1977
DOI: 10.1001/archopht.1977.04450050086008
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The Conjunctival Sickling Sign, Hemoglobin S, and Irreversibly Sickled Erythrocytes

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1978
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Cited by 22 publications
(15 citation statements)
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“…8,9 Furthermore, there have been associations between HbS percentage and disease severity in other reported complications of SCD. 23 The optimal target hematocrit and HbS percentage are debated, however, as frequent blood transfusions are not without risk. In addition to the common transfusion risks experienced by the general population, SCD patients are particularly prone to RBC alloimmunization because of disparate expression of RBC antigens, compared to the mostly Caucasian blood donor pool.…”
Section: Discussionmentioning
confidence: 99%
“…8,9 Furthermore, there have been associations between HbS percentage and disease severity in other reported complications of SCD. 23 The optimal target hematocrit and HbS percentage are debated, however, as frequent blood transfusions are not without risk. In addition to the common transfusion risks experienced by the general population, SCD patients are particularly prone to RBC alloimmunization because of disparate expression of RBC antigens, compared to the mostly Caucasian blood donor pool.…”
Section: Discussionmentioning
confidence: 99%
“…A significant correlation between severity of conjunctival vessel changes and counts of irreversibly sickled cells (ISC) has been reported for sickle cell diseases (Serjeant et al 1972;Nagpal et al 1977), but this parallelism is rather complex and it Grade of conjunctival vessel lesion for HbS homozygotes classified according to the criteria of Serjeant et al (1972) as compared with patient age.…”
Section: Discussionmentioning
confidence: 99%
“…Different types of retinal lesions may occur, which may cause transient or permanent visual loss (Goodman et al 1957;Lieb et al 1959;Serjeant 1985;Roy et al 1987;Bonanomi et al 1988). The conjunctival vessels are also affected by the disease and a specific conjunctival vascular pattern has been described in sickle disease (Goodman et al 1957;Lieb et al 1959;Geeraets & Guerry 1960;Munro & Walker 1960;Fink et al 1961Fink et al ,1964Paton 1961Paton , 1962Comer & Fred 1964;Serjeant et al 1972;Nagpal et al 1977). Although of little hnctional significance, these vascular abnormalities are of considerable interest since they allow the direct observation of the effects of sickling and other blood alterations upon small vessels (Knisely et al 1947;Fink et al 1964).…”
mentioning
confidence: 99%
“…Por exemplo, a microvasculatura da conjuntiva apresenta, com freqüência, áreas de vaso-oclusão. Em 1961, Paton 7 caracterizou estas alterações vasculares, muito encontradas em indivíduos SS, 8 como sendo segmentos capilares múltiplos, em forma de vír-gula ou espiral, separados da rede vascular da conjuntiva. O tecido afetado (conjuntiva) não é dependente de altos níveis de oxigênio, sobrevive bem, e o paciente, então, não apresenta sintomas visuais.…”
Section: Introductionunclassified