Pediatric cataracts are one of the common causes of childhood blindness and are responsible for approximately 10% to 20% of blindness in children worldwide. Cataract is an opacity in the lens which can block or scatter light. Material and Methods: A total of 46 eyes of 28 patients in the age range from 3 months to 25 years withIntroduction. 5. The rise of artificial intelligence (AI) has brought breakthroughs in many areas of [email protected]. 2017;11:1423-1430. According to WHO cataract is the leading cause of preventable blindness. Radiation. These recommendations are based on the National Institute for Health and Care Excellence (NICE) guideline Cataracts in adults: management [], the American Association of Ophthalmology (AAO) guidelines Cataract in the adult eye preferred practice pattern [] and Comprehensive adult medical eye evaluation preferred practice pattern guidelines [], the. The article also provides the full text of the LOCS III protocol and the standard photographs for nuclear color, nuclear opalescence, cortical, and posterior. Guidance. 1996, Quality in Health. Clin Ophthalmol. Cataract surgery is a type of eye surgery to remove a cataract (cloudy lens) and improve your vision. The morphology of a classic traumatic. 74 to 1. It further aims to improve the availability of information for people with cataracts before, during and after. A key finding was that during a typical cataract theatre list there was enough time to increase the number of cases by two or three if the surgeon’s time could be optimized and the. There are 2 options for managing cataracts: medical management or surgical removal. The aim of this review was to discuss frequently encountered themes such as cataract surgery in presence of age-related macular degeneration (AMD), dementia, Immediate Sequential Bilateral Cataract Surgery (ISBCS), discussing non-standard intraocular lens (IOL) options during consultation in the National Health Services (NHS) and the choice of. With regular eye exams, our Calgary optometrists can continually monitor cataract progression, keeping you informed of your eye health. 7%) were Grade 0, 129 (43%) Grade 1, 127 (42. Diagnosis is made by the detection of a decrease in visual acuity that cannot be corrected by refractive correction, and an eye exam that is otherwise normal apart from opacity in the crystalline lens. In addition, attempts for qualitative and quantitative assessment of OCT images of cataract eyes have been presented but the studies were usually confined to the analysis of single cross-sectional images [34–37]. 1500 W. Results. 1 Physician Performance Measures (Measures) and related data specifications, developed by the American Medical Association. There are four different types of cataracts, and each has its own cause. Given that the most common pathogens causing. txt) or read book online for free. The current methods to remove a cataract are now very reliable with great reproducibility. Cataracts are a leading cause of blindness in the world. Hard cataracts make preoperative assessment of intraocular structures difficult, and operating on them is an even greater challenge. Cataracts in adults: management. With the development. National Institute for Health and Care Excellence:. Assessment and management of patients with cataract EHEW accredited optometrists can utilise the EHEW service to assess a patient with cataract via the Further Investigation Examination (EHEW Band 2) following a GOS or private sight test. Several questionnaires have been developed to measure quality-of-life outcomes in patients with cataracts. Small cataracts stand out as dark defects in the red reflex. Give people with cataracts, and their family members or carers (as appropriate), both oral and written information. The aim of our work was to study the contribution of mode B ultrasound in the diagnostic and therapeutic management of cataracts in the radiology department of the medical clinic Marie Curie in Bamako. 19 Bradfield et al. Shop Now. Comprehensive Eye Exams; What To Expect From An Eye Exam. Repeat treatments might be needed. Using that threshold, sensitivity and specificity to detect cataract were 94. Your eye doctor will let you know how best to deal with your cataracts, whether it be careful management or surgery. 20 Crowfoot Crescent NW #750, Calgary, AB T3G 2P6, Canada: OPENING TIMES: Monday: 10am–6pm. 6/10,000 per year, and the median prevalence is about 1. G. Accurate and timely diagnosis can improve the quality of. Cataracts are a common and frequently curable cause of blindness in children. Start 2/3 lateral along the inferior orbital rim (inferior to the temporal limbus) with the needle tip pointing perpendicular to the plane of the patient’s face. 4%–15. If left untreated, cataracts worsen over time and interfere with everyday activities such as reading or driving. Short title. Cataracts are a common and frequently curable cause of blindness in children. Three drugs are approved by the U. It is the most common cause of blindness worldwide. Ethnicity: Black Americans are more likely to develop cataracts and to have a visual impairment. Faced with a potential 50% increase in cataract surgery workload per week in the post-COVID-19 world, eye units should use this event to. 6 ). This proliferative opaque membrane causes decreased visual acuity, blurred vision, or glare. On visual inspection, the lens appears gray or milky. At first, you may not notice that you have a cataract. toggle navigation. 