation was found with the timing or the procedure of the surgery. COMMENTS: The interest of an early diagnosis and treatment is confirmed, in order to avoid late functional (diplopia) or esthetic (enophthalmos) disturbances. Thus it seems necessary to obtain a computed tomography for any orbital trauma as conventional radiography can be less sensitive. Concerning the surgical procedure, resorbable biomaterials seem to be very well tolerated and easy to use. Autologous bone grafts always lead to a certain degree of morbidity without real advantage. The best way seems to be the trans-conjonctival approach, but subciliary incisions can also be used in these cases. The most important remaining problem to solve is probably focused on sensorial disturbances: their incidence is high and there is a high rate of sequels: further studies are obviously necessary to improve the knowledge of etiopathogenic factors and determine the best therapeutic attitude.

Adolescent↗
PubMed2000

[Surgical correction of strabismus in Graves-Basedow ophthalmopathy. Personal experiences].

UNLABELLED: The aim of the study was to evaluate long-term results of surgical treatment of strabismus and diplopia connected with Graves' ophthalmopathy. Surgery of extraocular muscles was performed in 64 patients, previously with different methods for their Graves' ophthalmopathy. All patients showed stabilization of the strabismus angle and diplopia as well as euthyroidism. Before the operation ultrasonography, orbital computed tomography and forced duction test were performed. Before the operation horizontal strabismus with vertical deviation and vertical strabismus were most frequent (36.6% and 35.2%, respectively). A total of 136 operations had been performed. Postoperative follow-up ranged from 6 months to 15 years, including 30 patients with the follow-up exceeding one-year. Recovery or recovery without binocular single vision after surgery was observed in 47 patients (73.4%), including 34 patients (53.1%) with single binocular vision. Improvement was seen in 15 patients (23.4%). No improvement was observed in two cases (3.1%) due to marked vertical strabismus before surgery, they were referred for further surgical treatment. Overcorrection after surgery in 3 cases was observed, and in one case we applied prismatic correction successfully, the two others required reoperation. CONCLUSIONS: 1. Surgical treatment of strabismus and diplopia in Graves' ophthalmopathy is very useful because of high percentage of positive results, confirmed in long-term observation. 2. Diplopia and a large angle of strabismus are a necessary indication for surgical correction of extraocular muscles. 3. A prerequisite for surgical treatment is stable euthyreosis and stabilization of the strabismus angle as well as diplopia and performation of forced duction test for evaluation of stage disease. 4. Prior treatment of ophthalmopathy and duration of strabismus as well as diplopia do not appear to influence this outcome.

Adult↗
PubMedDate not supplied

Double vision.

1. Diplopia may require a simple change in the patient's glasses, various types of surgical correction, or even treatment for a life-threatening condition. Your job is to determine the urgent nature of the problem and have the patient scheduled in your office, clinic, or hospital appropriately. 2. When questions of diplopia arise, establish whether the diplopia is still present when either the right or left eye is covered (monocular or binocular diplopia). 3. Monocular diplopia is most always optical in nature. Binocular diplopia is caused by either aniseikonia (a difference in the relative sizes of the retinal images perceived by the patient) or, more commonly, misalignment of the visual axes.

Diagnosis, Differential↗
PubMed2003

Strabological findings after macular translocation surgery with 360 degrees retinotomy.

