e30 Volume 14 Number 1 / February 2010

following PPC. The incidence of PCO and SM formation is similar re-gardless of IOL type. However, the average time of onset to the de-velopment of PCO is slightly longer in the MA60AC group. Therecurrence of PCO after Yag capsulotomy is low. Given these results,parents can be better informed regarding the incidence of visual axisopacification depending IOL design that has been placed.

115 Characteristics of retinal hemorrhages in preterm infantsscreened for retinopathy of prematurity by the Retcam II-A pilotstudy. Patrick Watts, Raina Goyal, Devina Gogi, Robert Taylor,Hasan Al MadfaiPurpose: To report the incidence and characteristics of retinal hem-orrhages in preterm infants screened for retinopathy of prematurityby Retcam.Methods:Infants screened consecutively by Retcam over a period of3 months were included in the study. Retinal hemorrhages observedwere graded based on their characteristics. In addition the gesta-tional age, the post conceptional age, the birth weight, the zoneand stage of retinopathy, ethnic origin and type of birth were re-corded.Results: There were 68 examinations in 36 infants over this period.Dot-like intraretinal hemorrhages scattered in the posterior polewere classified as type 1 were seen in 56% of infants. Superficial ret-inal haemorrhages commonly seen in newborn infants were classi-fied as type 2 were present in 6% of infants. Type 1 hemorrhagesare not easily seen with indirect ophthalmoscope and hence beennot reported in the past. There was no statistically significant corre-lation of the haemorrhages with birth weight (p 5 0.62) gestationalage (p 5 0.38) , post-conceptional age (p 5 0.08) or type of birth(p 5 0.33). There was no correlation between hemorrhages andseverity of ROP.Conclusions: The presence of type 1 dot retinal hemorrhages has notbeen previously reported in literature. With increasing use of the re-tcam to document retinal haemorrhages in infants, it is important torecognise that these haemorrhages are frequently seen compared toretinal hemorrhages described in the newborn.

116 Local and global motion processing in premature childrenwith cerebral visual impairment (CVI). Joel M. Weinstein, Rick O.Gilmore, Sumera Shaikh, Jeremy Fesi, Tashima Lauren, AlbertCheungIntroduction: The purpose of this study was to determine the inci-dence of impaired local and global motion processing in infantswith cerebral visual impairment due to either periventricular leuko-malacia or hydrocephalus.Methods: Motion processing was evaluated objectively using steadystate visual evoked potentials (SSVEP) in 14 children ages 6-14 with rel-atively mild CVI due to either PVL (12 patients) or hydrocephalus (2 pa-tients). Random dot stimuli moving in either ''Brownian motion'' orsynchronous circular motion were used to assess local motion andglobal motion processing, respectively. Control groups consisted of: (1)14 age matched visually and neurologically normal subjects and (2) 14neurologically normal subjects with mild strabismus and/or amblyopia .Results: At the most difficult to detect slower target speeds, globalmotion processing was impaired in 79% of patients with CVI, 43%of neurologically normal children with mild strabismus/amblyopia,and 14% of normal children. For global motion processing, normalsubjects responded more strongly to slower (more difficult to detect)targets, while CVI and strabismus/amblyopia subjects showed theopposite trend, requiring faster targets (easier to detect) to producean increased VEP response (p \ 0.01) .

Conclusions: These findings suggest that children with CVI haveimpaired higher cortical processing of movement not accountedfor by coexisting strabismus/amblyopia or local motion processingdefects. SSVEP may be used to objectively detect and quantitatedefects of higher cortical function in children with CVI. In addition,our results support a growing body of data demonstrating defectsof higher visual cortical processing in patients with strabismus/amblyopia.

117 A demonstration of the Medisoft strabismus electronicpatient record. Stephanie K. West, Suzanne Turner, CatherineBillington, Rob L. Johnston, John D. FerrisIntroduction: Medisoft software is already established as a widelyused Electronic Patient Record (EPR) in the UK, which has beenused to produce and audit the Cataract national dataset. In February2009 its strabismus module was launched. This is the first fully inte-grated EPR for oculomotility patients. We would like to illustrate itsease of use by looking at orthoptic, medical and operative data entry.Method: The software was designed by Ophthalmologists and Or-thoptists to present data in the British and Irish Orthoptic Society(BIOS) format with dropdown menus and diagrammatic annotations.Theater data entry is designed to input surgical numbers, aims of sur-gery, and any intraoperative complications.Results We will demonstrate clinical and surgical data entry for thefollowing conditions: intermittent exotropia (true divergence excess)treated with bilateral lateral rectus recessions and hypotropia in thy-roid eye disease, treated with bilateral vertical rectus adjustable sur-gery, including documentation of postoperative adjustment.Discussion: This demonstration illustrates (1) ease of clinical andsurgical data entry and the use of prefilled surgical fields; (2) Theability to achieve 100% data capture and to tailor this to specific con-ditions; (3) automatic production of clinic notes, GP letters, surgicalnotes and postoperative prescriptions; and (4) the audit facility incor-porated in the EPR (see intermittent exotropia audit abstract).Conclusions: This demonstrates the first fully integrated EPR for ocu-lomotility patients.

118 Ophthalmic manifestations of tetrasomy 18p: A series of 25patients. William A. White, Martha P. Schatz, Jannine D. Cody,Courtney SeboldBackground: Tetrasomy 18p is a rare chromosomal anomaly withsystemic and ophthalmic manifestations. This condition has beenpreviously associated with strabismus.Methods: Twenty-five subjects were referred to our service for oph-thalmologic examination following diagnosis of tetrasomy 18p. All sub-jects underwent a complete eye exam to screen for ocular pathology.Results: The average age of subjects was 8.2 years. Twelve subjectswere male, 13 were female. Nineteen subjects showed evidence ofstrabismus, with 17 subjects demonstrating esotropia (7 accommo-dative, 5 infantile, 2 acquired non-accommodative, 2 intermittent, 1A pattern), one subject displaying an esophoria, and one subject di-agnosed with intermittent exotropia.Conclusions: The authors present the first comprehensive descrip-tion of ophthalmic findings in a large series of patients with tetrasomy18p. The common coincidence of esotropia with tetrasomy 18p indi-cates a need to routinely screen these patients for eye movementdisorders at the time of diagnosis. The high prevalence of esotropiain our population suggests the possibility that one or more genes onthe short arm of chromosome 18 may play a role in the developmentof esotropic strabismus.

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