1. Drag and drop the diagnostic test that would provide direct visualization of Fred's eye. About Us. Pediatric cataract assessment. Document authors: Jonathan Bhargava, Consultant Ophthalmologist, Countess of Chester Hospital. Cataract diagnoses and surgeries, though not type of cataract, were successfully identified using electronic algorithms. Optical coherence tomography [17] and the5. Crowfoot West Springs Creekside. 1 – 3 Pediatric cataracts may be congenital if present within the first year of life, developmental if present after infancy, or traumatic. About Us. 7 percent in North America to 42 percent in Southeast Asia [ 1 ]. COVID-19 pandemic of 2020 has impacted all aspects of clinical practice in the UK. Detection and management of OSD in all patients before any cataract/refractive surgery is critical, as the health of the tear film can have significant effects on postoperative visual outcomes. The size of the nucleus and grade of the sclerosis must be assessed to decide on the incision and type of. Qual Health Care. Slit-lamp exam. For example, only a single study If less than 60% criteria in the quality assessment tool were met, quality was scored as weak; it was scored moderate if 60-79% were met and strong if 80-100% were. Using the slit lamp, an ophthalmoscope or both, the doctor looks for signs of cataract. Senile cataract is a vision-impairing disease characterized by gradual, progressive thickening of the lens. For example, CPGs 1 and 4 indicate that immediate sequential bilateral cataract surgery (ISBCS) (i. Abstract. Without cataract surgery, millions of people around the world would be unable to see clearly. Give people with cataracts, and their family members or carers (as appropriate), both oral and written information. Gain the knowledge and skills you need to succeed in medical-surgical nursing with this leading textbook! Lewis's Medical-Surgical Nursing, 12th Edition uses a conversational writing style, a focus on nursing concepts and clinical trends, evidence-based content, and basic pathophysiology review to provide the solid foundation needed in a. Abstract. Regarding the attitude, more than one-third, 205 (35. Treatment is with surgery involving an incision into the eye and removal. Cataract removal is one of the most common operations performed in the United States. In ophthalmology, AI has delivered robust results in the screening and detection of diabetic retinopathy, age-related macular degeneration, glaucoma, and retinopathy of prematurity. In many cases, removing the cloudy lens can lead to a. People with cataracts may find they require brighter lights to read. 1016/j. The Centers for Medicare and Medicaid Services (CMS) Data Compendium ranks cataract code 66984 (extracapsular cataract extraction with insertion of intraocular lens) as the single largest expenditure for all Part B procedures with costs estimated at over $2 billion annually, accounting for 1. 1 shows the forest plot that includes the proportions with 95% confidence interval found in the studies. Epidemiology and risk factors for cataract. 4022 | Fax: 208. A cataract is a painless clouding of the eye's natural lens that is caused by a buildup of protein. (Strong recommendation. With population ageing, thisAssessment Level of Awareness… 2102 Table (4): Knowledge of subjects about steroid cataract: Correct Incorrect 1- Cataract is a disease of the eye 735 (80. 0 (±0. Our Crowfoot, West Springs & Creekside eye doctors can help you with glasses for your specific needs. Currently, the only effective treatment of cataract is surgical removal with, in most cases, insertion of an intraocular. 67) when compared to selective or no testing (2 studies; 2281 cataract surgeries; moderate‐certainty evidence). If a cataract is found then this should be discussed with the patient. A fourth drug, bevacizumab (Avastin), can be used off-label for the treatment of diabetic macular edema. Cataracts are most common in people over 50, but cataract assessment typically begins before this age. 2. 1. All; Cataracts; Children's Eye Health; Computer Vision Syndrome; Contact Lenses; Digital Eye Strain;Introduction. About Us. The optic cup is the central depression, and the optic disk is the entire area of the optic nerve head. These include Activities of Daily Vision Scale, Visual Disability Assessment, and VF-14. , Boise, Idaho 83702 Office: 208. 1. Traumatic Cataract. By using probability density features and multiclass classifiers, the accuracy of cataract hardness assessment achieves 95% when using a small training set. In about 90 percent of cases, people who have cataract surgery have better vision afterward. 