PURPOSE: To examine the strabological findings after macular translocation surgery with a 360 degrees retinotomy. METHODS: Thirty-two patients who underwent macular translocation surgery were divided into three groups based on their responses to the Bagolini striated lenses test: fusion, ignoring the image, and diplopia. The relevant factors affecting binocularity were compared among the three groups. RESULTS: Five patients had peripheral fusion and three of these had gross stereopsis. Fifteen patients ignored the second image, and 12 patients had diplopia. The objective angle of macular rotation was smaller in the patients with peripheral fusion (15.0 +/- 6.1 degrees) than in those with diplopia (32.7 +/- 11.7 degrees). The subjective angle of cyclotorsion in those with peripheral fusion (6.0 +/- 4.2 degrees) was smaller than in those who ignored the image ("ignoring" group; 20.5 +/- 9.19 degrees) and the diplopia group (30.7 +/- 12.8 degrees). The amount of torsional sensory compensation in patients with diplopia (2.08 +/- 3.83 degrees) was significantly smaller than in those with peripheral fusion (9.00 +/- 7.42 degrees) and in the ignoring group (6.73 +/- 3.86 degrees). Patients with peripheral fusion were significantly younger (54.2 +/- 14.3 years) than those in the ignoring group (67.7 +/- 10.0 years) and those with diplopia (68.0 +/- 5.4 years). CONCLUSIONS: Adaptive mechanisms are activated to reduce the surgically induced objective angle of cyclotorsion, and a cyclodeviation of 15 degrees was the critical angle separating those who had peripheral fusion from those who did not. This value corresponds to the cyclofusional amplitude in normal adults.

Activities of Daily Living↗
PubMed2003

[A comparison of early and late reconstruction and repositioning of orbital blow-out fracture].

OBJECTIVE: To study and compare the operative results of the early and late treatment of orbital blow-out fracture. METHODS: Orbital blow-out fractures were reconstructed and repositioned. Three dimensional measurements, CT scanning, diplopia analysis, Medpor filling of the orbit were used for the operation and the study. The operative results were compared between 15 cases of early and 16 cases of late reconstruction of blow-out fracture. RESULTS: In the early treatment group, there were 8 cases of diplopia, 15 cases of orbital invagination and 10 cases of disesthesia of the infraorbital nerve. After surgery, diplopia was corrected in 7 cases; invagination was corrected in all the 15 cases; disesthesia of the infraorbital nerve was corrected in 8 cases. In the late treatment group, there were 10 cases of diplopia, 16 cases of orbital invagination and 9 cases of disesthesia of the infraorbital nerve. After surgery, diplopia was corrected in 3 cases, unimproved in 4 cases, aggravated in 2 cases. 5 of them received reoperation of extraocular muscle for diplopia. Orbital invagination was uncorrected in 3 cases. 2 of them were re-operated on. Disesthesia of the infraorbital nerve was unimproved in 2 cases. By comparing the operation results, of the two groups using FISHER accuracy inspection, the significant difference was only in the correction of the double visions (chi 2 = 4.865, P < 0.05). CONCLUSION: Early operation for orbital blow-out fracture is easier, with better results, fewer complications and reoperations than the late operation.

Adolescent↗
PubMed1997

Exotropia secondary to vitreous hemorrhage.

BACKGROUND: Diplopia after cataract surgery has been reported by several authors, but diplopia after recovery from vitreous hemorrhage (VH) has not been described. METHODS: We examined eight patients with manifest exotropia and binocular diplopia after recovery from dense VH by vitreous surgery. VH was bilateral in three patients and unilateral in five, and lasted for an average of 7.7 years. RESULTS: Visual acuity before vitrectomy ranged from 20/200 to light perception; that after vitrectomy ranged from 20/20 to 20/60. Exotropia was present in all patients after vitrectomy. Additionally, seven out of eight patients had vertical strabismus with an average deviation of 6 prism diopters (delta). Fusion was confirmed in four patients with an average amplitude of 13 delta. Four patients underwent horizontal strabismus surgery. Fusion was present in two before strabismus surgery and in all four after surgery; however, unstable diplopia persisted in three of the four after surgery. CONCLUSION: Diplopia after vitrectomy for longstanding VH may occur due to fusion impairment comparable to that occasionally seen after surgery for traumatic cataract.

Adolescent↗
PubMed1987

The incidence of extraocular muscle and cranial nerve palsy in orbital floor blow-out fractures.