2. When eye fluid can’t drain properly, it puts pressure on the optic nerve. Glaucoma is the result of the buildup of fluid inside your eye. Cataract surgery has become a combined rehabilitative and refractive procedure, and patient expectations for an excellent postoperative final uncorrected distance visual acuity are increasing. Cataracts are the leading cause of blindness worldwide. Optical coherence tomography (OCT) is a safe, rapid, noninvasive, and reproducible imaging modality used for structural evaluations of maculae. 10. 41 With the development of cataract grading systems, clinicians can better assess. The drops can cause your close vision to blur until they wear off, several hours later. The results are presented in Table 2. The rates of perioperative morbidity and mortality associated with cataract surgery are low. Meta-analysis. Bernadette Osiowy: WEBSITE: TELEPHONE +1 403-256-0606: FAX: 403-254-2800: ADDRESS: 190-23 Sunpark Dr, Sundance Calgary SE. Symptoms, Causes, Diagnosis, Treatment, and Prevention. To evaluate visual acuity (VA) and refractive status in patients with cataract and irregular astigmatism with a regular central component after phacoemulsification with implantation of a toric. 7 percent in North America to 42 percent in Southeast Asia [ 1 ]. 5%) used their skills to diagnose cataract based on reduced visual acuity and funduscopy examination results. The Department of Health in England has asked NICE ‘to develop a clinical guideline on Cataracts: diagnosis and management of cataracts’ and to consider issues surrounding ‘indications for cataract extraction’ and ‘wrong lens implant errors’. MLS #2168760. In addition, thanks to the development of methods for cataract detection and grading using different imaging modalities, ophthalmologists can make diagnoses with significant. It also includes recommendations for service delivery and patient information. The three most common types are traumatic, congenital, or senile cataract. v. 1. A pre-existing DED affecting the. To better describe the pipeline of using CRISPR-Cas9 RNP to evaluate cataract genes in F0 zebrafish, we use HTR1F (5-hydroxytryptamine receptor 1F) as an example cataract candidate gene to illustrate the methods applied in this article. 2013. Outstanding vision care across Calgary. Symptoms of cataracts include: Clouded, blurred or dim vision. This study was aimed to quantitatively assess objective forward scattering and its relevant factors in eyes having cataract. Patient-reported outcome is an important part of the evaluation of a surgical procedure. A systematic review of the different applications of AI-based software on all aspects of a cataract patient's management, from diagnosis to follow-up, was carried out in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. National Institute for Health and Care Excellence (NICE), 2017, Cataracts in adults; management : 7: 7: 7: 7: 7: 53. Summary of recommendations. The total prevalence of blindness in Kenya is estimated at 0. Laser treatment. Morgangnian cataract Epidemiology Cataract is the leading cause of blindness in the world. 3%) Grade 2, 34 (11. Abstract. management of postoperative macular edema. Based on the causes, cataracts can be classified into age-related cataracts, pediatric cataracts, and cataracts due to other causes. When your eye is dilated, the pupils are wide open so the doctor can more clearly see the back of the eye. The normal ratio of the cup-to-nerve diameters is 0 to 0. - PMC. 32–22. as a Standard Assessment Tool in the Cataract Practice Kerry K Assil 1 and V Nicholas Batra2 1. [ 4] The incidence ranges from 1. Relevant peer-reviewed literature was identified, and 21 clinical research questions associated with the definition, classification,. management of patients undergoing cataract surgery. Cataracts, which are lenticular opacities that may occur at different lens locations, are the leading cause of visual impairment worldwide. 103 Optimal management of infantile cataracts involves long-term care 128. Cataract surgery can help reduce the intraocular pressure alone or. Flow charts are not presented for reviews undertaken by the Cochrane Eyes and Vision Group, but full details of the searches can be found in the published Cochrane reviews. It further aims to improve the availability of information for people with cataracts before, during and. 5–3. Cataracts are the most common cause of vision loss worldwide, but they are treatable. 11, 95% CI 0. Cataract Assessment and Management; Call Us. When your eye is dilated, the pupils are wide open so the doctor can more clearly see the back of the eye. 4%–15. Laser treatment. Advances in computing and AI technology have promoted the development of connected health systems, indirectly influencing approaches to cataract treatment. Diagnosis. 