The frequency of extraocular muscle (EOM) or cranial nerve (CN) palsy as the sole cause of diplopia in orbital floor blow-out fractures has not been previously determined. Of 40 blow-out fracture patients studied prospectively, seven had motility disturbances consistent with palsy of one EOM or CN. All seven patients had negative forced ductions, making entrapment, edema, or orbital hemorrhage unlikely causes of diplopia. The diplopia resolved in four patients in 1 year. Persistent diplopia is a common indication for repair of such fractures. If, however, diplopia is due only to EOM or CN palsy, orbital surgery should be deferred (in the absence of significant enophthalmos) in favor of observation and/or later strabismus surgery.

Adolescent↗
PubMed2000

Ophthalmic involvement in cranio-facial trauma.

OBJECTIVES: This is a retrospective descriptive case study which will look into the spectrum of ophthalmic involvement in cases with orbital and eye injuries after cranio-facial trauma and to analyse the visual and motility outcome. MATERIAL: One hundred and four cases with ophthalmic involvement after cranio-facial trauma that were referred to and seen in the eye department of a tertiary teaching hospital in Singapore between 1991-97 were included in the study. METHODS: The case records of 104 such patients were traced. The demographic data, the mode of injury, the type of fracture sustained and presence of serious eye injury were noted. The details about visual acuity, significant diplopia and enophthalmos at the first and last visits were charted. Presence of traumatic optic neuropathy including the type of treatment given was recorded. RESULTS: There was a male preponderance (82%). The industrial accidents were 21%, only next to road traffic accidents, which constituted approximately 36.5%. The predominant types of fractures seen were blow-out orbital fractures, complex fractures comprising of Le-Fort II, III, panfacial and fronto-basilar skull fractures. Diplopia was the most common presenting feature (40%) with visual acuity disturbance (23% having <6/60) as the next most common finding. Traumatic optic neuropathy was seen in 20% of patients and serious eye injury was present in 9% of patients. The incidence of traumatic optic neuropathy was significantly higher (p<0.001) in patients with complex fractures and fronto-basilar fractures, as compared to the blow-out and zygomatico-maxillary fractures. Analysis of final results indicated 15% as having significant diplopia in one or more gazes and 12.5% as having a vision of <6/60. CONCLUSION: Diplopia and visual acuity disturbances seem to be the most common ophthalmic presentations in cranio-facial trauma. A significant number of patients suffer from poor vision and significant diplopia despite treatment.

Accidents, Occupational↗
PubMed2003

Medial and lateral orbital wall surgery for balanced decompression in thyroid eye disease.

OBJECTIVES/HYPOTHESIS: Diplopia remains a major potential complication of orbital decompression performed for thyroid eye disease. We sought to examine the effect of medial and lateral wall surgery with sparing of the orbital floor on the incidence of postoperative diplopia. STUDY DESIGN: Retrospective review. METHODS: A retrospective review was made of 63 consecutive medial and lateral orbital wall surgeries (40 patients) performed between December 1996 and May 2002 for orbital decompression of thyroid eye disease. RESULTS: The average patient age was 50.9 years of age (age range, 14-83 y). The studied group was predominantly female (sex ratio, 36:4). Indications were compressive optic neuropathy (34), exposure keratopathy (25), and aesthetic concerns (4). The mean time since surgery was 31.5 months (range, 3-69 mo). The medial wall was approached by a transcaruncular (59) or endoscopic (4) technique. Two patients had fat removal. The average improvement in exophthalmos was 4.1 mm (range, 0-10 mm). The average palpebral fissure improvement was 2.0 mm (range, 0-7 mm). Two patients had cerebrospinal fluid leaks during excavation of the sphenoid bone. These were diagnosed and repaired primarily without complication. New-onset diplopia occurred in four patients. Two of these patients required strabismus surgery. CONCLUSION: A 10% new-onset diplopia rate compares favorably with other surgical series. Medial and lateral wall surgery only, sparing the floor, may reduce diplopia after surgery for orbital decompression in thyroid eye disease.