2. The main objectives of the guidance are:Management of cataract. This concise textbook provides information on the Orbscan topography unit and its usefulness in predicting and diagnosing ectasia, the Pentacam topography unit, the relation between and usefulness of both topography and wavefront aberrometry and the use of topography in cataract surgery. We developed an automatic detection tool for cataract on SS-OCT images. Recent findings . Patient information. Worldwide, 20,000–40,000 children with congenital or childhood cataract are born every year, and there are an estimated 200,000 children blind from bilateral cataract. jcrs. Preoperative assessment and biometry. Menu. Diagnosis is by ophthalmoscopy and slit-lamp examination. The cataract type must be identified prior to surgery. Optometrists must take a good patient history to deter-. It also is one of the safest and most effective types of surgery. Describe the reduced visual acuity in the physical exam findings of those with cataracts. 1. Key Points. The size of the nucleus and grade of the sclerosis must be assessed to decide on the incision and type of. This review evaluates the various management options available and aims to propose a clinical management. Cataract management is another field that can benefit from greater AI. Age-related cataracts are the most common type. Perioperative Management of Antithrombotic Therapy: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Causes. Emergency Care, Computer Vision Syndrome, Glaucoma, Cataract Assessment and Management, Dry and Pink Eye, Presbyopia, Pink Eyes, Retinal Detachment, Nearsighted (Myopia), Farsighted (Hyperopia) & Macular Degeneration PROCEDURES:. Your eye doctor will let you know how best to deal with. Cataract is one. 2 Genetic mutations account for the majority of cases of bilateral. Do not restrict access to cataract surgery on the basis of visual acuity. A cataract is a cloudy area in the lens of your eye (the clear part of the eye that helps to focus light). Cataracts usually develop in both eyes, but sometimes they only affect one. Larger keloids can be flattened by pulsed-dye laser sessions. CHEC. Retinal exam. If the cataract is Introduction. ISBN-13: 978-1-4731-2706-7 Copyright. 4%–15. 19 second-eye cataract surgery if there is a cataract in the non-operated 20 eye 21 arrangements for managing ocular comorbidities. Ishrat et al. [51] SLP. The HTR1F protein is a G-protein coupled serotonin receptor. 3. A cataract can. The main symptom is gradual, painless vision blurring. This guideline covers managing cataracts in adults aged 18 and over. Treatment is. Cataract services suffered severe disruption due to necessary measures taken to reduce elective surgery in order to release capacity to support intensive care requirements. Feeling should start to return to your eye within a few hours of surgery, but it may take a few days. Cataract Assessment & Management. Vision may become blurred or cloudy, colours may be seen differently, and people may experience problems with glare. At the clinic, you will have an assessment to see whether cataract surgery is appropriate for you. Treatment is with surgery involving an incision into the eye and removal. description of the type, severity, and location of the cataract. Approximately 440,000 NHS cataract procedures wereImportance Competence in cataract surgery is a public health necessity, and videos of cataract surgery are routinely available to educators and trainees but currently are of limited use in training. 61 3 Management 62 Indications and clinical thresholds for referral for surgical treatment. Cataracts can affect people of all ages, but they are particularly prevalent in elderly patients. Blink Eyewear showcases an array of fashionable frames for your Transitions® lenses at all three locations in Crowfoot in NW Calgary, West Springs in SW Calgary, and Creekside in NW Calgary. This guideline covers managing cataracts in adults aged 18 and over. It is likely that routine preoperative medical testing will detect medical conditions, but it is questionable whether these conditions should preclude individuals from cataract surgery or change their perioperative management. The refractive power of the human eye is dependent on three factors, the. Faced with a potential 50% increase in cataract surgery workload per week in the post. The Optical Quality Analysis System (OQAS, Visiometrics) provides objective measurements of image formed onto retina, by combining quantification of ocular media transparency and of optical aberrations. In a prospective study of 100 patients, Dasgupta and Gupta 12 found. This study was conducted to evaluate changes in patient-reported VR-QoL and visual function in an NHS hospital. If you suspect you have cataracts, have an assessment with your optometrist as soon as possible. Retained lens fragments (RLF) can result in a severe inflammatory reaction leading to significant vision threatening complications, including cystoid macular edema (CME), glaucoma, uveitis, and corneal edema. Keywords: cataracts, causes of cataract, pathophysiology of cataract, management of cataract. affecting the patients quality of life and that treatment would be of benet. 1 Base the decision to refer a person with a cataract for surgery on a 24 discussion with them (and their family members or carers, as appropriate)Cataracts are the leading cause of visual impairment and blindness globally. A cataract is a clouding of the eye's natural lens, which lies behind the iris and the pupil. Cataract clinic Before your surgery, we will ask you to come to a cataract clinic. If cataracts occur bilaterally, the more advanced cataract is removed first. [] The. Cataract is the leading cause of blindness worldwide, and the only effective treatment to restore vision is surgery. The median grade was 2 and the mode was also 2. Shop Now. Most of these unmet needs derive from the inherent challenges of cataract surgery. DAYS. 5% were willing to recommend it to friends and family. Bannock St. Information should be tailored to the person's needs, for example, in an accessible format. Cataract Assessment and Management admin 2021-05-08T01:46:10+00:00. Referral Management centres or directly. 1. Initial consultation (2-4 weeks before surgery) £95. A cataract is a congenital or degenerative opacity of the lens. 71 A visually significant cataract may be defined as a 3 mm or larger central opacity. The Panel recommends that ophthalmologists incorporate the PH test as part of the preoperative assessment for all cataract patients, and consider it an indicator of successful postcataract surgery visual outcomes. It further aims to improve the availability of information for people with cataracts before, during and after. The mean (±SD) score of the overall participant’s attitude was 3. All selected articles were analyzed to assess the level of evidence according. 8% of total allowed charges. Cataracts are the leading cause of vision loss among people over age 55. Congenital cataracts are present from birth. Advanced age is the major risk factor for developing cataracts because the lens loses water and lens fibers become more compact. Cataracts are very common as you get older. Topic. Sensitivity to light and glare. Your ophthalmologist will examine your cornea, iris, lens and the other areas at the front of the eye. Book an Appointment: 1-403-516-2292. This test compares your sight to standard 20/20 vision. 1, 2, 4–6 Using such evidence, guidance produced by the National Institute for Health and. Transition lenses combine the benefits of corrective glasses and prescription sunglasses. It accounts for 7. found a 7% incidence of cataract developing within 9–50 months after organ or bone marrow transplantation in children. Hypermature cataract 5. The rates of perioperative morbidity and mortality associated with cataract surgery are low. Age-related cataract is the most common type of cataract that injuries the visual function and quality of life for the elderly [1, 2]. Mature cataract: This is a cataract that is opaque, totally obscuring the red reflex. Such a phenomenon, which some call “lens within a lens phenomenon,” may lead to monocular diplopia that is not correctable with spectacles, prisms, or contact lenses. Who the guideline. definition of a cataract is an opacification of the lens that leads to measurably decreased visual acuity and/or some functional disability as perceived by the patient. Methods. 99). • It is estimated that 243,139 Australians are currently living with visually significant cataract (visual acuity worse than 6/12), including 10,616 Aboriginal and Torres Strait Islander people and 232,523 non-Indigenous Australians. Proper. Objective: The demand for cataract surgery in Fife (a well-defined region in southeast Scotland) was steadily increasing over 15 years. Hard cataracts make preoperative assessment of intraocular structures difficult, and operating on them is an even greater challenge. All information items necessary for cataract assessment and treatment are included. In fact, more than half of all Americans age 80 or older either have cataracts or have had surgery to get rid of cataracts. B. For some people,. Since glaucoma occurs in 10% of congenital cataract surgery, many surgeons delay the. The first symptoms include blurry vision (like looking through frosted glass), double vision, shadowing of images, increased glare and colours. Cataracts are a clouding of the lens of your eye, resulting in changes to your vision. Open globe injury (OGI) is defined as a full-thickness wound of the eyewall, due to either a laceration or an occult rupture. We used a modified Delphi technique to obtain consensus on the management of astigmatism during cataract surgery. Douketis JD, Spyropoulos AC, Spencer FA, et al. PMC1055403. Most cataracts can be diagnosed with an eye exam. It also may reduce your vision in bright light and cause glare. DAY 1. GRADE was used to assess the quality of evidence for the selected outcomes as specified in ‘The guidelines manual (2014)’. 7%, however cataract contributes almost half (43%) of the total blindness in Kenya. It aims to improve care before, during and after cataract surgery by optimising service organisation, referral and surgical management, and reducing complications. Read about what causes presbyopia and how to manage it. 988-9322Studies were included if they were longitudinal with ≥100 participants, diabetes was defined, a description of cataract assessment was provided, data were from humans, and the reports were in English. 