Adolescent↗
PubMed2003

Balanced orbital decompression combined with fat removal in Graves ophthalmopathy: do we really need to remove the third wall?

PURPOSE: To compare the reduction of proptosis and the incidence of new-onset diplopia after 3-wall (medial, lateral, and inferior) orbital decompression versus balanced medial and lateral wall decompression combined with orbital fat excision in patients with Graves ophthalmopathy. METHODS: Three-wall orbital decompression including medial, inferior, and lateral walls was performed in 13 eyes of 7 patients (group 1), and balanced medial and lateral wall decompression combined with fat removal was performed in 18 eyes of 11 patients (group 2). A transnasal endoscopic approach was used for medial wall removal. A lateral canthotomy incision combined with a short upper eyelid incision was used for extended lateral wall removal, and this was combined with an inferior conjunctival fornix incision when floor decompression was performed. RESULTS: The mean reduction of proptosis was 6.9+/-1.6 mm and 6.5+/-1.3 mm in the first and second groups, respectively; the difference was not statistically significant (P=0.37). After 3-wall decompression, 57.1% of the patients had permanent new-onset diplopia (group 1), whereas none of the patients had permanent postoperative diplopia after balanced medial and lateral wall decompression combined with fat removal (group 2). The difference in permanent new-onset postoperative diplopia between two groups was statistically significant (P<0.001). CONCLUSIONS: Balanced medial and lateral wall decompression combined with orbital fat removal provides an effective reduction in proptosis and reduces the incidence of postoperative permanent diplopia when compared with 3-wall decompression. This technique may eliminate the need for orbital floor excision.

Adipose Tissue↗
PubMed1996

One stage vertical rectus muscle recession using adjustable sutures under local anaesthesia.

AIMS: To assess the results of visual axis alignment following one stage adjustable suture surgery to correct vertical diplopia. METHOD: Eight patients with a mean age of 44.9 years (range 16-80 years) complaining of vertical diplopia underwent rectus muscle recession under local anaesthesia with intraoperative adjustment of sutures. Diplopia was secondary to superior oblique paresis in four patients, dysthyroid eye disease in two patients, superior rectus paresis in one patient, and one developed a consecutive deviation after previous squint surgery. The surgery consisted of seven single muscle recessions (six inferior recti and one superior rectus) and one two muscle recession (inferior and lateral recti). The surgery was performed under topical anaesthesia supplemented with a subconjunctival injection of local anaesthetic over the muscle insertions. RESULTS: The patients remained comfortable throughout their surgery. All had a reduction in their vertical deviation. Six were asymptomatic and were eventually discharged. One had residual diplopia which was well tolerated without further intervention. One had persistent troublesome diplopia which was corrected by temporary Fresnel prisms. He became asymptomatic after further surgery of a 1 mm inferior rectus advancement. CONCLUSION: One stage adjustable suture surgery is recommended in all cases of strabismus surgery when postoperative results would otherwise be unpredictable.

Adolescent↗
PubMed2000

Transconjunctival orbital decompression in Graves' ophthalmopathy: lateral wall approach ab interno.