3% of pediatric blindness and a significant avertable disability-adjusted life years. Objective assessment of nuclear cataract: comparison of double-pass and Scheimpflug systems. All of our stores are inventoried with the most sought-after designer and commercial frames and eyewear for all occasions and purposes. 1. An estimated of 25 million people were blind due to cataract i. Wade Crowfoot serves as California’s Natural Resources Secretary, leading efforts to conserve California’s environment and natural resources. The Department of Health in England has asked NICE ‘to develop a clinical guideline on Cataracts: diagnosis and management of cataracts’ and. Cataract extraction is the most prevalent surgical procedure of all medical specialties with an estimated 3. Cataracts form when protein builds up in the lens of your eye and makes it cloudy. Results. Cataracts can develop due to normal aging. The purpose of this assessment by the Ophthalmic Technology Assessment Committee Refractive Management/Intervention Panel is to review the published literature on the refractive outcomes, safety profile, and cost-effectiveness of femtosecond laser-assisted cataract surgery (FLACS) compared with conventional. pdf), Text File (. For more guidance on giving information to people and discussing. Thus, assessment of patient satisfaction can also be used to evaluate a specific. These include difficulty with night vision, haloes around lights, sensitivity to glare, fading of colours, and double vision on one side. 1,2 Nevertheless, because patients with cataracts tend to be elderly and to have serious coexisting. Next: Physical. It aims to improve care before, during and after cataract surgery by optimising service organisation, referral. Crowfoot Vision Centre is a family eye health clinic and full optical dispensary. 1. The Way Forward project commissioned by the Royal College of Ophthalmologists (RCOphth) in 2015 21 set about collating best practice guidelines to support the increasing demand for cataract surgery and reported on the global estimations that a 52% rise in cataract cases is to be expected between 2015 and 2035. Which change would the nurse emphasize as possibly indicating beginning cataract formation? a. Cataract is one of the leading causes of visual impairment worldwide. Guidance. Client wears reading glasses Client has hypotension Negative family history Client is African American Client has Type II diabetes, Which clinical manifestations are associated with the. “Report immediate loss of vision of pain in the affected eye. Results: There was a statistically significant difference between the types of cataract and individual risk factors ( p < 0. 1 It is also very safe, with less than a 1% risk of major adverse. toggle navigation. 2 . They also will perform an eye exam. then generated a detailed cataract assessment and scoring criteria for zebra sh models based on more than 700 lens images obtained from our experiments ( Fig. Each book is a rapid revision aid for. summarize the development of cataract and highlight how different the impact and the management of this disease are in. 64 Specific aspects that will be considered are routine preoperative 65 assessment, biometry and risk stratification techniques. Another metric that has been used to evaluate the success of astigmatism correction is independence from spectacles after cataract surgery, as the use of spectacles is correlated with a higher financial. Wade Crowfoot serves as California’s Natural Resources Secretary, leading efforts to conserve California’s environment and natural resources. The risk factors of age,. Cataract is the leading cause of. toggle navigation. If the cataract isIntroduction. 6). Universal artificial intelligence platform for collaborative management of cataracts. Pre-operative medical ancillary testing prior to cataract surgery is recommended only if indicated by the patient’s medical condition and the physician’s assessment. 9%) had fear to the. For more guidance on giving information to people and discussing their preferences, see the NICE guideline. What are the risks of cataract surgery? As with any surgery, cataract surgery poses risks, suchAims To investigate the risk factors for cataract following eye-preserving therapies for retinoblastoma. The Assistant Director of Education, J. Your cataractsKey Points. Cataracts continue to be an important cause of blindness. • what cataract surgery involves, including possible risks and benefits • how the person's quality of life may be affected if they choose not to have cataract surgery • whether the person wants to have cataract surgery. A cataract is a congenital or degenerative opacity of the lens. The aetiology of cataract in farmed fish species is considered to be production related; caused by both.