AIMS: A modified surgical technique is described to perform a one, two, or three wall orbital decompression in patients with Graves' ophthalmopathy. METHODS: The lateral wall was approached ab interno through a "swinging eyelid" approach (lateral canthotomy and lower fornix incision) and an extended periosteum incision along the inferior and lateral orbital margin. In addition, the orbital floor and medial wall were removed when indicated. To minimise the incidence of iatrogenic diplopia, the lateral and medial walls were used as the first surfaces of decompression, leaving the "medial orbital strut" intact. During 1998, this technique was used in a consecutive series of 19 patients (35 orbits) with compressive optic neuropathy (six patients), severe exposure keratopathy (one patient), or disfiguring/congestive Graves' ophthalmopathy (12 patients). RESULTS: The preoperative Hertel value (35 eyes) was on average 25 mm (range 19-31 mm). The mean proptosis reduction at 2 months after surgery was 5.5 mm (range 3-7 mm). Of the total group of 19 patients, iatrogenic diplopia occurred in two (12.5%) of 16 patients who had no preoperative diplopia or only when tired. The three other patients with continuous preoperative diplopia showed no improvement of double vision after orbital decompression, even when the ocular motility (ductions) had improved. In the total group, there was no significant change of ductions in any direction at 2 months after surgery. All six patients with recent onset compressive optic neuropathy showed improvement of visual acuity after surgery. No visual deterioration related to surgery was observed in this study. A high satisfaction score (mean 8.2 on a scale of 1 to 10) was noted following the operation. CONCLUSION: This versatile procedure is safe and efficacious, patient and cost friendly. Advantages are the low incidence of induced diplopia and periorbital hypaesthesia, the hidden and small incision, the minimal surgical trauma to the temporalis muscle, and fast patient recovery. The main disadvantage is the limited exposure of the posterior medial and lateral wall.

Adult↗
PubMedDate not supplied

PVEP evidence of true suppression in adult onset strabismus.

Customarily, it is taught that strabismus acquired in childhood results in suppression of the diplopic image, whereas strabismus acquired in adulthood causes diplopia or conscious image ignoring, but not true cortical suppression. The pattern visual evoked potential (PVEP) was recorded from strabismic patients, three with childhood onset, two adult onset with diplopia, and three with longstanding adult onset strabismus "ignored" diplopia. Patients with childhood onset and adult onset "ignored" diplopia similarly showed essentially no response under haploscopic stimulation, whereas patients with diplopia and normal control subjects showed a 50% decrease (rivalry). These results suggest that adults with acquired strabismus who "ignore" the diplopic image actually have a suppressed cortical visual activity, as evidenced by the pattern visual evoked potential.

Adolescent↗
PubMed1999

Fresnel membrane prisms: clinical experience.

BACKGROUND: There are few published reports on the clinical application of Fresnel membrane prisms in the treatment of diplopia in adults. The authors describe the use of these prisms in patients with fourth and sixth cranial nerve palsies, restrictive motility caused by thyroid-related orbital disease, and convergence insufficiency. METHODS: Of 209 patients who had been treated with Fresnel prisms, 141 were selected. The database included patients from a private practice in Montreal, seen from 1988 to 1996, and patients seen by orthoptists in the ophthalmology department of a children's hospital in Montreal between 1992 and 1996. All the patients had diplopia associated with fourth (48 patients) or sixth (43 patients) cranial nerve palsy, thyroid-related orbitopathy (18 patients) or convergence insufficiency (32 patients). After qualitative and quantitative assessment of the ocular misalignment, a Fresnel prism was selected for power and axis and for appropriate location on the spectacle lens. Ocular dominance and side of paresis or restriction were also considered in the placement of the prism. The patient's response to treatment was documented. RESULTS: The Fresnel prisms were oriented horizontally in 72 patients (51%), vertically in 55 (39%) and obliquely in 14 (10%). They were placed on the spectacle lens before the nondominant eye in 127 cases (90%), either covering the entire lens, or on the upper or lower segment or both. The patients were followed for an average of 15 (range 2 to 96) months. Of the 141 patients 113 (80%) had a successful outcome, with relief of their diplopia. Twenty-seven patients (19%) eventually had the prismatic correction ground into the lens, 70 (50%) chose to wear the Fresnel prism on a permanent basis because incorporation into the lens was not possible or because of cost, and 17 (12%) used the Fresnel prism as a temporary device before or after surgery. Most patients who converted to incorporated prisms did so when the prismatic power became stable, usually after 6 to 8 months. Eight patients (6%) stopped using the prism because of associated side effects, such as blurred vision, persistent diplopia, torsion or optical aberrations. INTERPRETATION: The Fresnel prism is an excellent device in treating diplopia in adult patients. It is a reasonable permanent option when incorporating the prism into the spectacle lens is not possible. A fused blurred image caused by a Fresnel prism placed in front of the nondominant eye is preferable to double but clear images.

Abducens Nerve Diseases↗
PubMed2006

Chiari 1 malformation presenting as strabismus.

INTRODUCTION: Strabismus has been previously reported as a rare presenting feature of the Type 1 Chiari malformation. CASE REPORTS: We report a case series of twelve patients with Chiari 1 malformations with either strabismus or diplopia as part of their initial presentation. Ten patients had diplopia at the time of presentation, while 2 young children (ages 2 and 6) presented with esotropia without complaints of diplopia. Of the 10 patients with diplopia, 7 were constantly or frequently tropic while 3 had symptomatic phorias. One or more unusual features of the strabismus led to further investigations and the diagnosis of Chiari in these patients. The most common oculomotor disturbance was a comitant esotropia. Most patients were managed with prism glasses. One patient had strabismus surgery as primary treatment with early orthotropia. Three patients underwent neurosurgical decompression, with minimal improvement of their strabismus; one of these underwent subsequent successful strabismus surgery. CONCLUSIONS: Chiari 1 malformation may present with strabismus or diplopia as the major finding. Associated neurological features may be nonspecific (e.g., headache), subtle (e.g., gaze-evoked nystagmus), or delayed. Although neurosurgery may be required in some cases, primary strabismus management (surgical or prismatic correction) can be successful, particularly when strabismus is the lone (or sole specific) finding.

Adolescent↗
PubMed1996

Horror fusionis: a report of five patients.

BACKGROUND: Horror fusionis is an uncommon anomaly and is rarely reported in the literature. METHODS: Five adults with long-standing diplopia associated with horror fusionis were examined. RESULTS: All patients had strabismus since early childhood and had been treated at that time either with surgery, occlusion, and/or orthoptics/vision therapy. Prisms could not eliminate the diplopia. Graded occlusion was attempted with one patient but was not tolerated. Another patient with an asymmetrical dissociated vertical deviation could ignore the second image by fixating with the eye with the smaller deviation. Two patients reported the diplopia becoming less noticeable over the years. CONCLUSIONS: Because of its poor prognosis, the diplopia associated with horror fusionis must be differentiated from other types of diplopia occurring in adults with childhood onset strabismus.

Adult↗
PubMed1996

Beneficial effects of corticosteroids on ocular myasthenia gravis.

OBJECTIVE: To determine if moderate-or low-dose corticosteroid therapy can reduce the diplopia and frequency of deterioration to generalized disease in ocular myasthenia gravis. DESIGN: Retrospective record review. SETTING: Two university-based neuro-ophthalmology services. PATIENTS: All 32 patients with ocular myasthenia gravis, treated with prednisone, followed up for a minimum of 2 years were included. Patients were treated with 1 or more courses of daily prednisone (highest initial dose, 40-80 mg) gradually withdrawn over 4 to 6 weeks. Subsequently, in 6 patients, 2.5 to 20 mg of prednisone was given on alternate day. OUTCOME MEASURES: Diplopia in the primary position or downgaze diplopia and generalized myasthenia gravis after 2 years of follow-up. RESULTS: Diplopia, which was initially found in the primary position in 29 patients and in the downgaze position in 26 patients, was absent in 21 patients at 2 years. Generalized myasthenia gravis occurred in 3 patients at 2 years. Elevated serum acetylcholine receptor antibody levels and abnormal electromyography findings were not predictive of worsening. No patient experienced a major steroid complication. CONCLUSIONS: Moderate-dose daily prednisone for 4 to 6 weeks, followed by low-dose alternate-day therapy as needed, can control the diplopia in patients with ocular myasthenia gravis. The frequency of deterioration to generalized myasthenia gravis at 2 years may be reduced; 9.4% in this study compared with more than 40% previously reported frequency. Corticosteroids may be useful even when ocular motor dysfunction is not normalized.

Adrenal Cortex Hormones↗